From 4171925aa9f3f7bf57b100238f148b50c45c3b1b Mon Sep 17 00:00:00 2001 From: Ian Rogers Date: Tue, 29 Nov 2022 22:29:35 -0800 Subject: tools lib traceevent: Remove libtraceevent libtraceevent is now out-of-date and it is better to depend on the system version. Remove this code that is no longer depended upon by any builds. Committer notes: Removed the removed tools/lib/traceevent/ from tools/perf/MANIFEST, so that 'make perf-tar-src-pkg' works. Signed-off-by: Ian Rogers Acked-by: Steven Rostedt (VMware) Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20221130062935.2219247-5-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/traceevent/.gitignore | 4 - tools/lib/traceevent/Build | 8 - tools/lib/traceevent/Documentation/Makefile | 207 - tools/lib/traceevent/Documentation/asciidoc.conf | 120 - .../Documentation/libtraceevent-commands.txt | 153 - .../Documentation/libtraceevent-cpus.txt | 77 - .../Documentation/libtraceevent-endian_read.txt | 78 - .../Documentation/libtraceevent-event_find.txt | 103 - .../Documentation/libtraceevent-event_get.txt | 99 - .../Documentation/libtraceevent-event_list.txt | 122 - .../Documentation/libtraceevent-event_print.txt | 130 - .../Documentation/libtraceevent-field_find.txt | 118 - .../Documentation/libtraceevent-field_get_val.txt | 122 - .../Documentation/libtraceevent-field_print.txt | 126 - .../Documentation/libtraceevent-field_read.txt | 81 - .../Documentation/libtraceevent-fields.txt | 105 - .../Documentation/libtraceevent-file_endian.txt | 91 - .../Documentation/libtraceevent-filter.txt | 209 - .../Documentation/libtraceevent-func_apis.txt | 183 - .../Documentation/libtraceevent-func_find.txt | 88 - .../Documentation/libtraceevent-handle.txt | 101 - .../Documentation/libtraceevent-header_page.txt | 102 - .../Documentation/libtraceevent-host_endian.txt | 104 - .../Documentation/libtraceevent-long_size.txt | 78 - .../Documentation/libtraceevent-page_size.txt | 82 - .../Documentation/libtraceevent-parse_event.txt | 90 - .../Documentation/libtraceevent-parse_head.txt | 82 - .../Documentation/libtraceevent-plugins.txt | 122 - .../Documentation/libtraceevent-record_parse.txt | 137 - .../libtraceevent-reg_event_handler.txt | 156 - .../Documentation/libtraceevent-reg_print_func.txt | 155 - .../Documentation/libtraceevent-set_flag.txt | 104 - .../Documentation/libtraceevent-strerror.txt | 85 - .../Documentation/libtraceevent-tseq.txt | 158 - .../lib/traceevent/Documentation/libtraceevent.txt | 192 - .../lib/traceevent/Documentation/manpage-1.72.xsl | 14 - .../lib/traceevent/Documentation/manpage-base.xsl | 35 - .../Documentation/manpage-bold-literal.xsl | 17 - .../traceevent/Documentation/manpage-normal.xsl | 13 - .../Documentation/manpage-suppress-sp.xsl | 21 - tools/lib/traceevent/Makefile | 300 - tools/lib/traceevent/event-parse-api.c | 333 - tools/lib/traceevent/event-parse-local.h | 123 - tools/lib/traceevent/event-parse.c | 7624 -------------------- tools/lib/traceevent/event-parse.h | 750 -- tools/lib/traceevent/event-plugin.c | 711 -- tools/lib/traceevent/event-utils.h | 67 - tools/lib/traceevent/kbuffer-parse.c | 809 --- tools/lib/traceevent/kbuffer.h | 68 - tools/lib/traceevent/libtraceevent.pc.template | 10 - tools/lib/traceevent/parse-filter.c | 2281 ------ tools/lib/traceevent/parse-utils.c | 71 - tools/lib/traceevent/plugins/Build | 12 - tools/lib/traceevent/plugins/Makefile | 225 - tools/lib/traceevent/plugins/plugin_cfg80211.c | 43 - tools/lib/traceevent/plugins/plugin_function.c | 282 - tools/lib/traceevent/plugins/plugin_futex.c | 123 - tools/lib/traceevent/plugins/plugin_hrtimer.c | 74 - tools/lib/traceevent/plugins/plugin_jbd2.c | 61 - tools/lib/traceevent/plugins/plugin_kmem.c | 80 - tools/lib/traceevent/plugins/plugin_kvm.c | 527 -- tools/lib/traceevent/plugins/plugin_mac80211.c | 88 - tools/lib/traceevent/plugins/plugin_sched_switch.c | 146 - tools/lib/traceevent/plugins/plugin_scsi.c | 434 -- tools/lib/traceevent/plugins/plugin_tlb.c | 66 - tools/lib/traceevent/plugins/plugin_xen.c | 138 - tools/lib/traceevent/tep_strerror.c | 53 - tools/lib/traceevent/trace-seq.c | 249 - tools/lib/traceevent/trace-seq.h | 55 - tools/perf/MANIFEST | 1 - 70 files changed, 19876 deletions(-) delete mode 100644 tools/lib/traceevent/.gitignore delete mode 100644 tools/lib/traceevent/Build delete mode 100644 tools/lib/traceevent/Documentation/Makefile delete mode 100644 tools/lib/traceevent/Documentation/asciidoc.conf delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-commands.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-cpus.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-endian_read.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-event_find.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-event_get.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-event_list.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-event_print.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-field_find.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-field_get_val.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-field_print.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-field_read.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-fields.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-file_endian.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-filter.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-func_find.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-handle.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-header_page.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-host_endian.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-long_size.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-page_size.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-parse_event.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-parse_head.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-plugins.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-record_parse.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-reg_event_handler.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-reg_print_func.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-set_flag.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-strerror.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent-tseq.txt delete mode 100644 tools/lib/traceevent/Documentation/libtraceevent.txt delete mode 100644 tools/lib/traceevent/Documentation/manpage-1.72.xsl delete mode 100644 tools/lib/traceevent/Documentation/manpage-base.xsl delete mode 100644 tools/lib/traceevent/Documentation/manpage-bold-literal.xsl delete mode 100644 tools/lib/traceevent/Documentation/manpage-normal.xsl delete mode 100644 tools/lib/traceevent/Documentation/manpage-suppress-sp.xsl delete mode 100644 tools/lib/traceevent/Makefile delete mode 100644 tools/lib/traceevent/event-parse-api.c delete mode 100644 tools/lib/traceevent/event-parse-local.h delete mode 100644 tools/lib/traceevent/event-parse.c delete mode 100644 tools/lib/traceevent/event-parse.h delete mode 100644 tools/lib/traceevent/event-plugin.c delete mode 100644 tools/lib/traceevent/event-utils.h delete mode 100644 tools/lib/traceevent/kbuffer-parse.c delete mode 100644 tools/lib/traceevent/kbuffer.h delete mode 100644 tools/lib/traceevent/libtraceevent.pc.template delete mode 100644 tools/lib/traceevent/parse-filter.c delete mode 100644 tools/lib/traceevent/parse-utils.c delete mode 100644 tools/lib/traceevent/plugins/Build delete mode 100644 tools/lib/traceevent/plugins/Makefile delete mode 100644 tools/lib/traceevent/plugins/plugin_cfg80211.c delete mode 100644 tools/lib/traceevent/plugins/plugin_function.c delete mode 100644 tools/lib/traceevent/plugins/plugin_futex.c delete mode 100644 tools/lib/traceevent/plugins/plugin_hrtimer.c delete mode 100644 tools/lib/traceevent/plugins/plugin_jbd2.c delete mode 100644 tools/lib/traceevent/plugins/plugin_kmem.c delete mode 100644 tools/lib/traceevent/plugins/plugin_kvm.c delete mode 100644 tools/lib/traceevent/plugins/plugin_mac80211.c delete mode 100644 tools/lib/traceevent/plugins/plugin_sched_switch.c delete mode 100644 tools/lib/traceevent/plugins/plugin_scsi.c delete mode 100644 tools/lib/traceevent/plugins/plugin_tlb.c delete mode 100644 tools/lib/traceevent/plugins/plugin_xen.c delete mode 100644 tools/lib/traceevent/tep_strerror.c delete mode 100644 tools/lib/traceevent/trace-seq.c delete mode 100644 tools/lib/traceevent/trace-seq.h diff --git a/tools/lib/traceevent/.gitignore b/tools/lib/traceevent/.gitignore deleted file mode 100644 index 7123c70b9ebc..000000000000 --- a/tools/lib/traceevent/.gitignore +++ /dev/null @@ -1,4 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0-only -TRACEEVENT-CFLAGS -libtraceevent-dynamic-list -libtraceevent.so.* diff --git a/tools/lib/traceevent/Build b/tools/lib/traceevent/Build deleted file mode 100644 index f9a5d79578f5..000000000000 --- a/tools/lib/traceevent/Build +++ /dev/null @@ -1,8 +0,0 @@ -libtraceevent-y += event-parse.o -libtraceevent-y += event-plugin.o -libtraceevent-y += trace-seq.o -libtraceevent-y += parse-filter.o -libtraceevent-y += parse-utils.o -libtraceevent-y += kbuffer-parse.o -libtraceevent-y += tep_strerror.o -libtraceevent-y += event-parse-api.o diff --git a/tools/lib/traceevent/Documentation/Makefile b/tools/lib/traceevent/Documentation/Makefile deleted file mode 100644 index aa72ab96c3c1..000000000000 --- a/tools/lib/traceevent/Documentation/Makefile +++ /dev/null @@ -1,207 +0,0 @@ -include ../../../scripts/Makefile.include -include ../../../scripts/utilities.mak - -# This Makefile and manpage XSL files were taken from tools/perf/Documentation -# and modified for libtraceevent. - -MAN3_TXT= \ - $(wildcard libtraceevent-*.txt) \ - libtraceevent.txt - -MAN_TXT = $(MAN3_TXT) -_MAN_XML=$(patsubst %.txt,%.xml,$(MAN_TXT)) -_MAN_HTML=$(patsubst %.txt,%.html,$(MAN_TXT)) -_DOC_MAN3=$(patsubst %.txt,%.3,$(MAN3_TXT)) - -MAN_XML=$(addprefix $(OUTPUT),$(_MAN_XML)) -MAN_HTML=$(addprefix $(OUTPUT),$(_MAN_HTML)) -DOC_MAN3=$(addprefix $(OUTPUT),$(_DOC_MAN3)) - -# Make the path relative to DESTDIR, not prefix -ifndef DESTDIR -prefix?=$(HOME) -endif -bindir?=$(prefix)/bin -htmldir?=$(prefix)/share/doc/libtraceevent-doc -pdfdir?=$(prefix)/share/doc/libtraceevent-doc -mandir?=$(prefix)/share/man -man3dir=$(mandir)/man3 - -ASCIIDOC=asciidoc -ASCIIDOC_EXTRA = --unsafe -f asciidoc.conf -ASCIIDOC_HTML = xhtml11 -MANPAGE_XSL = manpage-normal.xsl -XMLTO_EXTRA = -INSTALL?=install -RM ?= rm -f - -ifdef USE_ASCIIDOCTOR -ASCIIDOC = asciidoctor -ASCIIDOC_EXTRA = -a compat-mode -ASCIIDOC_EXTRA += -I. -rasciidoctor-extensions -ASCIIDOC_EXTRA += -a mansource="libtraceevent" -a manmanual="libtraceevent Manual" -ASCIIDOC_HTML = xhtml5 -endif - -XMLTO=xmlto - -_tmp_tool_path := $(call get-executable,$(ASCIIDOC)) -ifeq ($(_tmp_tool_path),) - missing_tools = $(ASCIIDOC) -endif - -ifndef USE_ASCIIDOCTOR -_tmp_tool_path := $(call get-executable,$(XMLTO)) -ifeq ($(_tmp_tool_path),) - missing_tools += $(XMLTO) -endif -endif - -# -# For asciidoc ... -# -7.1.2, no extra settings are needed. -# 8.0-, set ASCIIDOC8. -# - -# -# For docbook-xsl ... -# -1.68.1, set ASCIIDOC_NO_ROFF? (based on changelog from 1.73.0) -# 1.69.0, no extra settings are needed? -# 1.69.1-1.71.0, set DOCBOOK_SUPPRESS_SP? -# 1.71.1, no extra settings are needed? -# 1.72.0, set DOCBOOK_XSL_172. -# 1.73.0-, set ASCIIDOC_NO_ROFF -# - -# -# If you had been using DOCBOOK_XSL_172 in an attempt to get rid -# of 'the ".ft C" problem' in your generated manpages, and you -# instead ended up with weird characters around callouts, try -# using ASCIIDOC_NO_ROFF instead (it works fine with ASCIIDOC8). -# - -ifdef ASCIIDOC8 -ASCIIDOC_EXTRA += -a asciidoc7compatible -endif -ifdef DOCBOOK_XSL_172 -ASCIIDOC_EXTRA += -a libtraceevent-asciidoc-no-roff -MANPAGE_XSL = manpage-1.72.xsl -else - ifdef ASCIIDOC_NO_ROFF - # docbook-xsl after 1.72 needs the regular XSL, but will not - # pass-thru raw roff codes from asciidoc.conf, so turn them off. - ASCIIDOC_EXTRA += -a libtraceevent-asciidoc-no-roff - endif -endif -ifdef MAN_BOLD_LITERAL -XMLTO_EXTRA += -m manpage-bold-literal.xsl -endif -ifdef DOCBOOK_SUPPRESS_SP -XMLTO_EXTRA += -m manpage-suppress-sp.xsl -endif - -SHELL_PATH ?= $(SHELL) -# Shell quote; -SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH)) - -DESTDIR ?= -DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' - -export DESTDIR DESTDIR_SQ - -# -# Please note that there is a minor bug in asciidoc. -# The version after 6.0.3 _will_ include the patch found here: -# http://marc.theaimsgroup.com/?l=libtraceevent&m=111558757202243&w=2 -# -# Until that version is released you may have to apply the patch -# yourself - yes, all 6 characters of it! -# -QUIET_SUBDIR0 = +$(MAKE) -C # space to separate -C and subdir -QUIET_SUBDIR1 = - -ifneq ($(findstring $(MAKEFLAGS),w),w) -PRINT_DIR = --no-print-directory -else # "make -w" -NO_SUBDIR = : -endif - -ifneq ($(findstring $(MAKEFLAGS),s),s) -ifneq ($(V),1) - QUIET_ASCIIDOC = @echo ' ASCIIDOC '$@; - QUIET_XMLTO = @echo ' XMLTO '$@; - QUIET_SUBDIR0 = +@subdir= - QUIET_SUBDIR1 = ;$(NO_SUBDIR) \ - echo ' SUBDIR ' $$subdir; \ - $(MAKE) $(PRINT_DIR) -C $$subdir - export V -endif -endif - -all: html man - -man: man3 -man3: $(DOC_MAN3) - -html: $(MAN_HTML) - -$(MAN_HTML) $(DOC_MAN3): asciidoc.conf - -install: install-man - -check-man-tools: -ifdef missing_tools - $(error "You need to install $(missing_tools) for man pages") -endif - -do-install-man: man - $(call QUIET_INSTALL, Documentation-man) \ - $(INSTALL) -d -m 755 $(DESTDIR)$(man3dir); \ - $(INSTALL) -m 644 $(DOC_MAN3) $(DESTDIR)$(man3dir); - -install-man: check-man-tools man do-install-man - -uninstall: uninstall-man - -uninstall-man: - $(call QUIET_UNINST, Documentation-man) \ - $(Q)$(RM) $(addprefix $(DESTDIR)$(man3dir)/,$(DOC_MAN3)) - - -ifdef missing_tools - DO_INSTALL_MAN = $(warning Please install $(missing_tools) to have the man pages installed) -else - DO_INSTALL_MAN = do-install-man -endif - -CLEAN_FILES = \ - $(MAN_XML) $(addsuffix +,$(MAN_XML)) \ - $(MAN_HTML) $(addsuffix +,$(MAN_HTML)) \ - $(DOC_MAN3) *.3 - -clean: - $(call QUIET_CLEAN, Documentation) $(RM) $(CLEAN_FILES) - -ifdef USE_ASCIIDOCTOR -$(OUTPUT)%.3 : $(OUTPUT)%.txt - $(QUIET_ASCIIDOC)$(RM) $@+ $@ && \ - $(ASCIIDOC) -b manpage -d manpage \ - $(ASCIIDOC_EXTRA) -alibtraceevent_version=$(EVENT_PARSE_VERSION) -o $@+ $< && \ - mv $@+ $@ -endif - -$(OUTPUT)%.3 : $(OUTPUT)%.xml - $(QUIET_XMLTO)$(RM) $@ && \ - $(XMLTO) -o $(OUTPUT). -m $(MANPAGE_XSL) $(XMLTO_EXTRA) man $< - -$(OUTPUT)%.xml : %.txt - $(QUIET_ASCIIDOC)$(RM) $@+ $@ && \ - $(ASCIIDOC) -b docbook -d manpage \ - $(ASCIIDOC_EXTRA) -alibtraceevent_version=$(EVENT_PARSE_VERSION) -o $@+ $< && \ - mv $@+ $@ - -$(MAN_HTML): $(OUTPUT)%.html : %.txt - $(QUIET_ASCIIDOC)$(RM) $@+ $@ && \ - $(ASCIIDOC) -b $(ASCIIDOC_HTML) -d manpage \ - $(ASCIIDOC_EXTRA) -aperf_version=$(EVENT_PARSE_VERSION) -o $@+ $< && \ - mv $@+ $@ diff --git a/tools/lib/traceevent/Documentation/asciidoc.conf b/tools/lib/traceevent/Documentation/asciidoc.conf deleted file mode 100644 index 07595717f06e..000000000000 --- a/tools/lib/traceevent/Documentation/asciidoc.conf +++ /dev/null @@ -1,120 +0,0 @@ -## linktep: macro -# -# Usage: linktep:command[manpage-section] -# -# Note, {0} is the manpage section, while {target} is the command. -# -# Show TEP link as: (
); if section is defined, else just show -# the command. - -[macros] -(?su)[\\]?(?Plinktep):(?P\S*?)\[(?P.*?)\]= - -[attributes] -asterisk=* -plus=+ -caret=^ -startsb=[ -endsb=] -tilde=~ - -ifdef::backend-docbook[] -[linktep-inlinemacro] -{0%{target}} -{0#} -{0#{target}{0}} -{0#} -endif::backend-docbook[] - -ifdef::backend-docbook[] -ifndef::tep-asciidoc-no-roff[] -# "unbreak" docbook-xsl v1.68 for manpages. v1.69 works with or without this. -# v1.72 breaks with this because it replaces dots not in roff requests. -[listingblock] -{title} - -ifdef::doctype-manpage[] - .ft C -endif::doctype-manpage[] -| -ifdef::doctype-manpage[] - .ft -endif::doctype-manpage[] - -{title#} -endif::tep-asciidoc-no-roff[] - -ifdef::tep-asciidoc-no-roff[] -ifdef::doctype-manpage[] -# The following two small workarounds insert a simple paragraph after screen -[listingblock] -{title} - -| - -{title#} - -[verseblock] -{title} -{title%} -{title#} -| - -{title#} -{title%} -endif::doctype-manpage[] -endif::tep-asciidoc-no-roff[] -endif::backend-docbook[] - -ifdef::doctype-manpage[] -ifdef::backend-docbook[] -[header] -template::[header-declarations] - - -{mantitle} -{manvolnum} -libtraceevent -{libtraceevent_version} -libtraceevent Manual - - - {manname1} - {manname2} - {manname3} - {manname4} - {manname5} - {manname6} - {manname7} - {manname8} - {manname9} - {manname10} - {manname11} - {manname12} - {manname13} - {manname14} - {manname15} - {manname16} - {manname17} - {manname18} - {manname19} - {manname20} - {manname21} - {manname22} - {manname23} - {manname24} - {manname25} - {manname26} - {manname27} - {manname28} - {manname29} - {manname30} - {manpurpose} - -endif::backend-docbook[] -endif::doctype-manpage[] - -ifdef::backend-xhtml11[] -[linktep-inlinemacro] -{target}{0?({0})} -endif::backend-xhtml11[] diff --git a/tools/lib/traceevent/Documentation/libtraceevent-commands.txt b/tools/lib/traceevent/Documentation/libtraceevent-commands.txt deleted file mode 100644 index bec552001f8e..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-commands.txt +++ /dev/null @@ -1,153 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_register_comm, tep_override_comm, tep_pid_is_registered, -tep_data_comm_from_pid, tep_data_pid_from_comm, tep_cmdline_pid - -Manage pid to process name mappings. - -SYNOPSIS --------- -[verse] --- -*#include * - -int *tep_register_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_); -int *tep_override_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_); -bool *tep_is_pid_registered*(struct tep_handle pass:[*]_tep_, int _pid_); -const char pass:[*]*tep_data_comm_from_pid*(struct tep_handle pass:[*]_pevent_, int _pid_); -struct cmdline pass:[*]*tep_data_pid_from_comm*(struct tep_handle pass:[*]_pevent_, const char pass:[*]_comm_, struct cmdline pass:[*]_next_); -int *tep_cmdline_pid*(struct tep_handle pass:[*]_pevent_, struct cmdline pass:[*]_cmdline_); --- - -DESCRIPTION ------------ -These functions can be used to handle the mapping between pid and process name. -The library builds a cache of these mappings, which is used to display the name -of the process, instead of its pid. This information can be retrieved from -tracefs/saved_cmdlines file. - -The _tep_register_comm()_ function registers a _pid_ / process name mapping. -If a command with the same _pid_ is already registered, an error is returned. -The _pid_ argument is the process ID, the _comm_ argument is the process name, -_tep_ is the event context. The _comm_ is duplicated internally. - -The _tep_override_comm()_ function registers a _pid_ / process name mapping. -If a process with the same pid is already registered, the process name string is -udapted with the new one. The _pid_ argument is the process ID, the _comm_ -argument is the process name, _tep_ is the event context. The _comm_ is -duplicated internally. - -The _tep_is_pid_registered()_ function checks if a pid has a process name -mapping registered. The _pid_ argument is the process ID, _tep_ is the event -context. - -The _tep_data_comm_from_pid()_ function returns the process name for a given -pid. The _pid_ argument is the process ID, _tep_ is the event context. -The returned string should not be freed, but will be freed when the _tep_ -handler is closed. - -The _tep_data_pid_from_comm()_ function returns a pid for a given process name. -The _comm_ argument is the process name, _tep_ is the event context. -The argument _next_ is the cmdline structure to search for the next pid. -As there may be more than one pid for a given process, the result of this call -can be passed back into a recurring call in the _next_ parameter, to search for -the next pid. If _next_ is NULL, it will return the first pid associated with -the _comm_. The function performs a linear search, so it may be slow. - -The _tep_cmdline_pid()_ function returns the pid associated with a given -_cmdline_. The _tep_ argument is the event context. - -RETURN VALUE ------------- -_tep_register_comm()_ function returns 0 on success. In case of an error -1 is -returned and errno is set to indicate the cause of the problem: ENOMEM, if there -is not enough memory to duplicate the _comm_ or EEXIST if a mapping for this -_pid_ is already registered. - -_tep_override_comm()_ function returns 0 on success. In case of an error -1 is -returned and errno is set to indicate the cause of the problem: ENOMEM, if there -is not enough memory to duplicate the _comm_. - -_tep_is_pid_registered()_ function returns true if the _pid_ has a process name -mapped to it, false otherwise. - -_tep_data_comm_from_pid()_ function returns the process name as string, or the -string "<...>" if there is no mapping for the given pid. - -_tep_data_pid_from_comm()_ function returns a pointer to a struct cmdline, that -holds a pid for a given process, or NULL if none is found. This result can be -passed back into a recurring call as the _next_ parameter of the function. - -_tep_cmdline_pid()_ functions returns the pid for the give cmdline. If _cmdline_ - is NULL, then -1 is returned. - -EXAMPLE -------- -The following example registers pid for command "ls", in context of event _tep_ -and performs various searches for pid / process name mappings: -[source,c] --- -#include -... -int ret; -int ls_pid = 1021; -struct tep_handle *tep = tep_alloc(); -... - ret = tep_register_comm(tep, "ls", ls_pid); - if (ret != 0 && errno == EEXIST) - ret = tep_override_comm(tep, "ls", ls_pid); - if (ret != 0) { - /* Failed to register pid / command mapping */ - } -... - if (tep_is_pid_registered(tep, ls_pid) == 0) { - /* Command mapping for ls_pid is not registered */ - } -... - const char *comm = tep_data_comm_from_pid(tep, ls_pid); - if (comm) { - /* Found process name for ls_pid */ - } -... - int pid; - struct cmdline *cmd = tep_data_pid_from_comm(tep, "ls", NULL); - while (cmd) { - pid = tep_cmdline_pid(tep, cmd); - /* Found pid for process "ls" */ - cmd = tep_data_pid_from_comm(tep, "ls", cmd); - } --- -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-cpus.txt b/tools/lib/traceevent/Documentation/libtraceevent-cpus.txt deleted file mode 100644 index 5ad70e43b752..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-cpus.txt +++ /dev/null @@ -1,77 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_get_cpus, tep_set_cpus - Get / set the number of CPUs, which have a tracing -buffer representing it. Note, the buffer may be empty. - -SYNOPSIS --------- -[verse] --- -*#include * - -int *tep_get_cpus*(struct tep_handle pass:[*]_tep_); -void *tep_set_cpus*(struct tep_handle pass:[*]_tep_, int _cpus_); --- - -DESCRIPTION ------------ -The _tep_get_cpus()_ function gets the number of CPUs, which have a tracing -buffer representing it. The _tep_ argument is trace event parser context. - -The _tep_set_cpus()_ function sets the number of CPUs, which have a tracing -buffer representing it. The _tep_ argument is trace event parser context. -The _cpu_ argument is the number of CPUs with tracing data. - -RETURN VALUE ------------- -The _tep_get_cpus()_ functions returns the number of CPUs, which have tracing -data recorded. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... - tep_set_cpus(tep, 5); -... - printf("We have tracing data for %d CPUs", tep_get_cpus(tep)); --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-endian_read.txt b/tools/lib/traceevent/Documentation/libtraceevent-endian_read.txt deleted file mode 100644 index e64851b6e189..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-endian_read.txt +++ /dev/null @@ -1,78 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_read_number - Reads a number from raw data. - -SYNOPSIS --------- -[verse] --- -*#include * - -unsigned long long *tep_read_number*(struct tep_handle pass:[*]_tep_, const void pass:[*]_ptr_, int _size_); --- - -DESCRIPTION ------------ -The _tep_read_number()_ function reads an integer from raw data, taking into -account the endianness of the raw data and the current host. The _tep_ argument -is the trace event parser context. The _ptr_ is a pointer to the raw data, where -the integer is, and the _size_ is the size of the integer. - -RETURN VALUE ------------- -The _tep_read_number()_ function returns the integer in the byte order of -the current host. In case of an error, 0 is returned. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -void process_record(struct tep_record *record) -{ - int offset = 24; - int data = tep_read_number(tep, record->data + offset, 4); - - /* Read the 4 bytes at the offset 24 of data as an integer */ -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-event_find.txt b/tools/lib/traceevent/Documentation/libtraceevent-event_find.txt deleted file mode 100644 index 7bc062c9f76f..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-event_find.txt +++ /dev/null @@ -1,103 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_find_event,tep_find_event_by_name,tep_find_event_by_record - -Find events by given key. - -SYNOPSIS --------- -[verse] --- -*#include * - -struct tep_event pass:[*]*tep_find_event*(struct tep_handle pass:[*]_tep_, int _id_); -struct tep_event pass:[*]*tep_find_event_by_name*(struct tep_handle pass:[*]_tep_, const char pass:[*]_sys_, const char pass:[*]_name_); -struct tep_event pass:[*]*tep_find_event_by_record*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_record_); --- - -DESCRIPTION ------------ -This set of functions can be used to search for an event, based on a given -criteria. All functions require a pointer to a _tep_, trace event parser -context. - -The _tep_find_event()_ function searches for an event by given event _id_. The -event ID is assigned dynamically and can be viewed in event's format file, -"ID" field. - -The tep_find_event_by_name()_ function searches for an event by given -event _name_, under the system _sys_. If the _sys_ is NULL (not specified), -the first event with _name_ is returned. - -The tep_find_event_by_record()_ function searches for an event from a given -_record_. - -RETURN VALUE ------------- -All these functions return a pointer to the found event, or NULL if there is no -such event. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -struct tep_event *event; - -event = tep_find_event(tep, 1857); -if (event == NULL) { - /* There is no event with ID 1857 */ -} - -event = tep_find_event_by_name(tep, "kvm", "kvm_exit"); -if (event == NULL) { - /* There is no kvm_exit event, from kvm system */ -} - -void event_from_record(struct tep_record *record) -{ - struct tep_event *event = tep_find_event_by_record(tep, record); - if (event == NULL) { - /* There is no event from given record */ - } -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-event_get.txt b/tools/lib/traceevent/Documentation/libtraceevent-event_get.txt deleted file mode 100644 index 6525092fc417..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-event_get.txt +++ /dev/null @@ -1,99 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_get_event, tep_get_first_event, tep_get_events_count - Access events. - -SYNOPSIS --------- -[verse] --- -*#include * - -struct tep_event pass:[*]*tep_get_event*(struct tep_handle pass:[*]_tep_, int _index_); -struct tep_event pass:[*]*tep_get_first_event*(struct tep_handle pass:[*]_tep_); -int *tep_get_events_count*(struct tep_handle pass:[*]_tep_); --- - -DESCRIPTION ------------ -The _tep_get_event()_ function returns a pointer to event at the given _index_. -The _tep_ argument is trace event parser context, the _index_ is the index of -the requested event. - -The _tep_get_first_event()_ function returns a pointer to the first event. -As events are stored in an array, this function returns the pointer to the -beginning of the array. The _tep_ argument is trace event parser context. - -The _tep_get_events_count()_ function returns the number of the events -in the array. The _tep_ argument is trace event parser context. - -RETURN VALUE ------------- -The _tep_get_event()_ returns a pointer to the event located at _index_. -NULL is returned in case of error, in case there are no events or _index_ is -out of range. - -The _tep_get_first_event()_ returns a pointer to the first event. NULL is -returned in case of error, or in case there are no events. - -The _tep_get_events_count()_ returns the number of the events. 0 is -returned in case of error, or in case there are no events. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -int i,count = tep_get_events_count(tep); -struct tep_event *event, *events = tep_get_first_event(tep); - -if (events == NULL) { - /* There are no events */ -} else { - for (i = 0; i < count; i++) { - event = (events+i); - /* process events[i] */ - } - - /* Get the last event */ - event = tep_get_event(tep, count-1); -} --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-event_list.txt b/tools/lib/traceevent/Documentation/libtraceevent-event_list.txt deleted file mode 100644 index fba350e5a4cb..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-event_list.txt +++ /dev/null @@ -1,122 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_list_events, tep_list_events_copy - -Get list of events, sorted by given criteria. - -SYNOPSIS --------- -[verse] --- -*#include * - -enum *tep_event_sort_type* { - _TEP_EVENT_SORT_ID_, - _TEP_EVENT_SORT_NAME_, - _TEP_EVENT_SORT_SYSTEM_, -}; - -struct tep_event pass:[*]pass:[*]*tep_list_events*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_); -struct tep_event pass:[*]pass:[*]*tep_list_events_copy*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_); --- - -DESCRIPTION ------------ -The _tep_list_events()_ function returns an array of pointers to the events, -sorted by the _sort_type_ criteria. The last element of the array is NULL. -The returned memory must not be freed, it is managed by the library. -The function is not thread safe. The _tep_ argument is trace event parser -context. The _sort_type_ argument is the required sort criteria: -[verse] --- - _TEP_EVENT_SORT_ID_ - sort by the event ID. - _TEP_EVENT_SORT_NAME_ - sort by the event (name, system, id) triplet. - _TEP_EVENT_SORT_SYSTEM_ - sort by the event (system, name, id) triplet. --- - -The _tep_list_events_copy()_ is a thread safe version of _tep_list_events()_. -It has the same behavior, but the returned array is allocated internally and -must be freed by the caller. Note that the content of the array must not be -freed (see the EXAMPLE below). - -RETURN VALUE ------------- -The _tep_list_events()_ function returns an array of pointers to events. -In case of an error, NULL is returned. The returned array must not be freed, -it is managed by the library. - -The _tep_list_events_copy()_ function returns an array of pointers to events. -In case of an error, NULL is returned. The returned array must be freed by -the caller. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -int i; -struct tep_event_format **events; - -i=0; -events = tep_list_events(tep, TEP_EVENT_SORT_ID); -if (events == NULL) { - /* Failed to get the events, sorted by ID */ -} else { - while(events[i]) { - /* walk through the list of the events, sorted by ID */ - i++; - } -} - -i=0; -events = tep_list_events_copy(tep, TEP_EVENT_SORT_NAME); -if (events == NULL) { - /* Failed to get the events, sorted by name */ -} else { - while(events[i]) { - /* walk through the list of the events, sorted by name */ - i++; - } - free(events); -} - -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-event_print.txt b/tools/lib/traceevent/Documentation/libtraceevent-event_print.txt deleted file mode 100644 index 2c6a61811118..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-event_print.txt +++ /dev/null @@ -1,130 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_print_event - Writes event information into a trace sequence. - -SYNOPSIS --------- -[verse] --- -*#include * -*#include * - -void *tep_print_event*(struct tep_handle pass:[*]_tep_, struct trace_seqpass:[*]_s_, struct tep_record pass:[*]_record_, const char pass:[*]_fmt_, _..._) --- - -DESCRIPTION ------------ - -The _tep_print_event()_ function parses the event information of the given -_record_ and writes it into the trace sequence _s_, according to the format -string _fmt_. The desired information is specified after the format string. -The _fmt_ is printf-like format string, following arguments are supported: -[verse] --- - TEP_PRINT_PID, "%d" - PID of the event. - TEP_PRINT_CPU, "%d" - Event CPU. - TEP_PRINT_COMM, "%s" - Event command string. - TEP_PRINT_NAME, "%s" - Event name. - TEP_PRINT_LATENCY, "%s" - Latency of the event. It prints 4 or more - fields - interrupt state, scheduling state, - current context, and preemption count. - Field 1 is the interrupt enabled state: - d : Interrupts are disabled - . : Interrupts are enabled - X : The architecture does not support this - information - Field 2 is the "need resched" state. - N : The task is set to call the scheduler when - possible, as another higher priority task - may need to be scheduled in. - . : The task is not set to call the scheduler. - Field 3 is the context state. - . : Normal context - s : Soft interrupt context - h : Hard interrupt context - H : Hard interrupt context which triggered - during soft interrupt context. - z : NMI context - Z : NMI context which triggered during hard - interrupt context - Field 4 is the preemption count. - . : The preempt count is zero. - On preemptible kernels (where the task can be scheduled - out in arbitrary locations while in kernel context), the - preempt count, when non zero, will prevent the kernel - from scheduling out the current task. The preempt count - number is displayed when it is not zero. - Depending on the kernel, it may show other fields - (lock depth, or migration disabled, which are unique to - specialized kernels). - TEP_PRINT_TIME, %d - event time stamp. A divisor and precision can be - specified as part of this format string: - "%precision.divisord". Example: - "%3.1000d" - divide the time by 1000 and print the first - 3 digits before the dot. Thus, the time stamp - "123456000" will be printed as "123.456" - TEP_PRINT_INFO, "%s" - event information. - TEP_PRINT_INFO_RAW, "%s" - event information, in raw format. - --- -EXAMPLE -------- -[source,c] --- -#include -#include -... -struct trace_seq seq; -trace_seq_init(&seq); -struct tep_handle *tep = tep_alloc(); -... -void print_my_event(struct tep_record *record) -{ - trace_seq_reset(&seq); - tep_print_event(tep, s, record, "%16s-%-5d [%03d] %s %6.1000d %s %s", - TEP_PRINT_COMM, TEP_PRINT_PID, TEP_PRINT_CPU, - TEP_PRINT_LATENCY, TEP_PRINT_TIME, TEP_PRINT_NAME, - TEP_PRINT_INFO); -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*trace-seq.h* - Header file to include in order to have access to trace sequences related APIs. - Trace sequences are used to allow a function to call several other functions - to create a string of data to use. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-field_find.txt b/tools/lib/traceevent/Documentation/libtraceevent-field_find.txt deleted file mode 100644 index 0896af5b9eff..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-field_find.txt +++ /dev/null @@ -1,118 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_find_common_field, tep_find_field, tep_find_any_field - -Search for a field in an event. - -SYNOPSIS --------- -[verse] --- -*#include * - -struct tep_format_field pass:[*]*tep_find_common_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_); -struct tep_format_field pass:[*]*tep_find_field*(struct tep_event_ormat pass:[*]_event_, const char pass:[*]_name_); -struct tep_format_field pass:[*]*tep_find_any_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_); --- - -DESCRIPTION ------------ -These functions search for a field with given name in an event. The field -returned can be used to find the field content from within a data record. - -The _tep_find_common_field()_ function searches for a common field with _name_ -in the _event_. - -The _tep_find_field()_ function searches for an event specific field with -_name_ in the _event_. - -The _tep_find_any_field()_ function searches for any field with _name_ in the -_event_. - -RETURN VALUE ------------- -The _tep_find_common_field(), _tep_find_field()_ and _tep_find_any_field()_ -functions return a pointer to the found field, or NULL in case there is no field -with the requested name. - -EXAMPLE -------- -[source,c] --- -#include -... -void get_htimer_info(struct tep_handle *tep, struct tep_record *record) -{ - struct tep_format_field *field; - struct tep_event *event; - long long softexpires; - int mode; - int pid; - - event = tep_find_event_by_name(tep, "timer", "hrtimer_start"); - - field = tep_find_common_field(event, "common_pid"); - if (field == NULL) { - /* Cannot find "common_pid" field in the event */ - } else { - /* Get pid from the data record */ - pid = tep_read_number(tep, record->data + field->offset, - field->size); - } - - field = tep_find_field(event, "softexpires"); - if (field == NULL) { - /* Cannot find "softexpires" event specific field in the event */ - } else { - /* Get softexpires parameter from the data record */ - softexpires = tep_read_number(tep, record->data + field->offset, - field->size); - } - - field = tep_find_any_field(event, "mode"); - if (field == NULL) { - /* Cannot find "mode" field in the event */ - } else - { - /* Get mode parameter from the data record */ - mode = tep_read_number(tep, record->data + field->offset, - field->size); - } -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-field_get_val.txt b/tools/lib/traceevent/Documentation/libtraceevent-field_get_val.txt deleted file mode 100644 index 6324f0d48aeb..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-field_get_val.txt +++ /dev/null @@ -1,122 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_get_any_field_val, tep_get_common_field_val, tep_get_field_val, -tep_get_field_raw - Get value of a field. - -SYNOPSIS --------- -[verse] --- -*#include * -*#include * - -int *tep_get_any_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); -int *tep_get_common_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); -int *tep_get_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); -void pass:[*]*tep_get_field_raw*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int pass:[*]_len_, int _err_); --- - -DESCRIPTION ------------ -These functions can be used to find a field and retrieve its value. - -The _tep_get_any_field_val()_ function searches in the _record_ for a field -with _name_, part of the _event_. If the field is found, its value is stored in -_val_. If there is an error and _err_ is not zero, then an error string is -written into _s_. - -The _tep_get_common_field_val()_ function does the same as -_tep_get_any_field_val()_, but searches only in the common fields. This works -for any event as all events include the common fields. - -The _tep_get_field_val()_ function does the same as _tep_get_any_field_val()_, -but searches only in the event specific fields. - -The _tep_get_field_raw()_ function searches in the _record_ for a field with -_name_, part of the _event_. If the field is found, a pointer to where the field -exists in the record's raw data is returned. The size of the data is stored in -_len_. If there is an error and _err_ is not zero, then an error string is -written into _s_. - -RETURN VALUE ------------- -The _tep_get_any_field_val()_, _tep_get_common_field_val()_ and -_tep_get_field_val()_ functions return 0 on success, or -1 in case of an error. - -The _tep_get_field_raw()_ function returns a pointer to field's raw data, and -places the length of this data in _len_. In case of an error NULL is returned. - -EXAMPLE -------- -[source,c] --- -#include -#include -... -struct tep_handle *tep = tep_alloc(); -... -struct tep_event *event = tep_find_event_by_name(tep, "kvm", "kvm_exit"); -... -void process_record(struct tep_record *record) -{ - int len; - char *comm; - struct tep_event_format *event; - unsigned long long val; - - event = tep_find_event_by_record(pevent, record); - if (event != NULL) { - if (tep_get_common_field_val(NULL, event, "common_type", - record, &val, 0) == 0) { - /* Got the value of common type field */ - } - if (tep_get_field_val(NULL, event, "pid", record, &val, 0) == 0) { - /* Got the value of pid specific field */ - } - comm = tep_get_field_raw(NULL, event, "comm", record, &len, 0); - if (comm != NULL) { - /* Got a pointer to the comm event specific field */ - } - } -} --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*trace-seq.h* - Header file to include in order to have access to trace sequences - related APIs. Trace sequences are used to allow a function to call - several other functions to create a string of data to use. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-field_print.txt b/tools/lib/traceevent/Documentation/libtraceevent-field_print.txt deleted file mode 100644 index 9a9df98ac44d..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-field_print.txt +++ /dev/null @@ -1,126 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_print_field, tep_print_fields, tep_print_num_field, tep_print_func_field - -Print the field content. - -SYNOPSIS --------- -[verse] --- -*#include * -*#include * - -void *tep_print_field*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, struct tep_format_field pass:[*]_field_); -void *tep_print_fields*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, int _size_, struct tep_event pass:[*]_event_); -int *tep_print_num_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_); -int *tep_print_func_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_); --- - -DESCRIPTION ------------ -These functions print recorded field's data, according to the field's type. - -The _tep_print_field()_ function extracts from the recorded raw _data_ value of -the _field_ and prints it into _s_, according to the field type. - -The _tep_print_fields()_ prints each field name followed by the record's field -value according to the field's type: -[verse] --- -"field1_name=field1_value field2_name=field2_value ..." --- -It iterates all fields of the _event_, and calls _tep_print_field()_ for each of -them. - -The _tep_print_num_field()_ function prints a numeric field with given format -string. A search is performed in the _event_ for a field with _name_. If such -field is found, its value is extracted from the _record_ and is printed in the -_s_, according to the given format string _fmt_. If the argument _err_ is -non-zero, and an error occures - it is printed in the _s_. - -The _tep_print_func_field()_ function prints a function field with given format -string. A search is performed in the _event_ for a field with _name_. If such -field is found, its value is extracted from the _record_. The value is assumed -to be a function address, and a search is perform to find the name of this -function. The function name (if found) and its address are printed in the _s_, -according to the given format string _fmt_. If the argument _err_ is non-zero, -and an error occures - it is printed in _s_. - -RETURN VALUE ------------- -The _tep_print_num_field()_ and _tep_print_func_field()_ functions return 1 -on success, -1 in case of an error or 0 if the print buffer _s_ is full. - -EXAMPLE -------- -[source,c] --- -#include -#include -... -struct tep_handle *tep = tep_alloc(); -... -struct trace_seq seq; -trace_seq_init(&seq); -struct tep_event *event = tep_find_event_by_name(tep, "timer", "hrtimer_start"); -... -void process_record(struct tep_record *record) -{ - struct tep_format_field *field_pid = tep_find_common_field(event, "common_pid"); - - trace_seq_reset(&seq); - - /* Print the value of "common_pid" */ - tep_print_field(&seq, record->data, field_pid); - - /* Print all fields of the "hrtimer_start" event */ - tep_print_fields(&seq, record->data, record->size, event); - - /* Print the value of "expires" field with custom format string */ - tep_print_num_field(&seq, " timer expires in %llu ", event, "expires", record, 0); - - /* Print the address and the name of "function" field with custom format string */ - tep_print_func_field(&seq, " timer function is %s ", event, "function", record, 0); - } - ... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*trace-seq.h* - Header file to include in order to have access to trace sequences related APIs. - Trace sequences are used to allow a function to call several other functions - to create a string of data to use. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-field_read.txt b/tools/lib/traceevent/Documentation/libtraceevent-field_read.txt deleted file mode 100644 index 64e9e25d3fd9..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-field_read.txt +++ /dev/null @@ -1,81 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_read_number_field - Reads a number from raw data. - -SYNOPSIS --------- -[verse] --- -*#include * - -int *tep_read_number_field*(struct tep_format_field pass:[*]_field_, const void pass:[*]_data_, unsigned long long pass:[*]_value_); --- - -DESCRIPTION ------------ -The _tep_read_number_field()_ function reads the value of the _field_ from the -raw _data_ and stores it in the _value_. The function sets the _value_ according -to the endianness of the raw data and the current machine and stores it in -_value_. - -RETURN VALUE ------------- -The _tep_read_number_field()_ function retunrs 0 in case of success, or -1 in -case of an error. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -struct tep_event *event = tep_find_event_by_name(tep, "timer", "hrtimer_start"); -... -void process_record(struct tep_record *record) -{ - unsigned long long pid; - struct tep_format_field *field_pid = tep_find_common_field(event, "common_pid"); - - if (tep_read_number_field(field_pid, record->data, &pid) != 0) { - /* Failed to get "common_pid" value */ - } -} -... --- -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-fields.txt b/tools/lib/traceevent/Documentation/libtraceevent-fields.txt deleted file mode 100644 index 1ccb531d5114..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-fields.txt +++ /dev/null @@ -1,105 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_event_common_fields, tep_event_fields - Get a list of fields for an event. - -SYNOPSIS --------- -[verse] --- -*#include * - -struct tep_format_field pass:[*]pass:[*]*tep_event_common_fields*(struct tep_event pass:[*]_event_); -struct tep_format_field pass:[*]pass:[*]*tep_event_fields*(struct tep_event pass:[*]_event_); --- - -DESCRIPTION ------------ -The _tep_event_common_fields()_ function returns an array of pointers to common -fields for the _event_. The array is allocated in the function and must be freed -by free(). The last element of the array is NULL. - -The _tep_event_fields()_ function returns an array of pointers to event specific -fields for the _event_. The array is allocated in the function and must be freed -by free(). The last element of the array is NULL. - -RETURN VALUE ------------- -Both _tep_event_common_fields()_ and _tep_event_fields()_ functions return -an array of pointers to tep_format_field structures in case of success, or -NULL in case of an error. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -int i; -struct tep_format_field **fields; -struct tep_event *event = tep_find_event_by_name(tep, "kvm", "kvm_exit"); -if (event != NULL) { - fields = tep_event_common_fields(event); - if (fields != NULL) { - i = 0; - while (fields[i]) { - /* - walk through the list of the common fields - of the kvm_exit event - */ - i++; - } - free(fields); - } - fields = tep_event_fields(event); - if (fields != NULL) { - i = 0; - while (fields[i]) { - /* - walk through the list of the event specific - fields of the kvm_exit event - */ - i++; - } - free(fields); - } -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-file_endian.txt b/tools/lib/traceevent/Documentation/libtraceevent-file_endian.txt deleted file mode 100644 index f401ad311047..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-file_endian.txt +++ /dev/null @@ -1,91 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_is_file_bigendian, tep_set_file_bigendian - Get / set the endianness of the -raw data being accessed by the tep handler. - -SYNOPSIS --------- -[verse] --- -*#include * - -enum *tep_endian* { - TEP_LITTLE_ENDIAN = 0, - TEP_BIG_ENDIAN -}; - -bool *tep_is_file_bigendian*(struct tep_handle pass:[*]_tep_); -void *tep_set_file_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_); - --- -DESCRIPTION ------------ -The _tep_is_file_bigendian()_ function gets the endianness of the raw data, -being accessed by the tep handler. The _tep_ argument is trace event parser -context. - -The _tep_set_file_bigendian()_ function sets the endianness of raw data being -accessed by the tep handler. The _tep_ argument is trace event parser context. -[verse] --- -The _endian_ argument is the endianness: - _TEP_LITTLE_ENDIAN_ - the raw data is in little endian format, - _TEP_BIG_ENDIAN_ - the raw data is in big endian format. --- -RETURN VALUE ------------- -The _tep_is_file_bigendian()_ function returns true if the data is in bigendian -format, false otherwise. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... - tep_set_file_bigendian(tep, TEP_LITTLE_ENDIAN); -... - if (tep_is_file_bigendian(tep)) { - /* The raw data is in big endian */ - } else { - /* The raw data is in little endian */ - } --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-filter.txt b/tools/lib/traceevent/Documentation/libtraceevent-filter.txt deleted file mode 100644 index 4a9962d8cb59..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-filter.txt +++ /dev/null @@ -1,209 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_filter_alloc, tep_filter_free, tep_filter_reset, tep_filter_make_string, -tep_filter_copy, tep_filter_compare, tep_filter_match, tep_event_filtered, -tep_filter_remove_event, tep_filter_strerror, tep_filter_add_filter_str - -Event filter related APIs. - -SYNOPSIS --------- -[verse] --- -*#include * - -struct tep_event_filter pass:[*]*tep_filter_alloc*(struct tep_handle pass:[*]_tep_); -void *tep_filter_free*(struct tep_event_filter pass:[*]_filter_); -void *tep_filter_reset*(struct tep_event_filter pass:[*]_filter_); -enum tep_errno *tep_filter_add_filter_str*(struct tep_event_filter pass:[*]_filter_, const char pass:[*]_filter_str_); -int *tep_event_filtered*(struct tep_event_filter pass:[*]_filter_, int _event_id_); -int *tep_filter_remove_event*(struct tep_event_filter pass:[*]_filter_, int _event_id_); -enum tep_errno *tep_filter_match*(struct tep_event_filter pass:[*]_filter_, struct tep_record pass:[*]_record_); -int *tep_filter_copy*(struct tep_event_filter pass:[*]_dest_, struct tep_event_filter pass:[*]_source_); -int *tep_filter_compare*(struct tep_event_filter pass:[*]_filter1_, struct tep_event_filter pass:[*]_filter2_); -char pass:[*]*tep_filter_make_string*(struct tep_event_filter pass:[*]_filter_, int _event_id_); -int *tep_filter_strerror*(struct tep_event_filter pass:[*]_filter_, enum tep_errno _err_, char pass:[*]buf, size_t _buflen_); --- - -DESCRIPTION ------------ -Filters can be attached to traced events. They can be used to filter out various -events when outputting them. Each event can be filtered based on its parameters, -described in the event's format file. This set of functions can be used to -create, delete, modify and attach event filters. - -The _tep_filter_alloc()_ function creates a new event filter. The _tep_ argument -is the trace event parser context. - -The _tep_filter_free()_ function frees an event filter and all resources that it -had used. - -The _tep_filter_reset()_ function removes all rules from an event filter and -resets it. - -The _tep_filter_add_filter_str()_ function adds a new rule to the _filter_. The -_filter_str_ argument is the filter string, that contains the rule. - -The _tep_event_filtered()_ function checks if the event with _event_id_ has -_filter_. - -The _tep_filter_remove_event()_ function removes a _filter_ for an event with -_event_id_. - -The _tep_filter_match()_ function tests if a _record_ matches given _filter_. - -The _tep_filter_copy()_ function copies a _source_ filter into a _dest_ filter. - -The _tep_filter_compare()_ function compares two filers - _filter1_ and _filter2_. - -The _tep_filter_make_string()_ function constructs a string, displaying -the _filter_ contents for given _event_id_. - -The _tep_filter_strerror()_ function copies the _filter_ error buffer into the -given _buf_ with the size _buflen_. If the error buffer is empty, in the _buf_ -is copied a string, describing the error _err_. - -RETURN VALUE ------------- -The _tep_filter_alloc()_ function returns a pointer to the newly created event -filter, or NULL in case of an error. - -The _tep_filter_add_filter_str()_ function returns 0 if the rule was -successfully added or a negative error code. Use _tep_filter_strerror()_ to see -actual error message in case of an error. - -The _tep_event_filtered()_ function returns 1 if the filter is found for given -event, or 0 otherwise. - -The _tep_filter_remove_event()_ function returns 1 if the vent was removed, or -0 if the event was not found. - -The _tep_filter_match()_ function returns _tep_errno_, according to the result: -[verse] --- -_pass:[TEP_ERRNO__FILTER_MATCH]_ - filter found for event, the record matches. -_pass:[TEP_ERRNO__FILTER_MISS]_ - filter found for event, the record does not match. -_pass:[TEP_ERRNO__FILTER_NOT_FOUND]_ - no filter found for record's event. -_pass:[TEP_ERRNO__NO_FILTER]_ - no rules in the filter. --- -or any other _tep_errno_, if an error occurred during the test. - -The _tep_filter_copy()_ function returns 0 on success or -1 if not all rules - were copied. - -The _tep_filter_compare()_ function returns 1 if the two filters hold the same -content, or 0 if they do not. - -The _tep_filter_make_string()_ function returns a string, which must be freed -with free(), or NULL in case of an error. - -The _tep_filter_strerror()_ function returns 0 if message was filled -successfully, or -1 in case of an error. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -char errstr[200]; -int ret; - -struct tep_event_filter *filter = tep_filter_alloc(tep); -struct tep_event_filter *filter1 = tep_filter_alloc(tep); -ret = tep_filter_add_filter_str(filter, "sched/sched_wakeup:target_cpu==1"); -if(ret < 0) { - tep_filter_strerror(filter, ret, errstr, sizeof(errstr)); - /* Failed to add a new rule to the filter, the error string is in errstr */ -} -if (tep_filter_copy(filter1, filter) != 0) { - /* Failed to copy filter in filter1 */ -} -... -if (tep_filter_compare(filter, filter1) != 1) { - /* Both filters are different */ -} -... -void process_record(struct tep_handle *tep, struct tep_record *record) -{ - struct tep_event *event; - char *fstring; - - event = tep_find_event_by_record(tep, record); - - if (tep_event_filtered(filter, event->id) == 1) { - /* The event has filter */ - fstring = tep_filter_make_string(filter, event->id); - if (fstring != NULL) { - /* The filter for the event is in fstring */ - free(fstring); - } - } - - switch (tep_filter_match(filter, record)) { - case TEP_ERRNO__FILTER_MATCH: - /* The filter matches the record */ - break; - case TEP_ERRNO__FILTER_MISS: - /* The filter does not match the record */ - break; - case TEP_ERRNO__FILTER_NOT_FOUND: - /* No filter found for record's event */ - break; - case TEP_ERRNO__NO_FILTER: - /* There are no rules in the filter */ - break - default: - /* An error occurred during the test */ - break; - } - - if (tep_filter_remove_event(filter, event->id) == 1) { - /* The event was removed from the filter */ - } -} - -... -tep_filter_reset(filter); -... -tep_filter_free(filter); -tep_filter_free(filter1); -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt b/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt deleted file mode 100644 index f6aca0df2151..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-func_apis.txt +++ /dev/null @@ -1,183 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_find_function, tep_find_function_address, tep_set_function_resolver, -tep_reset_function_resolver, tep_register_function, tep_register_print_string - -function related tep APIs - -SYNOPSIS --------- -[verse] --- -*#include * - -typedef char pass:[*](*tep_func_resolver_t*)(void pass:[*]_priv_, unsigned long long pass:[*]_addrp_, char pass:[**]_modp_); -int *tep_set_function_resolver*(struct tep_handle pass:[*]_tep_, tep_func_resolver_t pass:[*]_func_, void pass:[*]_priv_); -void *tep_reset_function_resolver*(struct tep_handle pass:[*]_tep_); -const char pass:[*]*tep_find_function*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_); -unsigned long long *tep_find_function_address*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_); -int *tep_register_function*(struct tep_handle pass:[*]_tep_, char pass:[*]_name_, unsigned long long _addr_, char pass:[*]_mod_); -int *tep_register_print_string*(struct tep_handle pass:[*]_tep_, const char pass:[*]_fmt_, unsigned long long _addr_); --- - -DESCRIPTION ------------ -Some tools may have already a way to resolve the kernel functions. These APIs -allow them to keep using it instead of duplicating all the entries inside. - -The _tep_func_resolver_t_ type is the prototype of the alternative kernel -functions resolver. This function receives a pointer to its custom context -(set with the _tep_set_function_resolver()_ call ) and the address of a kernel -function, which has to be resolved. In case of success, it should return -the name of the function and its module (if any) in _modp_. - -The _tep_set_function_resolver()_ function registers _func_ as an alternative -kernel functions resolver. The _tep_ argument is trace event parser context. -The _priv_ argument is a custom context of the _func_ function. The function -resolver is used by the APIs _tep_find_function()_, -_tep_find_function_address()_, and _tep_print_func_field()_ to resolve -a function address to a function name. - -The _tep_reset_function_resolver()_ function resets the kernel functions -resolver to the default function. The _tep_ argument is trace event parser -context. - - -These APIs can be used to find function name and start address, by given -address. The given address does not have to be exact, it will select -the function that would contain it. - -The _tep_find_function()_ function returns the function name, which contains the -given address _addr_. The _tep_ argument is the trace event parser context. - -The _tep_find_function_address()_ function returns the function start address, -by given address _addr_. The _addr_ does not have to be exact, it will select -the function that would contain it. The _tep_ argument is the trace event -parser context. - -The _tep_register_function()_ function registers a function name mapped to an -address and (optional) module. This mapping is used in case the function tracer -or events have "%pS" parameter in its format string. It is common to pass in -the kallsyms function names with their corresponding addresses with this -function. The _tep_ argument is the trace event parser context. The _name_ is -the name of the function, the string is copied internally. The _addr_ is the -start address of the function. The _mod_ is the kernel module the function may -be in (NULL for none). - -The _tep_register_print_string()_ function registers a string by the address -it was stored in the kernel. Some strings internal to the kernel with static -address are passed to certain events. The "%s" in the event's format field -which has an address needs to know what string would be at that address. The -tep_register_print_string() supplies the parsing with the mapping between kernel -addresses and those strings. The _tep_ argument is the trace event parser -context. The _fmt_ is the string to register, it is copied internally. -The _addr_ is the address the string was located at. - - -RETURN VALUE ------------- -The _tep_set_function_resolver()_ function returns 0 in case of success, or -1 -in case of an error. - -The _tep_find_function()_ function returns the function name, or NULL in case -it cannot be found. - -The _tep_find_function_address()_ function returns the function start address, -or 0 in case it cannot be found. - -The _tep_register_function()_ function returns 0 in case of success. In case of -an error -1 is returned, and errno is set to the appropriate error number. - -The _tep_register_print_string()_ function returns 0 in case of success. In case -of an error -1 is returned, and errno is set to the appropriate error number. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -char *my_resolve_kernel_addr(void *context, - unsigned long long *addrp, char **modp) -{ - struct db *function_database = context; - struct symbol *sym = sql_lookup(function_database, *addrp); - - if (!sym) - return NULL; - - *modp = sym->module_name; - return sym->name; -} - -void show_function( unsigned long long addr) -{ - unsigned long long fstart; - const char *fname; - - if (tep_set_function_resolver(tep, my_resolve_kernel_addr, - function_database) != 0) { - /* failed to register my_resolve_kernel_addr */ - } - - /* These APIs use my_resolve_kernel_addr() to resolve the addr */ - fname = tep_find_function(tep, addr); - fstart = tep_find_function_address(tep, addr); - - /* - addr is in function named fname, starting at fstart address, - at offset (addr - fstart) - */ - - tep_reset_function_resolver(tep); - -} -... - if (tep_register_function(tep, "kvm_exit", - (unsigned long long) 0x12345678, "kvm") != 0) { - /* Failed to register kvm_exit address mapping */ - } -... - if (tep_register_print_string(tep, "print string", - (unsigned long long) 0x87654321, NULL) != 0) { - /* Failed to register "print string" address mapping */ - } -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-func_find.txt b/tools/lib/traceevent/Documentation/libtraceevent-func_find.txt deleted file mode 100644 index 04840e244445..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-func_find.txt +++ /dev/null @@ -1,88 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_find_function,tep_find_function_address - Find function name / start address. - -SYNOPSIS --------- -[verse] --- -*#include * - -const char pass:[*]*tep_find_function*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_); -unsigned long long *tep_find_function_address*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_); --- - -DESCRIPTION ------------ -These functions can be used to find function name and start address, by given -address. The given address does not have to be exact, it will select the function -that would contain it. - -The _tep_find_function()_ function returns the function name, which contains the -given address _addr_. The _tep_ argument is the trace event parser context. - -The _tep_find_function_address()_ function returns the function start address, -by given address _addr_. The _addr_ does not have to be exact, it will select the -function that would contain it. The _tep_ argument is the trace event parser context. - -RETURN VALUE ------------- -The _tep_find_function()_ function returns the function name, or NULL in case -it cannot be found. - -The _tep_find_function_address()_ function returns the function start address, -or 0 in case it cannot be found. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -void show_function( unsigned long long addr) -{ - const char *fname = tep_find_function(tep, addr); - unsigned long long fstart = tep_find_function_address(tep, addr); - - /* addr is in function named fname, starting at fstart address, at offset (addr - fstart) */ -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-handle.txt b/tools/lib/traceevent/Documentation/libtraceevent-handle.txt deleted file mode 100644 index 45b20172e262..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-handle.txt +++ /dev/null @@ -1,101 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_alloc, tep_free,tep_ref, tep_unref,tep_get_ref - Create, destroy, manage -references of trace event parser context. - -SYNOPSIS --------- -[verse] --- -*#include * - -struct tep_handle pass:[*]*tep_alloc*(void); -void *tep_free*(struct tep_handle pass:[*]_tep_); -void *tep_ref*(struct tep_handle pass:[*]_tep_); -void *tep_unref*(struct tep_handle pass:[*]_tep_); -int *tep_get_ref*(struct tep_handle pass:[*]_tep_); --- - -DESCRIPTION ------------ -These are the main functions to create and destroy tep_handle - the main -structure, representing the trace event parser context. This context is used as -the input parameter of most library APIs. - -The _tep_alloc()_ function allocates and initializes the tep context. - -The _tep_free()_ function will decrement the reference of the _tep_ handler. -When there is no more references, then it will free the handler, as well -as clean up all its resources that it had used. The argument _tep_ is -the pointer to the trace event parser context. - -The _tep_ref()_ function adds a reference to the _tep_ handler. - -The _tep_unref()_ function removes a reference from the _tep_ handler. When -the last reference is removed, the _tep_ is destroyed, and all resources that -it had used are cleaned up. - -The _tep_ref_get()_ functions gets the current references of the _tep_ handler. - -RETURN VALUE ------------- -_tep_alloc()_ returns a pointer to a newly created tep_handle structure. -NULL is returned in case there is not enough free memory to allocate it. - -_tep_ref_get()_ returns the current references of _tep_. -If _tep_ is NULL, 0 is returned. - -EXAMPLE -------- -[source,c] --- -#include - -... -struct tep_handle *tep = tep_alloc(); -... -int ref = tep_get_ref(tep); -tep_ref(tep); -if ( (ref+1) != tep_get_ref(tep)) { - /* Something wrong happened, the counter is not incremented by 1 */ -} -tep_unref(tep); -... -tep_free(tep); -... --- -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-header_page.txt b/tools/lib/traceevent/Documentation/libtraceevent-header_page.txt deleted file mode 100644 index 615d117dc39f..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-header_page.txt +++ /dev/null @@ -1,102 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_get_header_page_size, tep_get_header_timestamp_size, tep_is_old_format - -Get the data stored in the header page, in kernel context. - -SYNOPSIS --------- -[verse] --- -*#include * - -int *tep_get_header_page_size*(struct tep_handle pass:[*]_tep_); -int *tep_get_header_timestamp_size*(struct tep_handle pass:[*]_tep_); -bool *tep_is_old_format*(struct tep_handle pass:[*]_tep_); --- -DESCRIPTION ------------ -These functions retrieve information from kernel context, stored in tracefs -events/header_page. Old kernels do not have header page info, so default values -from user space context are used. - -The _tep_get_header_page_size()_ function returns the size of a long integer, -in kernel context. The _tep_ argument is trace event parser context. -This information is retrieved from tracefs events/header_page, "commit" field. - -The _tep_get_header_timestamp_size()_ function returns the size of timestamps, -in kernel context. The _tep_ argument is trace event parser context. This -information is retrieved from tracefs events/header_page, "timestamp" field. - -The _tep_is_old_format()_ function returns true if the kernel predates -the addition of events/header_page, otherwise it returns false. - -RETURN VALUE ------------- -The _tep_get_header_page_size()_ function returns the size of a long integer, -in bytes. - -The _tep_get_header_timestamp_size()_ function returns the size of timestamps, -in bytes. - -The _tep_is_old_format()_ function returns true, if an old kernel is used to -generate the tracing data, which has no event/header_page. If the kernel is new, -or _tep_ is NULL, false is returned. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... - int longsize; - int timesize; - bool old; - - longsize = tep_get_header_page_size(tep); - timesize = tep_get_header_timestamp_size(tep); - old = tep_is_old_format(tep); - - printf ("%s kernel is used to generate the tracing data.\n", - old?"Old":"New"); - printf("The size of a long integer is %d bytes.\n", longsize); - printf("The timestamps size is %d bytes.\n", timesize); -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-host_endian.txt b/tools/lib/traceevent/Documentation/libtraceevent-host_endian.txt deleted file mode 100644 index d5d375eb8d1e..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-host_endian.txt +++ /dev/null @@ -1,104 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_is_bigendian, tep_is_local_bigendian, tep_set_local_bigendian - Get / set -the endianness of the local machine. - -SYNOPSIS --------- -[verse] --- -*#include * - -enum *tep_endian* { - TEP_LITTLE_ENDIAN = 0, - TEP_BIG_ENDIAN -}; - -int *tep_is_bigendian*(void); -bool *tep_is_local_bigendian*(struct tep_handle pass:[*]_tep_); -void *tep_set_local_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_); --- - -DESCRIPTION ------------ - -The _tep_is_bigendian()_ gets the endianness of the machine, executing -the function. - -The _tep_is_local_bigendian()_ function gets the endianness of the local -machine, saved in the _tep_ handler. The _tep_ argument is the trace event -parser context. This API is a bit faster than _tep_is_bigendian()_, as it -returns cached endianness of the local machine instead of checking it each time. - -The _tep_set_local_bigendian()_ function sets the endianness of the local -machine in the _tep_ handler. The _tep_ argument is trace event parser context. -The _endian_ argument is the endianness: -[verse] --- - _TEP_LITTLE_ENDIAN_ - the machine is little endian, - _TEP_BIG_ENDIAN_ - the machine is big endian. --- - -RETURN VALUE ------------- -The _tep_is_bigendian()_ function returns non zero if the endianness of the -machine, executing the code, is big endian and zero otherwise. - -The _tep_is_local_bigendian()_ function returns true, if the endianness of the -local machine, saved in the _tep_ handler, is big endian, or false otherwise. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... - if (tep_is_bigendian()) - tep_set_local_bigendian(tep, TEP_BIG_ENDIAN); - else - tep_set_local_bigendian(tep, TEP_LITTLE_ENDIAN); -... - if (tep_is_local_bigendian(tep)) - printf("This machine you are running on is bigendian\n"); - else - printf("This machine you are running on is little endian\n"); - --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-long_size.txt b/tools/lib/traceevent/Documentation/libtraceevent-long_size.txt deleted file mode 100644 index 01d78ea2519a..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-long_size.txt +++ /dev/null @@ -1,78 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_get_long_size, tep_set_long_size - Get / set the size of a long integer on -the machine, where the trace is generated, in bytes - -SYNOPSIS --------- -[verse] --- -*#include * - -int *tep_get_long_size*(strucqt tep_handle pass:[*]_tep_); -void *tep_set_long_size*(struct tep_handle pass:[*]_tep_, int _long_size_); --- - -DESCRIPTION ------------ -The _tep_get_long_size()_ function returns the size of a long integer on the machine, -where the trace is generated. The _tep_ argument is trace event parser context. - -The _tep_set_long_size()_ function sets the size of a long integer on the machine, -where the trace is generated. The _tep_ argument is trace event parser context. -The _long_size_ is the size of a long integer, in bytes. - -RETURN VALUE ------------- -The _tep_get_long_size()_ function returns the size of a long integer on the machine, -where the trace is generated, in bytes. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -tep_set_long_size(tep, 4); -... -int long_size = tep_get_long_size(tep); -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-page_size.txt b/tools/lib/traceevent/Documentation/libtraceevent-page_size.txt deleted file mode 100644 index 452c0cfa1822..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-page_size.txt +++ /dev/null @@ -1,82 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_get_page_size, tep_set_page_size - Get / set the size of a memory page on -the machine, where the trace is generated - -SYNOPSIS --------- -[verse] --- -*#include * - -int *tep_get_page_size*(struct tep_handle pass:[*]_tep_); -void *tep_set_page_size*(struct tep_handle pass:[*]_tep_, int _page_size_); --- - -DESCRIPTION ------------ -The _tep_get_page_size()_ function returns the size of a memory page on -the machine, where the trace is generated. The _tep_ argument is trace -event parser context. - -The _tep_set_page_size()_ function stores in the _tep_ context the size of a -memory page on the machine, where the trace is generated. -The _tep_ argument is trace event parser context. -The _page_size_ argument is the size of a memory page, in bytes. - -RETURN VALUE ------------- -The _tep_get_page_size()_ function returns size of the memory page, in bytes. - -EXAMPLE -------- -[source,c] --- -#include -#include -... -struct tep_handle *tep = tep_alloc(); -... - int page_size = getpagesize(); - - tep_set_page_size(tep, page_size); - - printf("The page size for this machine is %d\n", tep_get_page_size(tep)); - --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-parse_event.txt b/tools/lib/traceevent/Documentation/libtraceevent-parse_event.txt deleted file mode 100644 index f248114ca1ff..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-parse_event.txt +++ /dev/null @@ -1,90 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_parse_event, tep_parse_format - Parse the event format information - -SYNOPSIS --------- -[verse] --- -*#include * - -enum tep_errno *tep_parse_event*(struct tep_handle pass:[*]_tep_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_); -enum tep_errno *tep_parse_format*(struct tep_handle pass:[*]_tep_, struct tep_event pass:[*]pass:[*]_eventp_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_); --- - -DESCRIPTION ------------ -The _tep_parse_event()_ function parses the event format and creates an event -structure to quickly parse raw data for a given event. The _tep_ argument is -the trace event parser context. The created event structure is stored in the -_tep_ context. The _buf_ argument is a buffer with _size_, where the event -format data is. The event format data can be taken from -tracefs/events/.../.../format files. The _sys_ argument is the system of -the event. - -The _tep_parse_format()_ function does the same as _tep_parse_event()_. The only -difference is in the extra _eventp_ argument, where the newly created event -structure is returned. - -RETURN VALUE ------------- -Both _tep_parse_event()_ and _tep_parse_format()_ functions return 0 on success, -or TEP_ERRNO__... in case of an error. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -char *buf; -int size; -struct tep_event *event = NULL; -buf = read_file("/sys/kernel/tracing/events/ftrace/print/format", &size); -if (tep_parse_event(tep, buf, size, "ftrace") != 0) { - /* Failed to parse the ftrace print format */ -} - -if (tep_parse_format(tep, &event, buf, size, "ftrace") != 0) { - /* Failed to parse the ftrace print format */ -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-parse_head.txt b/tools/lib/traceevent/Documentation/libtraceevent-parse_head.txt deleted file mode 100644 index c90f16c7d8e6..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-parse_head.txt +++ /dev/null @@ -1,82 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_parse_header_page - Parses the data stored in the header page. - -SYNOPSIS --------- -[verse] --- -*#include * - -int *tep_parse_header_page*(struct tep_handle pass:[*]_tep_, char pass:[*]_buf_, unsigned long _size_, int _long_size_); --- - -DESCRIPTION ------------ -The _tep_parse_header_page()_ function parses the header page data from _buf_, -and initializes the _tep_, trace event parser context, with it. The buffer -_buf_ is with _size_, and is supposed to be copied from -tracefs/events/header_page. - -Some old kernels do not have header page info, in this case the -_tep_parse_header_page()_ function can be called with _size_ equal to 0. The -_tep_ context is initialized with default values. The _long_size_ can be used in -this use case, to set the size of a long integer to be used. - -RETURN VALUE ------------- -The _tep_parse_header_page()_ function returns 0 in case of success, or -1 -in case of an error. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -char *buf; -int size; -buf = read_file("/sys/kernel/tracing/events/header_page", &size); -if (tep_parse_header_page(tep, buf, size, sizeof(unsigned long)) != 0) { - /* Failed to parse the header page */ -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-plugins.txt b/tools/lib/traceevent/Documentation/libtraceevent-plugins.txt deleted file mode 100644 index 4d6394397d92..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-plugins.txt +++ /dev/null @@ -1,122 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_load_plugins, tep_unload_plugins, tep_load_plugins_hook - Load / unload traceevent plugins. - -SYNOPSIS --------- -[verse] --- -*#include * - -struct tep_plugin_list pass:[*]*tep_load_plugins*(struct tep_handle pass:[*]_tep_); -void *tep_unload_plugins*(struct tep_plugin_list pass:[*]_plugin_list_, struct tep_handle pass:[*]_tep_); -void *tep_load_plugins_hook*(struct tep_handle pass:[*]_tep_, const char pass:[*]_suffix_, - void (pass:[*]_load_plugin_)(struct tep_handle pass:[*]tep, - const char pass:[*]path, - const char pass:[*]name, - void pass:[*]data), - void pass:[*]_data_); --- - -DESCRIPTION ------------ -The _tep_load_plugins()_ function loads all plugins, located in the plugin -directories. The _tep_ argument is trace event parser context. -The plugin directories are : -[verse] --- - - Directories, specified in _tep_->plugins_dir with priority TEP_PLUGIN_FIRST - - System's plugin directory, defined at the library compile time. It - depends on the library installation prefix and usually is - _(install_preffix)/lib/traceevent/plugins_ - - Directory, defined by the environment variable _TRACEEVENT_PLUGIN_DIR_ - - User's plugin directory, located at _~/.local/lib/traceevent/plugins_ - - Directories, specified in _tep_->plugins_dir with priority TEP_PLUGIN_LAST --- -Loading of plugins can be controlled by the _tep_flags_, using the -_tep_set_flag()_ API: -[verse] --- - _TEP_DISABLE_SYS_PLUGINS_ - do not load plugins, located in - the system's plugin directory. - _TEP_DISABLE_PLUGINS_ - do not load any plugins. --- -The _tep_set_flag()_ API needs to be called before _tep_load_plugins()_, if -loading of all plugins is not the desired case. - -The _tep_unload_plugins()_ function unloads the plugins, previously loaded by -_tep_load_plugins()_. The _tep_ argument is trace event parser context. The -_plugin_list_ is the list of loaded plugins, returned by -the _tep_load_plugins()_ function. - -The _tep_load_plugins_hook_ function walks through all directories with plugins -and calls user specified _load_plugin()_ hook for each plugin file. Only files -with given _suffix_ are considered to be plugins. The _data_ is a user specified -context, passed to _load_plugin()_. Directories and the walk order are the same -as in _tep_load_plugins()_ API. - -RETURN VALUE ------------- -The _tep_load_plugins()_ function returns a list of successfully loaded plugins, -or NULL in case no plugins are loaded. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -struct tep_plugin_list *plugins = tep_load_plugins(tep); -if (plugins == NULL) { - /* no plugins are loaded */ -} -... -tep_unload_plugins(plugins, tep); -... -void print_plugin(struct tep_handle *tep, const char *path, - const char *name, void *data) -{ - pritnf("Found libtraceevent plugin %s/%s\n", path, name); -} -... -tep_load_plugins_hook(tep, ".so", print_plugin, NULL); -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_, _tep_set_flag(3)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-record_parse.txt b/tools/lib/traceevent/Documentation/libtraceevent-record_parse.txt deleted file mode 100644 index e9a69116c78b..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-record_parse.txt +++ /dev/null @@ -1,137 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_data_type, tep_data_pid,tep_data_preempt_count, tep_data_flags - -Extract common fields from a record. - -SYNOPSIS --------- -[verse] --- -*#include * - -enum *trace_flag_type* { - _TRACE_FLAG_IRQS_OFF_, - _TRACE_FLAG_IRQS_NOSUPPORT_, - _TRACE_FLAG_NEED_RESCHED_, - _TRACE_FLAG_HARDIRQ_, - _TRACE_FLAG_SOFTIRQ_, -}; - -int *tep_data_type*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); -int *tep_data_pid*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); -int *tep_data_preempt_count*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); -int *tep_data_flags*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); --- - -DESCRIPTION ------------ -This set of functions can be used to extract common fields from a record. - -The _tep_data_type()_ function gets the event id from the record _rec_. -It reads the "common_type" field. The _tep_ argument is the trace event parser -context. - -The _tep_data_pid()_ function gets the process id from the record _rec_. -It reads the "common_pid" field. The _tep_ argument is the trace event parser -context. - -The _tep_data_preempt_count()_ function gets the preemption count from the -record _rec_. It reads the "common_preempt_count" field. The _tep_ argument is -the trace event parser context. - -The _tep_data_flags()_ function gets the latency flags from the record _rec_. -It reads the "common_flags" field. The _tep_ argument is the trace event parser -context. Supported latency flags are: -[verse] --- - _TRACE_FLAG_IRQS_OFF_, Interrupts are disabled. - _TRACE_FLAG_IRQS_NOSUPPORT_, Reading IRQ flag is not supported by the architecture. - _TRACE_FLAG_NEED_RESCHED_, Task needs rescheduling. - _TRACE_FLAG_HARDIRQ_, Hard IRQ is running. - _TRACE_FLAG_SOFTIRQ_, Soft IRQ is running. --- - -RETURN VALUE ------------- -The _tep_data_type()_ function returns an integer, representing the event id. - -The _tep_data_pid()_ function returns an integer, representing the process id - -The _tep_data_preempt_count()_ function returns an integer, representing the -preemption count. - -The _tep_data_flags()_ function returns an integer, representing the latency -flags. Look at the _trace_flag_type_ enum for supported flags. - -All these functions in case of an error return a negative integer. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -void process_record(struct tep_record *record) -{ - int data; - - data = tep_data_type(tep, record); - if (data >= 0) { - /* Got the ID of the event */ - } - - data = tep_data_pid(tep, record); - if (data >= 0) { - /* Got the process ID */ - } - - data = tep_data_preempt_count(tep, record); - if (data >= 0) { - /* Got the preemption count */ - } - - data = tep_data_flags(tep, record); - if (data >= 0) { - /* Got the latency flags */ - } -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-reg_event_handler.txt b/tools/lib/traceevent/Documentation/libtraceevent-reg_event_handler.txt deleted file mode 100644 index 53d37d72a1c1..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-reg_event_handler.txt +++ /dev/null @@ -1,156 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_register_event_handler, tep_unregister_event_handler - Register / -unregisters a callback function to parse an event information. - -SYNOPSIS --------- -[verse] --- -*#include * - -enum *tep_reg_handler* { - _TEP_REGISTER_SUCCESS_, - _TEP_REGISTER_SUCCESS_OVERWRITE_, -}; - -int *tep_register_event_handler*(struct tep_handle pass:[*]_tep_, int _id_, const char pass:[*]_sys_name_, const char pass:[*]_event_name_, tep_event_handler_func _func_, void pass:[*]_context_); -int *tep_unregister_event_handler*(struct tep_handle pass:[*]tep, int id, const char pass:[*]sys_name, const char pass:[*]event_name, tep_event_handler_func func, void pass:[*]_context_); - -typedef int (*pass:[*]tep_event_handler_func*)(struct trace_seq pass:[*]s, struct tep_record pass:[*]record, struct tep_event pass:[*]event, void pass:[*]context); --- - -DESCRIPTION ------------ -The _tep_register_event_handler()_ function registers a handler function, -which is going to be called to parse the information for a given event. -The _tep_ argument is the trace event parser context. The _id_ argument is -the id of the event. The _sys_name_ argument is the name of the system, -the event belongs to. The _event_name_ argument is the name of the event. -If _id_ is >= 0, it is used to find the event, otherwise _sys_name_ and -_event_name_ are used. The _func_ is a pointer to the function, which is going -to be called to parse the event information. The _context_ argument is a pointer -to the context data, which will be passed to the _func_. If a handler function -for the same event is already registered, it will be overridden with the new -one. This mechanism allows a developer to override the parsing of a given event. -If for some reason the default print format is not sufficient, the developer -can register a function for an event to be used to parse the data instead. - -The _tep_unregister_event_handler()_ function unregisters the handler function, -previously registered with _tep_register_event_handler()_. The _tep_ argument -is the trace event parser context. The _id_, _sys_name_, _event_name_, _func_, -and _context_ are the same arguments, as when the callback function _func_ was -registered. - -The _tep_event_handler_func_ is the type of the custom event handler -function. The _s_ argument is the trace sequence, it can be used to create a -custom string, describing the event. A _record_ to get the event from is passed -as input parameter and also the _event_ - the handle to the record's event. The -_context_ is custom context, set when the custom event handler is registered. - -RETURN VALUE ------------- -The _tep_register_event_handler()_ function returns _TEP_REGISTER_SUCCESS_ -if the new handler is registered successfully or -_TEP_REGISTER_SUCCESS_OVERWRITE_ if an existing handler is overwritten. -If there is not enough memory to complete the registration, -TEP_ERRNO__MEM_ALLOC_FAILED is returned. - -The _tep_unregister_event_handler()_ function returns 0 if _func_ was removed -successful or, -1 if the event was not found. - -The _tep_event_handler_func_ should return -1 in case of an error, -or 0 otherwise. - -EXAMPLE -------- -[source,c] --- -#include -#include -... -struct tep_handle *tep = tep_alloc(); -... -int timer_expire_handler(struct trace_seq *s, struct tep_record *record, - struct tep_event *event, void *context) -{ - trace_seq_printf(s, "hrtimer="); - - if (tep_print_num_field(s, "0x%llx", event, "timer", record, 0) == -1) - tep_print_num_field(s, "0x%llx", event, "hrtimer", record, 1); - - trace_seq_printf(s, " now="); - - tep_print_num_field(s, "%llu", event, "now", record, 1); - - tep_print_func_field(s, " function=%s", event, "function", record, 0); - - return 0; -} -... - int ret; - - ret = tep_register_event_handler(tep, -1, "timer", "hrtimer_expire_entry", - timer_expire_handler, NULL); - if (ret < 0) { - char buf[32]; - - tep_strerror(tep, ret, buf, 32) - printf("Failed to register handler for hrtimer_expire_entry: %s\n", buf); - } else { - switch (ret) { - case TEP_REGISTER_SUCCESS: - printf ("Registered handler for hrtimer_expire_entry\n"); - break; - case TEP_REGISTER_SUCCESS_OVERWRITE: - printf ("Overwrote handler for hrtimer_expire_entry\n"); - break; - } - } -... - ret = tep_unregister_event_handler(tep, -1, "timer", "hrtimer_expire_entry", - timer_expire_handler, NULL); - if ( ret ) - printf ("Failed to unregister handler for hrtimer_expire_entry\n"); - --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*trace-seq.h* - Header file to include in order to have access to trace sequences - related APIs. Trace sequences are used to allow a function to call - several other functions to create a string of data to use. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-reg_print_func.txt b/tools/lib/traceevent/Documentation/libtraceevent-reg_print_func.txt deleted file mode 100644 index 708dce91ebd8..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-reg_print_func.txt +++ /dev/null @@ -1,155 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_register_print_function,tep_unregister_print_function - -Registers / Unregisters a helper function. - -SYNOPSIS --------- -[verse] --- -*#include * - -enum *tep_func_arg_type* { - TEP_FUNC_ARG_VOID, - TEP_FUNC_ARG_INT, - TEP_FUNC_ARG_LONG, - TEP_FUNC_ARG_STRING, - TEP_FUNC_ARG_PTR, - TEP_FUNC_ARG_MAX_TYPES -}; - -typedef unsigned long long (*pass:[*]tep_func_handler*)(struct trace_seq pass:[*]s, unsigned long long pass:[*]args); - -int *tep_register_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, enum tep_func_arg_type _ret_type_, char pass:[*]_name_, _..._); -int *tep_unregister_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, char pass:[*]_name_); --- - -DESCRIPTION ------------ -Some events may have helper functions in the print format arguments. -This allows a plugin to dynamically create a way to process one of -these functions. - -The _tep_register_print_function()_ registers such helper function. The _tep_ -argument is the trace event parser context. The _func_ argument is a pointer -to the helper function. The _ret_type_ argument is the return type of the -helper function, value from the _tep_func_arg_type_ enum. The _name_ is the name -of the helper function, as seen in the print format arguments. The _..._ is a -variable list of _tep_func_arg_type_ enums, the _func_ function arguments. -This list must end with _TEP_FUNC_ARG_VOID_. See 'EXAMPLE' section. - -The _tep_unregister_print_function()_ unregisters a helper function, previously -registered with _tep_register_print_function()_. The _tep_ argument is the -trace event parser context. The _func_ and _name_ arguments are the same, used -when the helper function was registered. - -The _tep_func_handler_ is the type of the helper function. The _s_ argument is -the trace sequence, it can be used to create a custom string. -The _args_ is a list of arguments, defined when the helper function was -registered. - -RETURN VALUE ------------- -The _tep_register_print_function()_ function returns 0 in case of success. -In case of an error, TEP_ERRNO_... code is returned. - -The _tep_unregister_print_function()_ returns 0 in case of success, or -1 in -case of an error. - -EXAMPLE -------- -Some events have internal functions calls, that appear in the print format -output. For example "tracefs/events/i915/g4x_wm/format" has: -[source,c] --- -print fmt: "pipe %c, frame=%u, scanline=%u, wm %d/%d/%d, sr %s/%d/%d/%d, hpll %s/%d/%d/%d, fbc %s", - ((REC->pipe) + 'A'), REC->frame, REC->scanline, REC->primary, - REC->sprite, REC->cursor, yesno(REC->cxsr), REC->sr_plane, - REC->sr_cursor, REC->sr_fbc, yesno(REC->hpll), REC->hpll_plane, - REC->hpll_cursor, REC->hpll_fbc, yesno(REC->fbc) --- -Notice the call to function _yesno()_ in the print arguments. In the kernel -context, this function has the following implementation: -[source,c] --- -static const char *yesno(int x) -{ - static const char *yes = "yes"; - static const char *no = "no"; - - return x ? yes : no; -} --- -The user space event parser has no idea how to handle this _yesno()_ function. -The _tep_register_print_function()_ API can be used to register a user space -helper function, mapped to the kernel's _yesno()_: -[source,c] --- -#include -#include -... -struct tep_handle *tep = tep_alloc(); -... -static const char *yes_no_helper(int x) -{ - return x ? "yes" : "no"; -} -... - if ( tep_register_print_function(tep, - yes_no_helper, - TEP_FUNC_ARG_STRING, - "yesno", - TEP_FUNC_ARG_INT, - TEP_FUNC_ARG_VOID) != 0) { - /* Failed to register yes_no_helper function */ - } - -/* - Now, when the event parser encounters this yesno() function, it will know - how to handle it. -*/ -... - if (tep_unregister_print_function(tep, yes_no_helper, "yesno") != 0) { - /* Failed to unregister yes_no_helper function */ - } --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*trace-seq.h* - Header file to include in order to have access to trace sequences - related APIs. Trace sequences are used to allow a function to call - several other functions to create a string of data to use. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-set_flag.txt b/tools/lib/traceevent/Documentation/libtraceevent-set_flag.txt deleted file mode 100644 index b0599780b9a6..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-set_flag.txt +++ /dev/null @@ -1,104 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_set_flag, tep_clear_flag, tep_test_flag - -Manage flags of trace event parser context. - -SYNOPSIS --------- -[verse] --- -*#include * - -enum *tep_flag* { - _TEP_NSEC_OUTPUT_, - _TEP_DISABLE_SYS_PLUGINS_, - _TEP_DISABLE_PLUGINS_ -}; -void *tep_set_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_); -void *tep_clear_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_); -bool *tep_test_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_); --- - -DESCRIPTION ------------ -Trace event parser context flags are defined in *enum tep_flag*: -[verse] --- -_TEP_NSEC_OUTPUT_ - print event's timestamp in nano seconds, instead of micro seconds. -_TEP_DISABLE_SYS_PLUGINS_ - disable plugins, located in system's plugin - directory. This directory is defined at library compile - time, and usually depends on library installation - prefix: (install_preffix)/lib/traceevent/plugins -_TEP_DISABLE_PLUGINS_ - disable all library plugins: - - in system's plugin directory - - in directory, defined by the environment variable _TRACEEVENT_PLUGIN_DIR_ - - in user's home directory, _~/.traceevent/plugins_ --- -Note: plugin related flags must me set before calling _tep_load_plugins()_ API. - -The _tep_set_flag()_ function sets _flag_ to _tep_ context. - -The _tep_clear_flag()_ function clears _flag_ from _tep_ context. - -The _tep_test_flag()_ function tests if _flag_ is set to _tep_ context. - -RETURN VALUE ------------- -_tep_test_flag()_ function returns true if _flag_ is set, false otherwise. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -/* Print timestamps in nanoseconds */ -tep_set_flag(tep, TEP_NSEC_OUTPUT); -... -if (tep_test_flag(tep, TEP_NSEC_OUTPUT)) { - /* print timestamps in nanoseconds */ -} else { - /* print timestamps in microseconds */ -} -... -/* Print timestamps in microseconds */ -tep_clear_flag(tep, TEP_NSEC_OUTPUT); -... --- -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-strerror.txt b/tools/lib/traceevent/Documentation/libtraceevent-strerror.txt deleted file mode 100644 index ee4062a00c9f..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-strerror.txt +++ /dev/null @@ -1,85 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -tep_strerror - Returns a string describing regular errno and tep error number. - -SYNOPSIS --------- -[verse] --- -*#include * - -int *tep_strerror*(struct tep_handle pass:[*]_tep_, enum tep_errno _errnum_, char pass:[*]_buf_, size_t _buflen_); - --- -DESCRIPTION ------------ -The _tep_strerror()_ function converts tep error number into a human -readable string. -The _tep_ argument is trace event parser context. The _errnum_ is a regular -errno, defined in errno.h, or a tep error number. The string, describing this -error number is copied in the _buf_ argument. The _buflen_ argument is -the size of the _buf_. - -It as a thread safe wrapper around strerror_r(). The library function has two -different behaviors - POSIX and GNU specific. The _tep_strerror()_ API always -behaves as the POSIX version - the error string is copied in the user supplied -buffer. - -RETURN VALUE ------------- -The _tep_strerror()_ function returns 0, if a valid _errnum_ is passed and the -string is copied into _buf_. If _errnum_ is not a valid error number, --1 is returned and _buf_ is not modified. - -EXAMPLE -------- -[source,c] --- -#include -... -struct tep_handle *tep = tep_alloc(); -... -char buf[32]; -char *pool = calloc(1, 128); -if (tep == NULL) { - tep_strerror(tep, TEP_ERRNO__MEM_ALLOC_FAILED, buf, 32); - printf ("The pool is not initialized, %s", buf); -} -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent-tseq.txt b/tools/lib/traceevent/Documentation/libtraceevent-tseq.txt deleted file mode 100644 index 8ac6aa174e12..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent-tseq.txt +++ /dev/null @@ -1,158 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -trace_seq_init, trace_seq_destroy, trace_seq_reset, trace_seq_terminate, -trace_seq_putc, trace_seq_puts, trace_seq_printf, trace_seq_vprintf, -trace_seq_do_fprintf, trace_seq_do_printf - -Initialize / destroy a trace sequence. - -SYNOPSIS --------- -[verse] --- -*#include * -*#include * - -void *trace_seq_init*(struct trace_seq pass:[*]_s_); -void *trace_seq_destroy*(struct trace_seq pass:[*]_s_); -void *trace_seq_reset*(struct trace_seq pass:[*]_s_); -void *trace_seq_terminate*(struct trace_seq pass:[*]_s_); -int *trace_seq_putc*(struct trace_seq pass:[*]_s_, unsigned char _c_); -int *trace_seq_puts*(struct trace_seq pass:[*]_s_, const char pass:[*]_str_); -int *trace_seq_printf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, _..._); -int *trace_seq_vprintf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, va_list _args_); -int *trace_seq_do_printf*(struct trace_seq pass:[*]_s_); -int *trace_seq_do_fprintf*(struct trace_seq pass:[*]_s_, FILE pass:[*]_fp_); --- - -DESCRIPTION ------------ -Trace sequences are used to allow a function to call several other functions -to create a string of data to use. - -The _trace_seq_init()_ function initializes the trace sequence _s_. - -The _trace_seq_destroy()_ function destroys the trace sequence _s_ and frees -all its resources that it had used. - -The _trace_seq_reset()_ function re-initializes the trace sequence _s_. All -characters already written in _s_ will be deleted. - -The _trace_seq_terminate()_ function terminates the trace sequence _s_. It puts -the null character pass:['\0'] at the end of the buffer. - -The _trace_seq_putc()_ function puts a single character _c_ in the trace -sequence _s_. - -The _trace_seq_puts()_ function puts a NULL terminated string _str_ in the -trace sequence _s_. - -The _trace_seq_printf()_ function puts a formated string _fmt _with -variable arguments _..._ in the trace sequence _s_. - -The _trace_seq_vprintf()_ function puts a formated string _fmt _with -list of arguments _args_ in the trace sequence _s_. - -The _trace_seq_do_printf()_ function prints the buffer of trace sequence _s_ to -the standard output stdout. - -The _trace_seq_do_fprintf()_ function prints the buffer of trace sequence _s_ -to the given file _fp_. - -RETURN VALUE ------------- -Both _trace_seq_putc()_ and _trace_seq_puts()_ functions return the number of -characters put in the trace sequence, or 0 in case of an error - -Both _trace_seq_printf()_ and _trace_seq_vprintf()_ functions return 0 if the -trace oversizes the buffer's free space, the number of characters printed, or -a negative value in case of an error. - -Both _trace_seq_do_printf()_ and _trace_seq_do_fprintf()_ functions return the -number of printed characters, or -1 in case of an error. - -EXAMPLE -------- -[source,c] --- -#include -#include -... -struct trace_seq seq; -trace_seq_init(&seq); -... -void foo_seq_print(struct trace_seq *tseq, char *format, ...) -{ - va_list ap; - va_start(ap, format); - if (trace_seq_vprintf(tseq, format, ap) <= 0) { - /* Failed to print in the trace sequence */ - } - va_end(ap); -} - -trace_seq_reset(&seq); - -char *str = " MAN page example"; -if (trace_seq_puts(&seq, str) != strlen(str)) { - /* Failed to put str in the trace sequence */ -} -if (trace_seq_putc(&seq, ':') != 1) { - /* Failed to put ':' in the trace sequence */ -} -if (trace_seq_printf(&seq, " trace sequence: %d", 1) <= 0) { - /* Failed to print in the trace sequence */ -} -foo_seq_print( &seq, " %d\n", 2); - -trace_seq_terminate(&seq); -... - -if (trace_seq_do_printf(&seq) < 0 ) { - /* Failed to print the sequence buffer to the standard output */ -} -FILE *fp = fopen("trace.txt", "w"); -if (trace_seq_do_fprintf(&seq, fp) < 0 ) [ - /* Failed to print the sequence buffer to the trace.txt file */ -} - -trace_seq_destroy(&seq); -... --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*trace-seq.h* - Header file to include in order to have access to trace sequences related APIs. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_libtraceevent(3)_, _trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/libtraceevent.txt b/tools/lib/traceevent/Documentation/libtraceevent.txt deleted file mode 100644 index d530a7ce8fb2..000000000000 --- a/tools/lib/traceevent/Documentation/libtraceevent.txt +++ /dev/null @@ -1,192 +0,0 @@ -libtraceevent(3) -================ - -NAME ----- -libtraceevent - Linux kernel trace event library - -SYNOPSIS --------- -[verse] --- -*#include * - -Management of tep handler data structure and access of its members: - struct tep_handle pass:[*]*tep_alloc*(void); - void *tep_free*(struct tep_handle pass:[*]_tep_); - void *tep_ref*(struct tep_handle pass:[*]_tep_); - void *tep_unref*(struct tep_handle pass:[*]_tep_); - int *tep_get_ref*(struct tep_handle pass:[*]_tep_); - void *tep_set_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_); - void *tep_clear_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flag_); - bool *tep_test_flag*(struct tep_handle pass:[*]_tep_, enum tep_flag _flags_); - int *tep_get_cpus*(struct tep_handle pass:[*]_tep_); - void *tep_set_cpus*(struct tep_handle pass:[*]_tep_, int _cpus_); - int *tep_get_long_size*(strucqt tep_handle pass:[*]_tep_); - void *tep_set_long_size*(struct tep_handle pass:[*]_tep_, int _long_size_); - int *tep_get_page_size*(struct tep_handle pass:[*]_tep_); - void *tep_set_page_size*(struct tep_handle pass:[*]_tep_, int _page_size_); - int *tep_get_header_page_size*(struct tep_handle pass:[*]_tep_); - int *tep_get_header_timestamp_size*(struct tep_handle pass:[*]_tep_); - bool *tep_is_old_format*(struct tep_handle pass:[*]_tep_); - int *tep_strerror*(struct tep_handle pass:[*]_tep_, enum tep_errno _errnum_, char pass:[*]_buf_, size_t _buflen_); - -Register / unregister APIs: - int *tep_register_function*(struct tep_handle pass:[*]_tep_, char pass:[*]_name_, unsigned long long _addr_, char pass:[*]_mod_); - int *tep_register_event_handler*(struct tep_handle pass:[*]_tep_, int _id_, const char pass:[*]_sys_name_, const char pass:[*]_event_name_, tep_event_handler_func _func_, void pass:[*]_context_); - int *tep_unregister_event_handler*(struct tep_handle pass:[*]tep, int id, const char pass:[*]sys_name, const char pass:[*]event_name, tep_event_handler_func func, void pass:[*]_context_); - int *tep_register_print_string*(struct tep_handle pass:[*]_tep_, const char pass:[*]_fmt_, unsigned long long _addr_); - int *tep_register_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, enum tep_func_arg_type _ret_type_, char pass:[*]_name_, _..._); - int *tep_unregister_print_function*(struct tep_handle pass:[*]_tep_, tep_func_handler _func_, char pass:[*]_name_); - -Plugins management: - struct tep_plugin_list pass:[*]*tep_load_plugins*(struct tep_handle pass:[*]_tep_); - void *tep_unload_plugins*(struct tep_plugin_list pass:[*]_plugin_list_, struct tep_handle pass:[*]_tep_); - char pass:[*]pass:[*]*tep_plugin_list_options*(void); - void *tep_plugin_free_options_list*(char pass:[*]pass:[*]_list_); - int *tep_plugin_add_options*(const char pass:[*]_name_, struct tep_plugin_option pass:[*]_options_); - void *tep_plugin_remove_options*(struct tep_plugin_option pass:[*]_options_); - void *tep_print_plugins*(struct trace_seq pass:[*]_s_, const char pass:[*]_prefix_, const char pass:[*]_suffix_, const struct tep_plugin_list pass:[*]_list_); - -Event related APIs: - struct tep_event pass:[*]*tep_get_event*(struct tep_handle pass:[*]_tep_, int _index_); - struct tep_event pass:[*]*tep_get_first_event*(struct tep_handle pass:[*]_tep_); - int *tep_get_events_count*(struct tep_handle pass:[*]_tep_); - struct tep_event pass:[*]pass:[*]*tep_list_events*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_); - struct tep_event pass:[*]pass:[*]*tep_list_events_copy*(struct tep_handle pass:[*]_tep_, enum tep_event_sort_type _sort_type_); - void *tep_print_event*(struct tep_handle pass:[*]_tep_, struct trace_seq pass:[*]_s_, struct tep_record pass:[*]_record_, const char pass:[*]_fmt_, _..._); - -Event finding: - struct tep_event pass:[*]*tep_find_event*(struct tep_handle pass:[*]_tep_, int _id_); - struct tep_event pass:[*]*tep_find_event_by_name*(struct tep_handle pass:[*]_tep_, const char pass:[*]_sys_, const char pass:[*]_name_); - struct tep_event pass:[*]*tep_find_event_by_record*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_record_); - -Parsing of event files: - int *tep_parse_header_page*(struct tep_handle pass:[*]_tep_, char pass:[*]_buf_, unsigned long _size_, int _long_size_); - enum tep_errno *tep_parse_event*(struct tep_handle pass:[*]_tep_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_); - enum tep_errno *tep_parse_format*(struct tep_handle pass:[*]_tep_, struct tep_event pass:[*]pass:[*]_eventp_, const char pass:[*]_buf_, unsigned long _size_, const char pass:[*]_sys_); - -APIs related to fields from event's format files: - struct tep_format_field pass:[*]pass:[*]*tep_event_common_fields*(struct tep_event pass:[*]_event_); - struct tep_format_field pass:[*]pass:[*]*tep_event_fields*(struct tep_event pass:[*]_event_); - void pass:[*]*tep_get_field_raw*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int pass:[*]_len_, int _err_); - int *tep_get_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); - int *tep_get_common_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); - int *tep_get_any_field_val*(struct trace_seq pass:[*]_s_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, unsigned long long pass:[*]_val_, int _err_); - int *tep_read_number_field*(struct tep_format_field pass:[*]_field_, const void pass:[*]_data_, unsigned long long pass:[*]_value_); - -Event fields printing: - void *tep_print_field*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, struct tep_format_field pass:[*]_field_); - void *tep_print_fields*(struct trace_seq pass:[*]_s_, void pass:[*]_data_, int _size_, struct tep_event pass:[*]_event_); - int *tep_print_num_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_); - int *tep_print_func_field*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, struct tep_event pass:[*]_event_, const char pass:[*]_name_, struct tep_record pass:[*]_record_, int _err_); - -Event fields finding: - struct tep_format_field pass:[*]*tep_find_common_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_); - struct tep_format_field pass:[*]*tep_find_field*(struct tep_event_ormat pass:[*]_event_, const char pass:[*]_name_); - struct tep_format_field pass:[*]*tep_find_any_field*(struct tep_event pass:[*]_event_, const char pass:[*]_name_); - -Functions resolver: - int *tep_set_function_resolver*(struct tep_handle pass:[*]_tep_, tep_func_resolver_t pass:[*]_func_, void pass:[*]_priv_); - void *tep_reset_function_resolver*(struct tep_handle pass:[*]_tep_); - const char pass:[*]*tep_find_function*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_); - unsigned long long *tep_find_function_address*(struct tep_handle pass:[*]_tep_, unsigned long long _addr_); - -Filter management: - struct tep_event_filter pass:[*]*tep_filter_alloc*(struct tep_handle pass:[*]_tep_); - enum tep_errno *tep_filter_add_filter_str*(struct tep_event_filter pass:[*]_filter_, const char pass:[*]_filter_str_); - enum tep_errno *tep_filter_match*(struct tep_event_filter pass:[*]_filter_, struct tep_record pass:[*]_record_); - int *tep_filter_strerror*(struct tep_event_filter pass:[*]_filter_, enum tep_errno _err_, char pass:[*]buf, size_t _buflen_); - int *tep_event_filtered*(struct tep_event_filter pass:[*]_filter_, int _event_id_); - void *tep_filter_reset*(struct tep_event_filter pass:[*]_filter_); - void *tep_filter_free*(struct tep_event_filter pass:[*]_filter_); - char pass:[*]*tep_filter_make_string*(struct tep_event_filter pass:[*]_filter_, int _event_id_); - int *tep_filter_remove_event*(struct tep_event_filter pass:[*]_filter_, int _event_id_); - int *tep_filter_copy*(struct tep_event_filter pass:[*]_dest_, struct tep_event_filter pass:[*]_source_); - int *tep_filter_compare*(struct tep_event_filter pass:[*]_filter1_, struct tep_event_filter pass:[*]_filter2_); - -Parsing various data from the records: - int *tep_data_type*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); - int *tep_data_pid*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); - int *tep_data_preempt_count*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); - int *tep_data_flags*(struct tep_handle pass:[*]_tep_, struct tep_record pass:[*]_rec_); - -Command and task related APIs: - const char pass:[*]*tep_data_comm_from_pid*(struct tep_handle pass:[*]_tep_, int _pid_); - struct cmdline pass:[*]*tep_data_pid_from_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, struct cmdline pass:[*]_next_); - int *tep_register_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_); - int *tep_override_comm*(struct tep_handle pass:[*]_tep_, const char pass:[*]_comm_, int _pid_); - bool *tep_is_pid_registered*(struct tep_handle pass:[*]_tep_, int _pid_); - int *tep_cmdline_pid*(struct tep_handle pass:[*]_tep_, struct cmdline pass:[*]_cmdline_); - -Endian related APIs: - int *tep_is_bigendian*(void); - unsigned long long *tep_read_number*(struct tep_handle pass:[*]_tep_, const void pass:[*]_ptr_, int _size_); - bool *tep_is_file_bigendian*(struct tep_handle pass:[*]_tep_); - void *tep_set_file_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_); - bool *tep_is_local_bigendian*(struct tep_handle pass:[*]_tep_); - void *tep_set_local_bigendian*(struct tep_handle pass:[*]_tep_, enum tep_endian _endian_); - -Trace sequences: -*#include * - void *trace_seq_init*(struct trace_seq pass:[*]_s_); - void *trace_seq_reset*(struct trace_seq pass:[*]_s_); - void *trace_seq_destroy*(struct trace_seq pass:[*]_s_); - int *trace_seq_printf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, ...); - int *trace_seq_vprintf*(struct trace_seq pass:[*]_s_, const char pass:[*]_fmt_, va_list _args_); - int *trace_seq_puts*(struct trace_seq pass:[*]_s_, const char pass:[*]_str_); - int *trace_seq_putc*(struct trace_seq pass:[*]_s_, unsigned char _c_); - void *trace_seq_terminate*(struct trace_seq pass:[*]_s_); - int *trace_seq_do_fprintf*(struct trace_seq pass:[*]_s_, FILE pass:[*]_fp_); - int *trace_seq_do_printf*(struct trace_seq pass:[*]_s_); --- - -DESCRIPTION ------------ -The libtraceevent(3) library provides APIs to access kernel tracepoint events, -located in the tracefs file system under the events directory. - -ENVIRONMENT ------------ -[verse] --- -TRACEEVENT_PLUGIN_DIR - Additional plugin directory. All shared object files, located in this directory will be loaded as traceevent plugins. --- - -FILES ------ -[verse] --- -*event-parse.h* - Header file to include in order to have access to the library APIs. -*trace-seq.h* - Header file to include in order to have access to trace sequences related APIs. - Trace sequences are used to allow a function to call several other functions - to create a string of data to use. -*-ltraceevent* - Linker switch to add when building a program that uses the library. --- - -SEE ALSO --------- -_trace-cmd(1)_ - -AUTHOR ------- -[verse] --- -*Steven Rostedt* , author of *libtraceevent*. -*Tzvetomir Stoyanov* , author of this man page. --- -REPORTING BUGS --------------- -Report bugs to - -LICENSE -------- -libtraceevent is Free Software licensed under the GNU LGPL 2.1 - -RESOURCES ---------- -https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git diff --git a/tools/lib/traceevent/Documentation/manpage-1.72.xsl b/tools/lib/traceevent/Documentation/manpage-1.72.xsl deleted file mode 100644 index b4d315cb8c47..000000000000 --- a/tools/lib/traceevent/Documentation/manpage-1.72.xsl +++ /dev/null @@ -1,14 +0,0 @@ - - - - - - -▓ -⌂ - - diff --git a/tools/lib/traceevent/Documentation/manpage-base.xsl b/tools/lib/traceevent/Documentation/manpage-base.xsl deleted file mode 100644 index a264fa616093..000000000000 --- a/tools/lib/traceevent/Documentation/manpage-base.xsl +++ /dev/null @@ -1,35 +0,0 @@ - - - - - - - - - - - - - - sp - - - - - - - - br - - - diff --git a/tools/lib/traceevent/Documentation/manpage-bold-literal.xsl b/tools/lib/traceevent/Documentation/manpage-bold-literal.xsl deleted file mode 100644 index 608eb5df6281..000000000000 --- a/tools/lib/traceevent/Documentation/manpage-bold-literal.xsl +++ /dev/null @@ -1,17 +0,0 @@ - - - - - - - fB - - - fR - - - diff --git a/tools/lib/traceevent/Documentation/manpage-normal.xsl b/tools/lib/traceevent/Documentation/manpage-normal.xsl deleted file mode 100644 index a48f5b11f3dc..000000000000 --- a/tools/lib/traceevent/Documentation/manpage-normal.xsl +++ /dev/null @@ -1,13 +0,0 @@ - - - - - - -\ -. - - diff --git a/tools/lib/traceevent/Documentation/manpage-suppress-sp.xsl b/tools/lib/traceevent/Documentation/manpage-suppress-sp.xsl deleted file mode 100644 index a63c7632a87d..000000000000 --- a/tools/lib/traceevent/Documentation/manpage-suppress-sp.xsl +++ /dev/null @@ -1,21 +0,0 @@ - - - - - - - - - - - - - - - diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile deleted file mode 100644 index 98dfd4badea3..000000000000 --- a/tools/lib/traceevent/Makefile +++ /dev/null @@ -1,300 +0,0 @@ -# SPDX-License-Identifier: GPL-2.0 -# trace-cmd version -EP_VERSION = 1 -EP_PATCHLEVEL = 1 -EP_EXTRAVERSION = 0 - -# file format version -FILE_VERSION = 6 - -MAKEFLAGS += --no-print-directory - - -# Makefiles suck: This macro sets a default value of $(2) for the -# variable named by $(1), unless the variable has been set by -# environment or command line. This is necessary for CC and AR -# because make sets default values, so the simpler ?= approach -# won't work as expected. -define allow-override - $(if $(or $(findstring environment,$(origin $(1))),\ - $(findstring command line,$(origin $(1)))),,\ - $(eval $(1) = $(2))) -endef - -# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix. -$(call allow-override,CC,$(CROSS_COMPILE)gcc) -$(call allow-override,AR,$(CROSS_COMPILE)ar) -$(call allow-override,NM,$(CROSS_COMPILE)nm) -$(call allow-override,PKG_CONFIG,pkg-config) - -EXT = -std=gnu99 -INSTALL = install - -# Use DESTDIR for installing into a different root directory. -# This is useful for building a package. The program will be -# installed in this directory as if it was the root directory. -# Then the build tool can move it later. -DESTDIR ?= -DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' - -LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1) -ifeq ($(LP64), 1) - libdir_relative_temp = lib64 -else - libdir_relative_temp = lib -endif - -libdir_relative ?= $(libdir_relative_temp) -prefix ?= /usr/local -libdir = $(prefix)/$(libdir_relative) -man_dir = $(prefix)/share/man -man_dir_SQ = '$(subst ','\'',$(man_dir))' -pkgconfig_dir ?= $(word 1,$(shell $(PKG_CONFIG) \ - --variable pc_path pkg-config | tr ":" " ")) -includedir_relative = traceevent -includedir = $(prefix)/include/$(includedir_relative) -includedir_SQ = '$(subst ','\'',$(includedir))' - -export man_dir man_dir_SQ INSTALL -export DESTDIR DESTDIR_SQ -export EVENT_PARSE_VERSION - -include ../../scripts/Makefile.include - -# copy a bit from Linux kbuild - -ifeq ("$(origin V)", "command line") - VERBOSE = $(V) -endif -ifndef VERBOSE - VERBOSE = 0 -endif - -ifeq ($(srctree),) -srctree := $(patsubst %/,%,$(dir $(CURDIR))) -srctree := $(patsubst %/,%,$(dir $(srctree))) -srctree := $(patsubst %/,%,$(dir $(srctree))) -#$(info Determined 'srctree' to be $(srctree)) -endif - -export prefix libdir src obj - -# Shell quotes -libdir_SQ = $(subst ','\'',$(libdir)) -libdir_relative_SQ = $(subst ','\'',$(libdir_relative)) - -CONFIG_INCLUDES = -CONFIG_LIBS = -CONFIG_FLAGS = - -VERSION = $(EP_VERSION) -PATCHLEVEL = $(EP_PATCHLEVEL) -EXTRAVERSION = $(EP_EXTRAVERSION) - -OBJ = $@ -N = - -EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION) - -LIB_TARGET = libtraceevent.a libtraceevent.so.$(EVENT_PARSE_VERSION) -LIB_INSTALL = libtraceevent.a libtraceevent.so* -LIB_INSTALL := $(addprefix $(OUTPUT),$(LIB_INSTALL)) - -INCLUDES = -I. -I $(srctree)/tools/include $(CONFIG_INCLUDES) - -# Set compile option CFLAGS -ifdef EXTRA_CFLAGS - CFLAGS := $(EXTRA_CFLAGS) -else - CFLAGS := -g -Wall -endif - -# Append required CFLAGS -override CFLAGS += -fPIC -override CFLAGS += $(CONFIG_FLAGS) $(INCLUDES) $(PLUGIN_DIR_SQ) -override CFLAGS += $(udis86-flags) -D_GNU_SOURCE - -ifeq ($(VERBOSE),1) - Q = -else - Q = @ -endif - -# Disable command line variables (CFLAGS) override from top -# level Makefile (perf), otherwise build Makefile will get -# the same command line setup. -MAKEOVERRIDES= - -export srctree OUTPUT CC LD CFLAGS V -build := -f $(srctree)/tools/build/Makefile.build dir=. obj - -TE_IN := $(OUTPUT)libtraceevent-in.o -LIB_TARGET := $(addprefix $(OUTPUT),$(LIB_TARGET)) - -CMD_TARGETS = $(LIB_TARGET) - -TARGETS = $(CMD_TARGETS) - -all: all_cmd plugins - -all_cmd: $(CMD_TARGETS) - -$(TE_IN): force - $(Q)$(MAKE) $(build)=libtraceevent - -$(OUTPUT)libtraceevent.so.$(EVENT_PARSE_VERSION): $(TE_IN) - $(QUIET_LINK)$(CC) --shared $(LDFLAGS) $^ -Wl,-soname,libtraceevent.so.$(EP_VERSION) -o $@ - @ln -sf $(@F) $(OUTPUT)libtraceevent.so - @ln -sf $(@F) $(OUTPUT)libtraceevent.so.$(EP_VERSION) - -$(OUTPUT)libtraceevent.a: $(TE_IN) - $(QUIET_LINK)$(RM) $@; $(AR) rcs $@ $^ - -$(OUTPUT)%.so: $(OUTPUT)%-in.o - $(QUIET_LINK)$(CC) $(CFLAGS) -shared $(LDFLAGS) -nostartfiles -o $@ $^ - -define make_version.h - (echo '/* This file is automatically generated. Do not modify. */'; \ - echo \#define VERSION_CODE $(shell \ - expr $(VERSION) \* 256 + $(PATCHLEVEL)); \ - echo '#define EXTRAVERSION ' $(EXTRAVERSION); \ - echo '#define VERSION_STRING "'$(VERSION).$(PATCHLEVEL).$(EXTRAVERSION)'"'; \ - echo '#define FILE_VERSION '$(FILE_VERSION); \ - ) > $1 -endef - -define update_version.h - ($(call make_version.h, $@.tmp); \ - if [ -r $@ ] && cmp -s $@ $@.tmp; then \ - rm -f $@.tmp; \ - else \ - echo ' UPDATE $@'; \ - mv -f $@.tmp $@; \ - fi); -endef - -ep_version.h: force - $(Q)$(N)$(call update_version.h) - -VERSION_FILES = ep_version.h - -define update_dir - (echo $1 > $@.tmp; \ - if [ -r $@ ] && cmp -s $@ $@.tmp; then \ - rm -f $@.tmp; \ - else \ - echo ' UPDATE $@'; \ - mv -f $@.tmp $@; \ - fi); -endef - -tags: force - $(RM) tags - find . -name '*.[ch]' | xargs ctags --extra=+f --c-kinds=+px \ - --regex-c++='/_PE\(([^,)]*).*/TEP_ERRNO__\1/' - -TAGS: force - $(RM) TAGS - find . -name '*.[ch]' | xargs etags \ - --regex='/_PE(\([^,)]*\).*/TEP_ERRNO__\1/' - -define do_install_mkdir - if [ ! -d '$(DESTDIR_SQ)$1' ]; then \ - $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$1'; \ - fi -endef - -define do_install - $(call do_install_mkdir,$2); \ - $(INSTALL) $(if $3,-m $3,) $1 '$(DESTDIR_SQ)$2' -endef - -PKG_CONFIG_SOURCE_FILE = libtraceevent.pc -PKG_CONFIG_FILE := $(addprefix $(OUTPUT),$(PKG_CONFIG_SOURCE_FILE)) -define do_install_pkgconfig_file - if [ -n "${pkgconfig_dir}" ]; then \ - cp -f ${PKG_CONFIG_SOURCE_FILE}.template ${PKG_CONFIG_FILE}; \ - sed -i "s|INSTALL_PREFIX|${1}|g" ${PKG_CONFIG_FILE}; \ - sed -i "s|LIB_VERSION|${EVENT_PARSE_VERSION}|g" ${PKG_CONFIG_FILE}; \ - sed -i "s|LIB_DIR|${libdir}|g" ${PKG_CONFIG_FILE}; \ - sed -i "s|HEADER_DIR|$(includedir)|g" ${PKG_CONFIG_FILE}; \ - $(call do_install,$(PKG_CONFIG_FILE),$(pkgconfig_dir),644); \ - else \ - (echo Failed to locate pkg-config directory) 1>&2; \ - fi -endef - -install_lib: all_cmd install_plugins install_headers install_pkgconfig - $(call QUIET_INSTALL, $(LIB_TARGET)) \ - $(call do_install_mkdir,$(libdir_SQ)); \ - cp -fpR $(LIB_INSTALL) $(DESTDIR)$(libdir_SQ) - -install_pkgconfig: - $(call QUIET_INSTALL, $(PKG_CONFIG_FILE)) \ - $(call do_install_pkgconfig_file,$(prefix)) - -install_headers: - $(call QUIET_INSTALL, traceevent_headers) \ - $(call do_install,event-parse.h,$(includedir_SQ),644); \ - $(call do_install,event-utils.h,$(includedir_SQ),644); \ - $(call do_install,trace-seq.h,$(includedir_SQ),644); \ - $(call do_install,kbuffer.h,$(includedir_SQ),644); - -install: install_lib - -clean: clean_plugins - $(call QUIET_CLEAN, libtraceevent) \ - $(RM) *.o *~ $(TARGETS) *.a *.so $(VERSION_FILES) .*.d .*.cmd; \ - $(RM) TRACEEVENT-CFLAGS tags TAGS; \ - $(RM) $(PKG_CONFIG_FILE) - -PHONY += doc -doc: - $(call descend,Documentation) - -PHONY += doc-clean -doc-clean: - $(call descend,Documentation,clean) - -PHONY += doc-install -doc-install: - $(call descend,Documentation,install) - -PHONY += doc-uninstall -doc-uninstall: - $(call descend,Documentation,uninstall) - -PHONY += help -help: - @echo 'Possible targets:' - @echo'' - @echo ' all - default, compile the library and the'\ - 'plugins' - @echo ' plugins - compile the plugins' - @echo ' install - install the library, the plugins,'\ - 'the header and pkgconfig files' - @echo ' clean - clean the library and the plugins object files' - @echo ' doc - compile the documentation files - man'\ - 'and html pages, in the Documentation directory' - @echo ' doc-clean - clean the documentation files' - @echo ' doc-install - install the man pages' - @echo ' doc-uninstall - uninstall the man pages' - @echo'' - -PHONY += plugins -plugins: - $(call descend,plugins) - -PHONY += install_plugins -install_plugins: - $(call descend,plugins,install) - -PHONY += clean_plugins -clean_plugins: - $(call descend,plugins,clean) - -force: - -# Declare the contents of the .PHONY variable as phony. We keep that -# information in a variable so we can use it in if_changed and friends. -.PHONY: $(PHONY) diff --git a/tools/lib/traceevent/event-parse-api.c b/tools/lib/traceevent/event-parse-api.c deleted file mode 100644 index f8361e45d446..000000000000 --- a/tools/lib/traceevent/event-parse-api.c +++ /dev/null @@ -1,333 +0,0 @@ -// SPDX-License-Identifier: LGPL-2.1 -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt - * - */ - -#include "event-parse.h" -#include "event-parse-local.h" -#include "event-utils.h" - -/** - * tep_get_event - returns the event with the given index - * @tep: a handle to the tep_handle - * @index: index of the requested event, in the range 0 .. nr_events - * - * This returns pointer to the element of the events array with the given index - * If @tep is NULL, or @index is not in the range 0 .. nr_events, NULL is returned. - */ -struct tep_event *tep_get_event(struct tep_handle *tep, int index) -{ - if (tep && tep->events && index < tep->nr_events) - return tep->events[index]; - - return NULL; -} - -/** - * tep_get_first_event - returns the first event in the events array - * @tep: a handle to the tep_handle - * - * This returns pointer to the first element of the events array - * If @tep is NULL, NULL is returned. - */ -struct tep_event *tep_get_first_event(struct tep_handle *tep) -{ - return tep_get_event(tep, 0); -} - -/** - * tep_get_events_count - get the number of defined events - * @tep: a handle to the tep_handle - * - * This returns number of elements in event array - * If @tep is NULL, 0 is returned. - */ -int tep_get_events_count(struct tep_handle *tep) -{ - if (tep) - return tep->nr_events; - return 0; -} - -/** - * tep_set_flag - set event parser flag - * @tep: a handle to the tep_handle - * @flag: flag, or combination of flags to be set - * can be any combination from enum tep_flag - * - * This sets a flag or combination of flags from enum tep_flag - */ -void tep_set_flag(struct tep_handle *tep, int flag) -{ - if (tep) - tep->flags |= flag; -} - -/** - * tep_clear_flag - clear event parser flag - * @tep: a handle to the tep_handle - * @flag: flag to be cleared - * - * This clears a tep flag - */ -void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag) -{ - if (tep) - tep->flags &= ~flag; -} - -/** - * tep_test_flag - check the state of event parser flag - * @tep: a handle to the tep_handle - * @flag: flag to be checked - * - * This returns the state of the requested tep flag. - * Returns: true if the flag is set, false otherwise. - */ -bool tep_test_flag(struct tep_handle *tep, enum tep_flag flag) -{ - if (tep) - return tep->flags & flag; - return false; -} - -__hidden unsigned short data2host2(struct tep_handle *tep, unsigned short data) -{ - unsigned short swap; - - if (!tep || tep->host_bigendian == tep->file_bigendian) - return data; - - swap = ((data & 0xffULL) << 8) | - ((data & (0xffULL << 8)) >> 8); - - return swap; -} - -__hidden unsigned int data2host4(struct tep_handle *tep, unsigned int data) -{ - unsigned int swap; - - if (!tep || tep->host_bigendian == tep->file_bigendian) - return data; - - swap = ((data & 0xffULL) << 24) | - ((data & (0xffULL << 8)) << 8) | - ((data & (0xffULL << 16)) >> 8) | - ((data & (0xffULL << 24)) >> 24); - - return swap; -} - -__hidden unsigned long long -data2host8(struct tep_handle *tep, unsigned long long data) -{ - unsigned long long swap; - - if (!tep || tep->host_bigendian == tep->file_bigendian) - return data; - - swap = ((data & 0xffULL) << 56) | - ((data & (0xffULL << 8)) << 40) | - ((data & (0xffULL << 16)) << 24) | - ((data & (0xffULL << 24)) << 8) | - ((data & (0xffULL << 32)) >> 8) | - ((data & (0xffULL << 40)) >> 24) | - ((data & (0xffULL << 48)) >> 40) | - ((data & (0xffULL << 56)) >> 56); - - return swap; -} - -/** - * tep_get_header_page_size - get size of the header page - * @tep: a handle to the tep_handle - * - * This returns size of the header page - * If @tep is NULL, 0 is returned. - */ -int tep_get_header_page_size(struct tep_handle *tep) -{ - if (tep) - return tep->header_page_size_size; - return 0; -} - -/** - * tep_get_header_timestamp_size - get size of the timestamp in the header page - * @tep: a handle to the tep_handle - * - * This returns size of the timestamp in the header page - * If @tep is NULL, 0 is returned. - */ -int tep_get_header_timestamp_size(struct tep_handle *tep) -{ - if (tep) - return tep->header_page_ts_size; - return 0; -} - -/** - * tep_get_cpus - get the number of CPUs - * @tep: a handle to the tep_handle - * - * This returns the number of CPUs - * If @tep is NULL, 0 is returned. - */ -int tep_get_cpus(struct tep_handle *tep) -{ - if (tep) - return tep->cpus; - return 0; -} - -/** - * tep_set_cpus - set the number of CPUs - * @tep: a handle to the tep_handle - * - * This sets the number of CPUs - */ -void tep_set_cpus(struct tep_handle *tep, int cpus) -{ - if (tep) - tep->cpus = cpus; -} - -/** - * tep_get_long_size - get the size of a long integer on the traced machine - * @tep: a handle to the tep_handle - * - * This returns the size of a long integer on the traced machine - * If @tep is NULL, 0 is returned. - */ -int tep_get_long_size(struct tep_handle *tep) -{ - if (tep) - return tep->long_size; - return 0; -} - -/** - * tep_set_long_size - set the size of a long integer on the traced machine - * @tep: a handle to the tep_handle - * @size: size, in bytes, of a long integer - * - * This sets the size of a long integer on the traced machine - */ -void tep_set_long_size(struct tep_handle *tep, int long_size) -{ - if (tep) - tep->long_size = long_size; -} - -/** - * tep_get_page_size - get the size of a memory page on the traced machine - * @tep: a handle to the tep_handle - * - * This returns the size of a memory page on the traced machine - * If @tep is NULL, 0 is returned. - */ -int tep_get_page_size(struct tep_handle *tep) -{ - if (tep) - return tep->page_size; - return 0; -} - -/** - * tep_set_page_size - set the size of a memory page on the traced machine - * @tep: a handle to the tep_handle - * @_page_size: size of a memory page, in bytes - * - * This sets the size of a memory page on the traced machine - */ -void tep_set_page_size(struct tep_handle *tep, int _page_size) -{ - if (tep) - tep->page_size = _page_size; -} - -/** - * tep_is_file_bigendian - return the endian of the file - * @tep: a handle to the tep_handle - * - * This returns true if the file is in big endian order - * If @tep is NULL, false is returned. - */ -bool tep_is_file_bigendian(struct tep_handle *tep) -{ - if (tep) - return (tep->file_bigendian == TEP_BIG_ENDIAN); - return false; -} - -/** - * tep_set_file_bigendian - set if the file is in big endian order - * @tep: a handle to the tep_handle - * @endian: non zero, if the file is in big endian order - * - * This sets if the file is in big endian order - */ -void tep_set_file_bigendian(struct tep_handle *tep, enum tep_endian endian) -{ - if (tep) - tep->file_bigendian = endian; -} - -/** - * tep_is_local_bigendian - return the endian of the saved local machine - * @tep: a handle to the tep_handle - * - * This returns true if the saved local machine in @tep is big endian. - * If @tep is NULL, false is returned. - */ -bool tep_is_local_bigendian(struct tep_handle *tep) -{ - if (tep) - return (tep->host_bigendian == TEP_BIG_ENDIAN); - return 0; -} - -/** - * tep_set_local_bigendian - set the stored local machine endian order - * @tep: a handle to the tep_handle - * @endian: non zero, if the local host has big endian order - * - * This sets the endian order for the local machine. - */ -void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian) -{ - if (tep) - tep->host_bigendian = endian; -} - -/** - * tep_is_old_format - get if an old kernel is used - * @tep: a handle to the tep_handle - * - * This returns true, if an old kernel is used to generate the tracing events or - * false if a new kernel is used. Old kernels did not have header page info. - * If @tep is NULL, false is returned. - */ -bool tep_is_old_format(struct tep_handle *tep) -{ - if (tep) - return tep->old_format; - return false; -} - -/** - * tep_set_test_filters - set a flag to test a filter string - * @tep: a handle to the tep_handle - * @test_filters: the new value of the test_filters flag - * - * This sets a flag to test a filter string. If this flag is set, when - * tep_filter_add_filter_str() API as called,it will print the filter string - * instead of adding it. - */ -void tep_set_test_filters(struct tep_handle *tep, int test_filters) -{ - if (tep) - tep->test_filters = test_filters; -} diff --git a/tools/lib/traceevent/event-parse-local.h b/tools/lib/traceevent/event-parse-local.h deleted file mode 100644 index fd4bbcfbb849..000000000000 --- a/tools/lib/traceevent/event-parse-local.h +++ /dev/null @@ -1,123 +0,0 @@ -// SPDX-License-Identifier: LGPL-2.1 -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt - * - */ - -#ifndef _PARSE_EVENTS_INT_H -#define _PARSE_EVENTS_INT_H - -struct tep_cmdline; -struct cmdline_list; -struct func_map; -struct func_list; -struct event_handler; -struct func_resolver; -struct tep_plugins_dir; - -#define __hidden __attribute__((visibility ("hidden"))) - -struct tep_handle { - int ref_count; - - int header_page_ts_offset; - int header_page_ts_size; - int header_page_size_offset; - int header_page_size_size; - int header_page_data_offset; - int header_page_data_size; - int header_page_overwrite; - - enum tep_endian file_bigendian; - enum tep_endian host_bigendian; - - int old_format; - - int cpus; - int long_size; - int page_size; - - struct tep_cmdline *cmdlines; - struct cmdline_list *cmdlist; - int cmdline_count; - - struct func_map *func_map; - struct func_resolver *func_resolver; - struct func_list *funclist; - unsigned int func_count; - - struct printk_map *printk_map; - struct printk_list *printklist; - unsigned int printk_count; - - struct tep_event **events; - int nr_events; - struct tep_event **sort_events; - enum tep_event_sort_type last_type; - - int type_offset; - int type_size; - - int pid_offset; - int pid_size; - - int pc_offset; - int pc_size; - - int flags_offset; - int flags_size; - - int ld_offset; - int ld_size; - - int test_filters; - - int flags; - - struct tep_format_field *bprint_ip_field; - struct tep_format_field *bprint_fmt_field; - struct tep_format_field *bprint_buf_field; - - struct event_handler *handlers; - struct tep_function_handler *func_handlers; - - /* cache */ - struct tep_event *last_event; - - struct tep_plugins_dir *plugins_dir; -}; - -enum tep_print_parse_type { - PRINT_FMT_STRING, - PRINT_FMT_ARG_DIGIT, - PRINT_FMT_ARG_POINTER, - PRINT_FMT_ARG_STRING, -}; - -struct tep_print_parse { - struct tep_print_parse *next; - - char *format; - int ls; - enum tep_print_parse_type type; - struct tep_print_arg *arg; - struct tep_print_arg *len_as_arg; -}; - -void free_tep_event(struct tep_event *event); -void free_tep_format_field(struct tep_format_field *field); -void free_tep_plugin_paths(struct tep_handle *tep); - -unsigned short data2host2(struct tep_handle *tep, unsigned short data); -unsigned int data2host4(struct tep_handle *tep, unsigned int data); -unsigned long long data2host8(struct tep_handle *tep, unsigned long long data); - -/* access to the internal parser */ -int peek_char(void); -void init_input_buf(const char *buf, unsigned long long size); -unsigned long long get_input_buf_ptr(void); -const char *get_input_buf(void); -enum tep_event_type read_token(char **tok); -void free_token(char *tok); - -#endif /* _PARSE_EVENTS_INT_H */ diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c deleted file mode 100644 index 8e24c4c78c7f..000000000000 --- a/tools/lib/traceevent/event-parse.c +++ /dev/null @@ -1,7624 +0,0 @@ -// SPDX-License-Identifier: LGPL-2.1 -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt - * - * - * The parts for function graph printing was taken and modified from the - * Linux Kernel that were written by - * - Copyright (C) 2009 Frederic Weisbecker, - * Frederic Weisbecker gave his permission to relicense the code to - * the Lesser General Public License. - */ -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include "event-parse.h" - -#include "event-parse-local.h" -#include "event-utils.h" -#include "trace-seq.h" - -static const char *input_buf; -static unsigned long long input_buf_ptr; -static unsigned long long input_buf_siz; - -static int is_flag_field; -static int is_symbolic_field; - -static int show_warning = 1; - -#define do_warning(fmt, ...) \ - do { \ - if (show_warning) \ - warning(fmt, ##__VA_ARGS__); \ - } while (0) - -#define do_warning_event(event, fmt, ...) \ - do { \ - if (!show_warning) \ - continue; \ - \ - if (event) \ - warning("[%s:%s] " fmt, event->system, \ - event->name, ##__VA_ARGS__); \ - else \ - warning(fmt, ##__VA_ARGS__); \ - } while (0) - -/** - * init_input_buf - init buffer for parsing - * @buf: buffer to parse - * @size: the size of the buffer - * - * Initializes the internal buffer that tep_read_token() will parse. - */ -__hidden void init_input_buf(const char *buf, unsigned long long size) -{ - input_buf = buf; - input_buf_siz = size; - input_buf_ptr = 0; -} - -__hidden const char *get_input_buf(void) -{ - return input_buf; -} - -__hidden unsigned long long get_input_buf_ptr(void) -{ - return input_buf_ptr; -} - -struct event_handler { - struct event_handler *next; - int id; - const char *sys_name; - const char *event_name; - tep_event_handler_func func; - void *context; -}; - -struct func_params { - struct func_params *next; - enum tep_func_arg_type type; -}; - -struct tep_function_handler { - struct tep_function_handler *next; - enum tep_func_arg_type ret_type; - char *name; - tep_func_handler func; - struct func_params *params; - int nr_args; -}; - -static unsigned long long -process_defined_func(struct trace_seq *s, void *data, int size, - struct tep_event *event, struct tep_print_arg *arg); - -static void free_func_handle(struct tep_function_handler *func); - -void breakpoint(void) -{ - static int x; - x++; -} - -static struct tep_print_arg *alloc_arg(void) -{ - return calloc(1, sizeof(struct tep_print_arg)); -} - -struct tep_cmdline { - char *comm; - int pid; -}; - -static int cmdline_cmp(const void *a, const void *b) -{ - const struct tep_cmdline *ca = a; - const struct tep_cmdline *cb = b; - - if (ca->pid < cb->pid) - return -1; - if (ca->pid > cb->pid) - return 1; - - return 0; -} - -/* Looking for where to place the key */ -static int cmdline_slot_cmp(const void *a, const void *b) -{ - const struct tep_cmdline *ca = a; - const struct tep_cmdline *cb = b; - const struct tep_cmdline *cb1 = cb + 1; - - if (ca->pid < cb->pid) - return -1; - - if (ca->pid > cb->pid) { - if (ca->pid <= cb1->pid) - return 0; - return 1; - } - - return 0; -} - -struct cmdline_list { - struct cmdline_list *next; - char *comm; - int pid; -}; - -static int cmdline_init(struct tep_handle *tep) -{ - struct cmdline_list *cmdlist = tep->cmdlist; - struct cmdline_list *item; - struct tep_cmdline *cmdlines; - int i; - - cmdlines = malloc(sizeof(*cmdlines) * tep->cmdline_count); - if (!cmdlines) - return -1; - - i = 0; - while (cmdlist) { - cmdlines[i].pid = cmdlist->pid; - cmdlines[i].comm = cmdlist->comm; - i++; - item = cmdlist; - cmdlist = cmdlist->next; - free(item); - } - - qsort(cmdlines, tep->cmdline_count, sizeof(*cmdlines), cmdline_cmp); - - tep->cmdlines = cmdlines; - tep->cmdlist = NULL; - - return 0; -} - -static const char *find_cmdline(struct tep_handle *tep, int pid) -{ - const struct tep_cmdline *comm; - struct tep_cmdline key; - - if (!pid) - return ""; - - if (!tep->cmdlines && cmdline_init(tep)) - return ""; - - key.pid = pid; - - comm = bsearch(&key, tep->cmdlines, tep->cmdline_count, - sizeof(*tep->cmdlines), cmdline_cmp); - - if (comm) - return comm->comm; - return "<...>"; -} - -/** - * tep_is_pid_registered - return if a pid has a cmdline registered - * @tep: a handle to the trace event parser context - * @pid: The pid to check if it has a cmdline registered with. - * - * Returns true if the pid has a cmdline mapped to it - * false otherwise. - */ -bool tep_is_pid_registered(struct tep_handle *tep, int pid) -{ - const struct tep_cmdline *comm; - struct tep_cmdline key; - - if (!pid) - return true; - - if (!tep->cmdlines && cmdline_init(tep)) - return false; - - key.pid = pid; - - comm = bsearch(&key, tep->cmdlines, tep->cmdline_count, - sizeof(*tep->cmdlines), cmdline_cmp); - - if (comm) - return true; - return false; -} - -/* - * If the command lines have been converted to an array, then - * we must add this pid. This is much slower than when cmdlines - * are added before the array is initialized. - */ -static int add_new_comm(struct tep_handle *tep, - const char *comm, int pid, bool override) -{ - struct tep_cmdline *cmdlines = tep->cmdlines; - struct tep_cmdline *cmdline; - struct tep_cmdline key; - char *new_comm; - int cnt; - - if (!pid) - return 0; - - /* avoid duplicates */ - key.pid = pid; - - cmdline = bsearch(&key, tep->cmdlines, tep->cmdline_count, - sizeof(*tep->cmdlines), cmdline_cmp); - if (cmdline) { - if (!override) { - errno = EEXIST; - return -1; - } - new_comm = strdup(comm); - if (!new_comm) { - errno = ENOMEM; - return -1; - } - free(cmdline->comm); - cmdline->comm = new_comm; - - return 0; - } - - cmdlines = realloc(cmdlines, sizeof(*cmdlines) * (tep->cmdline_count + 1)); - if (!cmdlines) { - errno = ENOMEM; - return -1; - } - tep->cmdlines = cmdlines; - - key.comm = strdup(comm); - if (!key.comm) { - errno = ENOMEM; - return -1; - } - - if (!tep->cmdline_count) { - /* no entries yet */ - tep->cmdlines[0] = key; - tep->cmdline_count++; - return 0; - } - - /* Now find where we want to store the new cmdline */ - cmdline = bsearch(&key, tep->cmdlines, tep->cmdline_count - 1, - sizeof(*tep->cmdlines), cmdline_slot_cmp); - - cnt = tep->cmdline_count; - if (cmdline) { - /* cmdline points to the one before the spot we want */ - cmdline++; - cnt -= cmdline - tep->cmdlines; - - } else { - /* The new entry is either before or after the list */ - if (key.pid > tep->cmdlines[tep->cmdline_count - 1].pid) { - tep->cmdlines[tep->cmdline_count++] = key; - return 0; - } - cmdline = &tep->cmdlines[0]; - } - memmove(cmdline + 1, cmdline, (cnt * sizeof(*cmdline))); - *cmdline = key; - - tep->cmdline_count++; - - return 0; -} - -static int _tep_register_comm(struct tep_handle *tep, - const char *comm, int pid, bool override) -{ - struct cmdline_list *item; - - if (tep->cmdlines) - return add_new_comm(tep, comm, pid, override); - - item = malloc(sizeof(*item)); - if (!item) - return -1; - - if (comm) - item->comm = strdup(comm); - else - item->comm = strdup("<...>"); - if (!item->comm) { - free(item); - return -1; - } - item->pid = pid; - item->next = tep->cmdlist; - - tep->cmdlist = item; - tep->cmdline_count++; - - return 0; -} - -/** - * tep_register_comm - register a pid / comm mapping - * @tep: a handle to the trace event parser context - * @comm: the command line to register - * @pid: the pid to map the command line to - * - * This adds a mapping to search for command line names with - * a given pid. The comm is duplicated. If a command with the same pid - * already exist, -1 is returned and errno is set to EEXIST - */ -int tep_register_comm(struct tep_handle *tep, const char *comm, int pid) -{ - return _tep_register_comm(tep, comm, pid, false); -} - -/** - * tep_override_comm - register a pid / comm mapping - * @tep: a handle to the trace event parser context - * @comm: the command line to register - * @pid: the pid to map the command line to - * - * This adds a mapping to search for command line names with - * a given pid. The comm is duplicated. If a command with the same pid - * already exist, the command string is udapted with the new one - */ -int tep_override_comm(struct tep_handle *tep, const char *comm, int pid) -{ - if (!tep->cmdlines && cmdline_init(tep)) { - errno = ENOMEM; - return -1; - } - return _tep_register_comm(tep, comm, pid, true); -} - -struct func_map { - unsigned long long addr; - char *func; - char *mod; -}; - -struct func_list { - struct func_list *next; - unsigned long long addr; - char *func; - char *mod; -}; - -static int func_cmp(const void *a, const void *b) -{ - const struct func_map *fa = a; - const struct func_map *fb = b; - - if (fa->addr < fb->addr) - return -1; - if (fa->addr > fb->addr) - return 1; - - return 0; -} - -/* - * We are searching for a record in between, not an exact - * match. - */ -static int func_bcmp(const void *a, const void *b) -{ - const struct func_map *fa = a; - const struct func_map *fb = b; - - if ((fa->addr == fb->addr) || - - (fa->addr > fb->addr && - fa->addr < (fb+1)->addr)) - return 0; - - if (fa->addr < fb->addr) - return -1; - - return 1; -} - -static int func_map_init(struct tep_handle *tep) -{ - struct func_list *funclist; - struct func_list *item; - struct func_map *func_map; - int i; - - func_map = malloc(sizeof(*func_map) * (tep->func_count + 1)); - if (!func_map) - return -1; - - funclist = tep->funclist; - - i = 0; - while (funclist) { - func_map[i].func = funclist->func; - func_map[i].addr = funclist->addr; - func_map[i].mod = funclist->mod; - i++; - item = funclist; - funclist = funclist->next; - free(item); - } - - qsort(func_map, tep->func_count, sizeof(*func_map), func_cmp); - - /* - * Add a special record at the end. - */ - func_map[tep->func_count].func = NULL; - func_map[tep->func_count].addr = 0; - func_map[tep->func_count].mod = NULL; - - tep->func_map = func_map; - tep->funclist = NULL; - - return 0; -} - -static struct func_map * -__find_func(struct tep_handle *tep, unsigned long long addr) -{ - struct func_map *func; - struct func_map key; - - if (!tep->func_map) - func_map_init(tep); - - key.addr = addr; - - func = bsearch(&key, tep->func_map, tep->func_count, - sizeof(*tep->func_map), func_bcmp); - - return func; -} - -struct func_resolver { - tep_func_resolver_t *func; - void *priv; - struct func_map map; -}; - -/** - * tep_set_function_resolver - set an alternative function resolver - * @tep: a handle to the trace event parser context - * @resolver: function to be used - * @priv: resolver function private state. - * - * Some tools may have already a way to resolve kernel functions, allow them to - * keep using it instead of duplicating all the entries inside tep->funclist. - */ -int tep_set_function_resolver(struct tep_handle *tep, - tep_func_resolver_t *func, void *priv) -{ - struct func_resolver *resolver = malloc(sizeof(*resolver)); - - if (resolver == NULL) - return -1; - - resolver->func = func; - resolver->priv = priv; - - free(tep->func_resolver); - tep->func_resolver = resolver; - - return 0; -} - -/** - * tep_reset_function_resolver - reset alternative function resolver - * @tep: a handle to the trace event parser context - * - * Stop using whatever alternative resolver was set, use the default - * one instead. - */ -void tep_reset_function_resolver(struct tep_handle *tep) -{ - free(tep->func_resolver); - tep->func_resolver = NULL; -} - -static struct func_map * -find_func(struct tep_handle *tep, unsigned long long addr) -{ - struct func_map *map; - - if (!tep->func_resolver) - return __find_func(tep, addr); - - map = &tep->func_resolver->map; - map->mod = NULL; - map->addr = addr; - map->func = tep->func_resolver->func(tep->func_resolver->priv, - &map->addr, &map->mod); - if (map->func == NULL) - return NULL; - - return map; -} - -/** - * tep_find_function - find a function by a given address - * @tep: a handle to the trace event parser context - * @addr: the address to find the function with - * - * Returns a pointer to the function stored that has the given - * address. Note, the address does not have to be exact, it - * will select the function that would contain the address. - */ -const char *tep_find_function(struct tep_handle *tep, unsigned long long addr) -{ - struct func_map *map; - - map = find_func(tep, addr); - if (!map) - return NULL; - - return map->func; -} - -/** - * tep_find_function_address - find a function address by a given address - * @tep: a handle to the trace event parser context - * @addr: the address to find the function with - * - * Returns the address the function starts at. This can be used in - * conjunction with tep_find_function to print both the function - * name and the function offset. - */ -unsigned long long -tep_find_function_address(struct tep_handle *tep, unsigned long long addr) -{ - struct func_map *map; - - map = find_func(tep, addr); - if (!map) - return 0; - - return map->addr; -} - -/** - * tep_register_function - register a function with a given address - * @tep: a handle to the trace event parser context - * @function: the function name to register - * @addr: the address the function starts at - * @mod: the kernel module the function may be in (NULL for none) - * - * This registers a function name with an address and module. - * The @func passed in is duplicated. - */ -int tep_register_function(struct tep_handle *tep, char *func, - unsigned long long addr, char *mod) -{ - struct func_list *item = malloc(sizeof(*item)); - - if (!item) - return -1; - - item->next = tep->funclist; - item->func = strdup(func); - if (!item->func) - goto out_free; - - if (mod) { - item->mod = strdup(mod); - if (!item->mod) - goto out_free_func; - } else - item->mod = NULL; - item->addr = addr; - - tep->funclist = item; - tep->func_count++; - - return 0; - -out_free_func: - free(item->func); - item->func = NULL; -out_free: - free(item); - errno = ENOMEM; - return -1; -} - -/** - * tep_print_funcs - print out the stored functions - * @tep: a handle to the trace event parser context - * - * This prints out the stored functions. - */ -void tep_print_funcs(struct tep_handle *tep) -{ - int i; - - if (!tep->func_map) - func_map_init(tep); - - for (i = 0; i < (int)tep->func_count; i++) { - printf("%016llx %s", - tep->func_map[i].addr, - tep->func_map[i].func); - if (tep->func_map[i].mod) - printf(" [%s]\n", tep->func_map[i].mod); - else - printf("\n"); - } -} - -struct printk_map { - unsigned long long addr; - char *printk; -}; - -struct printk_list { - struct printk_list *next; - unsigned long long addr; - char *printk; -}; - -static int printk_cmp(const void *a, const void *b) -{ - const struct printk_map *pa = a; - const struct printk_map *pb = b; - - if (pa->addr < pb->addr) - return -1; - if (pa->addr > pb->addr) - return 1; - - return 0; -} - -static int printk_map_init(struct tep_handle *tep) -{ - struct printk_list *printklist; - struct printk_list *item; - struct printk_map *printk_map; - int i; - - printk_map = malloc(sizeof(*printk_map) * (tep->printk_count + 1)); - if (!printk_map) - return -1; - - printklist = tep->printklist; - - i = 0; - while (printklist) { - printk_map[i].printk = printklist->printk; - printk_map[i].addr = printklist->addr; - i++; - item = printklist; - printklist = printklist->next; - free(item); - } - - qsort(printk_map, tep->printk_count, sizeof(*printk_map), printk_cmp); - - tep->printk_map = printk_map; - tep->printklist = NULL; - - return 0; -} - -static struct printk_map * -find_printk(struct tep_handle *tep, unsigned long long addr) -{ - struct printk_map *printk; - struct printk_map key; - - if (!tep->printk_map && printk_map_init(tep)) - return NULL; - - key.addr = addr; - - printk = bsearch(&key, tep->printk_map, tep->printk_count, - sizeof(*tep->printk_map), printk_cmp); - - return printk; -} - -/** - * tep_register_print_string - register a string by its address - * @tep: a handle to the trace event parser context - * @fmt: the string format to register - * @addr: the address the string was located at - * - * This registers a string by the address it was stored in the kernel. - * The @fmt passed in is duplicated. - */ -int tep_register_print_string(struct tep_handle *tep, const char *fmt, - unsigned long long addr) -{ - struct printk_list *item = malloc(sizeof(*item)); - char *p; - - if (!item) - return -1; - - item->next = tep->printklist; - item->addr = addr; - - /* Strip off quotes and '\n' from the end */ - if (fmt[0] == '"') - fmt++; - item->printk = strdup(fmt); - if (!item->printk) - goto out_free; - - p = item->printk + strlen(item->printk) - 1; - if (*p == '"') - *p = 0; - - p -= 2; - if (strcmp(p, "\\n") == 0) - *p = 0; - - tep->printklist = item; - tep->printk_count++; - - return 0; - -out_free: - free(item); - errno = ENOMEM; - return -1; -} - -/** - * tep_print_printk - print out the stored strings - * @tep: a handle to the trace event parser context - * - * This prints the string formats that were stored. - */ -void tep_print_printk(struct tep_handle *tep) -{ - int i; - - if (!tep->printk_map) - printk_map_init(tep); - - for (i = 0; i < (int)tep->printk_count; i++) { - printf("%016llx %s\n", - tep->printk_map[i].addr, - tep->printk_map[i].printk); - } -} - -static struct tep_event *alloc_event(void) -{ - return calloc(1, sizeof(struct tep_event)); -} - -static int add_event(struct tep_handle *tep, struct tep_event *event) -{ - int i; - struct tep_event **events = realloc(tep->events, sizeof(event) * - (tep->nr_events + 1)); - if (!events) - return -1; - - tep->events = events; - - for (i = 0; i < tep->nr_events; i++) { - if (tep->events[i]->id > event->id) - break; - } - if (i < tep->nr_events) - memmove(&tep->events[i + 1], - &tep->events[i], - sizeof(event) * (tep->nr_events - i)); - - tep->events[i] = event; - tep->nr_events++; - - event->tep = tep; - - return 0; -} - -static int event_item_type(enum tep_event_type type) -{ - switch (type) { - case TEP_EVENT_ITEM ... TEP_EVENT_SQUOTE: - return 1; - case TEP_EVENT_ERROR ... TEP_EVENT_DELIM: - default: - return 0; - } -} - -static void free_flag_sym(struct tep_print_flag_sym *fsym) -{ - struct tep_print_flag_sym *next; - - while (fsym) { - next = fsym->next; - free(fsym->value); - free(fsym->str); - free(fsym); - fsym = next; - } -} - -static void free_arg(struct tep_print_arg *arg) -{ - struct tep_print_arg *farg; - - if (!arg) - return; - - switch (arg->type) { - case TEP_PRINT_ATOM: - free(arg->atom.atom); - break; - case TEP_PRINT_FIELD: - free(arg->field.name); - break; - case TEP_PRINT_FLAGS: - free_arg(arg->flags.field); - free(arg->flags.delim); - free_flag_sym(arg->flags.flags); - break; - case TEP_PRINT_SYMBOL: - free_arg(arg->symbol.field); - free_flag_sym(arg->symbol.symbols); - break; - case TEP_PRINT_HEX: - case TEP_PRINT_HEX_STR: - free_arg(arg->hex.field); - free_arg(arg->hex.size); - break; - case TEP_PRINT_INT_ARRAY: - free_arg(arg->int_array.field); - free_arg(arg->int_array.count); - free_arg(arg->int_array.el_size); - break; - case TEP_PRINT_TYPE: - free(arg->typecast.type); - free_arg(arg->typecast.item); - break; - case TEP_PRINT_STRING: - case TEP_PRINT_BSTRING: - free(arg->string.string); - break; - case TEP_PRINT_BITMASK: - free(arg->bitmask.bitmask); - break; - case TEP_PRINT_DYNAMIC_ARRAY: - case TEP_PRINT_DYNAMIC_ARRAY_LEN: - free(arg->dynarray.index); - break; - case TEP_PRINT_OP: - free(arg->op.op); - free_arg(arg->op.left); - free_arg(arg->op.right); - break; - case TEP_PRINT_FUNC: - while (arg->func.args) { - farg = arg->func.args; - arg->func.args = farg->next; - free_arg(farg); - } - break; - - case TEP_PRINT_NULL: - default: - break; - } - - free(arg); -} - -static enum tep_event_type get_type(int ch) -{ - if (ch == '\n') - return TEP_EVENT_NEWLINE; - if (isspace(ch)) - return TEP_EVENT_SPACE; - if (isalnum(ch) || ch == '_') - return TEP_EVENT_ITEM; - if (ch == '\'') - return TEP_EVENT_SQUOTE; - if (ch == '"') - return TEP_EVENT_DQUOTE; - if (!isprint(ch)) - return TEP_EVENT_NONE; - if (ch == '(' || ch == ')' || ch == ',') - return TEP_EVENT_DELIM; - - return TEP_EVENT_OP; -} - -static int __read_char(void) -{ - if (input_buf_ptr >= input_buf_siz) - return -1; - - return input_buf[input_buf_ptr++]; -} - -/** - * peek_char - peek at the next character that will be read - * - * Returns the next character read, or -1 if end of buffer. - */ -__hidden int peek_char(void) -{ - if (input_buf_ptr >= input_buf_siz) - return -1; - - return input_buf[input_buf_ptr]; -} - -static int extend_token(char **tok, char *buf, int size) -{ - char *newtok = realloc(*tok, size); - - if (!newtok) { - free(*tok); - *tok = NULL; - return -1; - } - - if (!*tok) - strcpy(newtok, buf); - else - strcat(newtok, buf); - *tok = newtok; - - return 0; -} - -static enum tep_event_type force_token(const char *str, char **tok); - -static enum tep_event_type __read_token(char **tok) -{ - char buf[BUFSIZ]; - int ch, last_ch, quote_ch, next_ch; - int i = 0; - int tok_size = 0; - enum tep_event_type type; - - *tok = NULL; - - - ch = __read_char(); - if (ch < 0) - return TEP_EVENT_NONE; - - type = get_type(ch); - if (type == TEP_EVENT_NONE) - return type; - - buf[i++] = ch; - - switch (type) { - case TEP_EVENT_NEWLINE: - case TEP_EVENT_DELIM: - if (asprintf(tok, "%c", ch) < 0) - return TEP_EVENT_ERROR; - - return type; - - case TEP_EVENT_OP: - switch (ch) { - case '-': - next_ch = peek_char(); - if (next_ch == '>') { - buf[i++] = __read_char(); - break; - } - /* fall through */ - case '+': - case '|': - case '&': - case '>': - case '<': - last_ch = ch; - ch = peek_char(); - if (ch != last_ch) - goto test_equal; - buf[i++] = __read_char(); - switch (last_ch) { - case '>': - case '<': - goto test_equal; - default: - break; - } - break; - case '!': - case '=': - goto test_equal; - default: /* what should we do instead? */ - break; - } - buf[i] = 0; - *tok = strdup(buf); - return type; - - test_equal: - ch = peek_char(); - if (ch == '=') - buf[i++] = __read_char(); - goto out; - - case TEP_EVENT_DQUOTE: - case TEP_EVENT_SQUOTE: - /* don't keep quotes */ - i--; - quote_ch = ch; - last_ch = 0; - concat: - do { - if (i == (BUFSIZ - 1)) { - buf[i] = 0; - tok_size += BUFSIZ; - - if (extend_token(tok, buf, tok_size) < 0) - return TEP_EVENT_NONE; - i = 0; - } - last_ch = ch; - ch = __read_char(); - buf[i++] = ch; - /* the '\' '\' will cancel itself */ - if (ch == '\\' && last_ch == '\\') - last_ch = 0; - } while (ch != quote_ch || last_ch == '\\'); - /* remove the last quote */ - i--; - - /* - * For strings (double quotes) check the next token. - * If it is another string, concatinate the two. - */ - if (type == TEP_EVENT_DQUOTE) { - unsigned long long save_input_buf_ptr = input_buf_ptr; - - do { - ch = __read_char(); - } while (isspace(ch)); - if (ch == '"') - goto concat; - input_buf_ptr = save_input_buf_ptr; - } - - goto out; - - case TEP_EVENT_ERROR ... TEP_EVENT_SPACE: - case TEP_EVENT_ITEM: - default: - break; - } - - while (get_type(peek_char()) == type) { - if (i == (BUFSIZ - 1)) { - buf[i] = 0; - tok_size += BUFSIZ; - - if (extend_token(tok, buf, tok_size) < 0) - return TEP_EVENT_NONE; - i = 0; - } - ch = __read_char(); - buf[i++] = ch; - } - - out: - buf[i] = 0; - if (extend_token(tok, buf, tok_size + i + 1) < 0) - return TEP_EVENT_NONE; - - if (type == TEP_EVENT_ITEM) { - /* - * Older versions of the kernel has a bug that - * creates invalid symbols and will break the mac80211 - * parsing. This is a work around to that bug. - * - * See Linux kernel commit: - * 811cb50baf63461ce0bdb234927046131fc7fa8b - */ - if (strcmp(*tok, "LOCAL_PR_FMT") == 0) { - free(*tok); - *tok = NULL; - return force_token("\"%s\" ", tok); - } else if (strcmp(*tok, "STA_PR_FMT") == 0) { - free(*tok); - *tok = NULL; - return force_token("\" sta:%pM\" ", tok); - } else if (strcmp(*tok, "VIF_PR_FMT") == 0) { - free(*tok); - *tok = NULL; - return force_token("\" vif:%p(%d)\" ", tok); - } - } - - return type; -} - -static enum tep_event_type force_token(const char *str, char **tok) -{ - const char *save_input_buf; - unsigned long long save_input_buf_ptr; - unsigned long long save_input_buf_siz; - enum tep_event_type type; - - /* save off the current input pointers */ - save_input_buf = input_buf; - save_input_buf_ptr = input_buf_ptr; - save_input_buf_siz = input_buf_siz; - - init_input_buf(str, strlen(str)); - - type = __read_token(tok); - - /* reset back to original token */ - input_buf = save_input_buf; - input_buf_ptr = save_input_buf_ptr; - input_buf_siz = save_input_buf_siz; - - return type; -} - -/** - * free_token - free a token returned by tep_read_token - * @token: the token to free - */ -__hidden void free_token(char *tok) -{ - if (tok) - free(tok); -} - -/** - * read_token - access to utilities to use the tep parser - * @tok: The token to return - * - * This will parse tokens from the string given by - * tep_init_data(). - * - * Returns the token type. - */ -__hidden enum tep_event_type read_token(char **tok) -{ - enum tep_event_type type; - - for (;;) { - type = __read_token(tok); - if (type != TEP_EVENT_SPACE) - return type; - - free_token(*tok); - } - - /* not reached */ - *tok = NULL; - return TEP_EVENT_NONE; -} - -/* no newline */ -static enum tep_event_type read_token_item(char **tok) -{ - enum tep_event_type type; - - for (;;) { - type = __read_token(tok); - if (type != TEP_EVENT_SPACE && type != TEP_EVENT_NEWLINE) - return type; - free_token(*tok); - *tok = NULL; - } - - /* not reached */ - *tok = NULL; - return TEP_EVENT_NONE; -} - -static int test_type(enum tep_event_type type, enum tep_event_type expect) -{ - if (type != expect) { - do_warning("Error: expected type %d but read %d", - expect, type); - return -1; - } - return 0; -} - -static int test_type_token(enum tep_event_type type, const char *token, - enum tep_event_type expect, const char *expect_tok) -{ - if (type != expect) { - do_warning("Error: expected type %d but read %d", - expect, type); - return -1; - } - - if (strcmp(token, expect_tok) != 0) { - do_warning("Error: expected '%s' but read '%s'", - expect_tok, token); - return -1; - } - return 0; -} - -static int __read_expect_type(enum tep_event_type expect, char **tok, int newline_ok) -{ - enum tep_event_type type; - - if (newline_ok) - type = read_token(tok); - else - type = read_token_item(tok); - return test_type(type, expect); -} - -static int read_expect_type(enum tep_event_type expect, char **tok) -{ - return __read_expect_type(expect, tok, 1); -} - -static int __read_expected(enum tep_event_type expect, const char *str, - int newline_ok) -{ - enum tep_event_type type; - char *token; - int ret; - - if (newline_ok) - type = read_token(&token); - else - type = read_token_item(&token); - - ret = test_type_token(type, token, expect, str); - - free_token(token); - - return ret; -} - -static int read_expected(enum tep_event_type expect, const char *str) -{ - return __read_expected(expect, str, 1); -} - -static int read_expected_item(enum tep_event_type expect, const char *str) -{ - return __read_expected(expect, str, 0); -} - -static char *event_read_name(void) -{ - char *token; - - if (read_expected(TEP_EVENT_ITEM, "name") < 0) - return NULL; - - if (read_expected(TEP_EVENT_OP, ":") < 0) - return NULL; - - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto fail; - - return token; - - fail: - free_token(token); - return NULL; -} - -static int event_read_id(void) -{ - char *token; - int id; - - if (read_expected_item(TEP_EVENT_ITEM, "ID") < 0) - return -1; - - if (read_expected(TEP_EVENT_OP, ":") < 0) - return -1; - - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto fail; - - id = strtoul(token, NULL, 0); - free_token(token); - return id; - - fail: - free_token(token); - return -1; -} - -static int field_is_string(struct tep_format_field *field) -{ - if ((field->flags & TEP_FIELD_IS_ARRAY) && - (strstr(field->type, "char") || strstr(field->type, "u8") || - strstr(field->type, "s8"))) - return 1; - - return 0; -} - -static int field_is_dynamic(struct tep_format_field *field) -{ - if (strncmp(field->type, "__data_loc", 10) == 0) - return 1; - - return 0; -} - -static int field_is_relative_dynamic(struct tep_format_field *field) -{ - if (strncmp(field->type, "__rel_loc", 9) == 0) - return 1; - - return 0; -} - -static int field_is_long(struct tep_format_field *field) -{ - /* includes long long */ - if (strstr(field->type, "long")) - return 1; - - return 0; -} - -static unsigned int type_size(const char *name) -{ - /* This covers all TEP_FIELD_IS_STRING types. */ - static struct { - const char *type; - unsigned int size; - } table[] = { - { "u8", 1 }, - { "u16", 2 }, - { "u32", 4 }, - { "u64", 8 }, - { "s8", 1 }, - { "s16", 2 }, - { "s32", 4 }, - { "s64", 8 }, - { "char", 1 }, - { }, - }; - int i; - - for (i = 0; table[i].type; i++) { - if (!strcmp(table[i].type, name)) - return table[i].size; - } - - return 0; -} - -static int append(char **buf, const char *delim, const char *str) -{ - char *new_buf; - - new_buf = realloc(*buf, strlen(*buf) + strlen(delim) + strlen(str) + 1); - if (!new_buf) - return -1; - strcat(new_buf, delim); - strcat(new_buf, str); - *buf = new_buf; - return 0; -} - -static int event_read_fields(struct tep_event *event, struct tep_format_field **fields) -{ - struct tep_format_field *field = NULL; - enum tep_event_type type; - char *token; - char *last_token; - char *delim = " "; - int count = 0; - int ret; - - do { - unsigned int size_dynamic = 0; - - type = read_token(&token); - if (type == TEP_EVENT_NEWLINE) { - free_token(token); - return count; - } - - count++; - - if (test_type_token(type, token, TEP_EVENT_ITEM, "field")) - goto fail; - free_token(token); - - type = read_token(&token); - /* - * The ftrace fields may still use the "special" name. - * Just ignore it. - */ - if (event->flags & TEP_EVENT_FL_ISFTRACE && - type == TEP_EVENT_ITEM && strcmp(token, "special") == 0) { - free_token(token); - type = read_token(&token); - } - - if (test_type_token(type, token, TEP_EVENT_OP, ":") < 0) - goto fail; - - free_token(token); - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto fail; - - last_token = token; - - field = calloc(1, sizeof(*field)); - if (!field) - goto fail; - - field->event = event; - - /* read the rest of the type */ - for (;;) { - type = read_token(&token); - if (type == TEP_EVENT_ITEM || - (type == TEP_EVENT_OP && strcmp(token, "*") == 0) || - /* - * Some of the ftrace fields are broken and have - * an illegal "." in them. - */ - (event->flags & TEP_EVENT_FL_ISFTRACE && - type == TEP_EVENT_OP && strcmp(token, ".") == 0)) { - - if (strcmp(token, "*") == 0) - field->flags |= TEP_FIELD_IS_POINTER; - - if (field->type) { - ret = append(&field->type, delim, last_token); - free(last_token); - if (ret < 0) - goto fail; - } else - field->type = last_token; - last_token = token; - delim = " "; - continue; - } - - /* Handle __attribute__((user)) */ - if ((type == TEP_EVENT_DELIM) && - strcmp("__attribute__", last_token) == 0 && - token[0] == '(') { - int depth = 1; - int ret; - - ret = append(&field->type, " ", last_token); - ret |= append(&field->type, "", "("); - if (ret < 0) - goto fail; - - delim = " "; - while ((type = read_token(&token)) != TEP_EVENT_NONE) { - if (type == TEP_EVENT_DELIM) { - if (token[0] == '(') - depth++; - else if (token[0] == ')') - depth--; - if (!depth) - break; - ret = append(&field->type, "", token); - delim = ""; - } else { - ret = append(&field->type, delim, token); - delim = " "; - } - if (ret < 0) - goto fail; - free(last_token); - last_token = token; - } - continue; - } - break; - } - - if (!field->type) { - do_warning_event(event, "%s: no type found", __func__); - goto fail; - } - field->name = field->alias = last_token; - - if (test_type(type, TEP_EVENT_OP)) - goto fail; - - if (strcmp(token, "[") == 0) { - enum tep_event_type last_type = type; - char *brackets = token; - - field->flags |= TEP_FIELD_IS_ARRAY; - - type = read_token(&token); - - if (type == TEP_EVENT_ITEM) - field->arraylen = strtoul(token, NULL, 0); - else - field->arraylen = 0; - - while (strcmp(token, "]") != 0) { - const char *delim; - - if (last_type == TEP_EVENT_ITEM && - type == TEP_EVENT_ITEM) - delim = " "; - else - delim = ""; - - last_type = type; - - ret = append(&brackets, delim, token); - if (ret < 0) { - free(brackets); - goto fail; - } - /* We only care about the last token */ - field->arraylen = strtoul(token, NULL, 0); - free_token(token); - type = read_token(&token); - if (type == TEP_EVENT_NONE) { - free(brackets); - do_warning_event(event, "failed to find token"); - goto fail; - } - } - - free_token(token); - - ret = append(&brackets, "", "]"); - if (ret < 0) { - free(brackets); - goto fail; - } - - /* add brackets to type */ - - type = read_token(&token); - /* - * If the next token is not an OP, then it is of - * the format: type [] item; - */ - if (type == TEP_EVENT_ITEM) { - ret = append(&field->type, " ", field->name); - if (ret < 0) { - free(brackets); - goto fail; - } - ret = append(&field->type, "", brackets); - - size_dynamic = type_size(field->name); - free_token(field->name); - field->name = field->alias = token; - type = read_token(&token); - } else { - ret = append(&field->type, "", brackets); - if (ret < 0) { - free(brackets); - goto fail; - } - } - free(brackets); - } - - if (field_is_string(field)) - field->flags |= TEP_FIELD_IS_STRING; - if (field_is_dynamic(field)) - field->flags |= TEP_FIELD_IS_DYNAMIC; - if (field_is_relative_dynamic(field)) - field->flags |= TEP_FIELD_IS_DYNAMIC | TEP_FIELD_IS_RELATIVE; - if (field_is_long(field)) - field->flags |= TEP_FIELD_IS_LONG; - - if (test_type_token(type, token, TEP_EVENT_OP, ";")) - goto fail; - free_token(token); - - if (read_expected(TEP_EVENT_ITEM, "offset") < 0) - goto fail_expect; - - if (read_expected(TEP_EVENT_OP, ":") < 0) - goto fail_expect; - - if (read_expect_type(TEP_EVENT_ITEM, &token)) - goto fail; - field->offset = strtoul(token, NULL, 0); - free_token(token); - - if (read_expected(TEP_EVENT_OP, ";") < 0) - goto fail_expect; - - if (read_expected(TEP_EVENT_ITEM, "size") < 0) - goto fail_expect; - - if (read_expected(TEP_EVENT_OP, ":") < 0) - goto fail_expect; - - if (read_expect_type(TEP_EVENT_ITEM, &token)) - goto fail; - field->size = strtoul(token, NULL, 0); - free_token(token); - - if (read_expected(TEP_EVENT_OP, ";") < 0) - goto fail_expect; - - type = read_token(&token); - if (type != TEP_EVENT_NEWLINE) { - /* newer versions of the kernel have a "signed" type */ - if (test_type_token(type, token, TEP_EVENT_ITEM, "signed")) - goto fail; - - free_token(token); - - if (read_expected(TEP_EVENT_OP, ":") < 0) - goto fail_expect; - - if (read_expect_type(TEP_EVENT_ITEM, &token)) - goto fail; - - if (strtoul(token, NULL, 0)) - field->flags |= TEP_FIELD_IS_SIGNED; - - free_token(token); - if (read_expected(TEP_EVENT_OP, ";") < 0) - goto fail_expect; - - if (read_expect_type(TEP_EVENT_NEWLINE, &token)) - goto fail; - } - - free_token(token); - - if (field->flags & TEP_FIELD_IS_ARRAY) { - if (field->arraylen) - field->elementsize = field->size / field->arraylen; - else if (field->flags & TEP_FIELD_IS_DYNAMIC) - field->elementsize = size_dynamic; - else if (field->flags & TEP_FIELD_IS_STRING) - field->elementsize = 1; - else if (field->flags & TEP_FIELD_IS_LONG) - field->elementsize = event->tep ? - event->tep->long_size : - sizeof(long); - } else - field->elementsize = field->size; - - *fields = field; - fields = &field->next; - - } while (1); - - return 0; - -fail: - free_token(token); -fail_expect: - if (field) { - free(field->type); - free(field->name); - free(field); - } - return -1; -} - -static int event_read_format(struct tep_event *event) -{ - char *token; - int ret; - - if (read_expected_item(TEP_EVENT_ITEM, "format") < 0) - return -1; - - if (read_expected(TEP_EVENT_OP, ":") < 0) - return -1; - - if (read_expect_type(TEP_EVENT_NEWLINE, &token)) - goto fail; - free_token(token); - - ret = event_read_fields(event, &event->format.common_fields); - if (ret < 0) - return ret; - event->format.nr_common = ret; - - ret = event_read_fields(event, &event->format.fields); - if (ret < 0) - return ret; - event->format.nr_fields = ret; - - return 0; - - fail: - free_token(token); - return -1; -} - -static enum tep_event_type -process_arg_token(struct tep_event *event, struct tep_print_arg *arg, - char **tok, enum tep_event_type type); - -static enum tep_event_type -process_arg(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - enum tep_event_type type; - char *token; - - type = read_token(&token); - *tok = token; - - return process_arg_token(event, arg, tok, type); -} - -static enum tep_event_type -process_op(struct tep_event *event, struct tep_print_arg *arg, char **tok); - -/* - * For __print_symbolic() and __print_flags, we need to completely - * evaluate the first argument, which defines what to print next. - */ -static enum tep_event_type -process_field_arg(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - enum tep_event_type type; - - type = process_arg(event, arg, tok); - - while (type == TEP_EVENT_OP) { - type = process_op(event, arg, tok); - } - - return type; -} - -static enum tep_event_type -process_cond(struct tep_event *event, struct tep_print_arg *top, char **tok) -{ - struct tep_print_arg *arg, *left, *right; - enum tep_event_type type; - char *token = NULL; - - arg = alloc_arg(); - left = alloc_arg(); - right = alloc_arg(); - - if (!arg || !left || !right) { - do_warning_event(event, "%s: not enough memory!", __func__); - /* arg will be freed at out_free */ - free_arg(left); - free_arg(right); - goto out_free; - } - - arg->type = TEP_PRINT_OP; - arg->op.left = left; - arg->op.right = right; - - *tok = NULL; - type = process_arg(event, left, &token); - - again: - if (type == TEP_EVENT_ERROR) - goto out_free; - - /* Handle other operations in the arguments */ - if (type == TEP_EVENT_OP && strcmp(token, ":") != 0) { - type = process_op(event, left, &token); - goto again; - } - - if (test_type_token(type, token, TEP_EVENT_OP, ":")) - goto out_free; - - arg->op.op = token; - - type = process_arg(event, right, &token); - - top->op.right = arg; - - *tok = token; - return type; - -out_free: - /* Top may point to itself */ - top->op.right = NULL; - free_token(token); - free_arg(arg); - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_array(struct tep_event *event, struct tep_print_arg *top, char **tok) -{ - struct tep_print_arg *arg; - enum tep_event_type type; - char *token = NULL; - - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s: not enough memory!", __func__); - /* '*tok' is set to top->op.op. No need to free. */ - *tok = NULL; - return TEP_EVENT_ERROR; - } - - *tok = NULL; - type = process_arg(event, arg, &token); - if (test_type_token(type, token, TEP_EVENT_OP, "]")) - goto out_free; - - top->op.right = arg; - - free_token(token); - type = read_token_item(&token); - *tok = token; - - return type; - -out_free: - free_token(token); - free_arg(arg); - return TEP_EVENT_ERROR; -} - -static int get_op_prio(char *op) -{ - if (!op[1]) { - switch (op[0]) { - case '~': - case '!': - return 4; - case '*': - case '/': - case '%': - return 6; - case '+': - case '-': - return 7; - /* '>>' and '<<' are 8 */ - case '<': - case '>': - return 9; - /* '==' and '!=' are 10 */ - case '&': - return 11; - case '^': - return 12; - case '|': - return 13; - case '?': - return 16; - default: - do_warning("unknown op '%c'", op[0]); - return -1; - } - } else { - if (strcmp(op, "++") == 0 || - strcmp(op, "--") == 0) { - return 3; - } else if (strcmp(op, ">>") == 0 || - strcmp(op, "<<") == 0) { - return 8; - } else if (strcmp(op, ">=") == 0 || - strcmp(op, "<=") == 0) { - return 9; - } else if (strcmp(op, "==") == 0 || - strcmp(op, "!=") == 0) { - return 10; - } else if (strcmp(op, "&&") == 0) { - return 14; - } else if (strcmp(op, "||") == 0) { - return 15; - } else { - do_warning("unknown op '%s'", op); - return -1; - } - } -} - -static int set_op_prio(struct tep_print_arg *arg) -{ - - /* single ops are the greatest */ - if (!arg->op.left || arg->op.left->type == TEP_PRINT_NULL) - arg->op.prio = 0; - else - arg->op.prio = get_op_prio(arg->op.op); - - return arg->op.prio; -} - -/* Note, *tok does not get freed, but will most likely be saved */ -static enum tep_event_type -process_op(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - struct tep_print_arg *left, *right = NULL; - enum tep_event_type type; - char *token; - - /* the op is passed in via tok */ - token = *tok; - - if (arg->type == TEP_PRINT_OP && !arg->op.left) { - /* handle single op */ - if (token[1]) { - do_warning_event(event, "bad op token %s", token); - goto out_free; - } - switch (token[0]) { - case '~': - case '!': - case '+': - case '-': - break; - default: - do_warning_event(event, "bad op token %s", token); - goto out_free; - - } - - /* make an empty left */ - left = alloc_arg(); - if (!left) - goto out_warn_free; - - left->type = TEP_PRINT_NULL; - arg->op.left = left; - - right = alloc_arg(); - if (!right) - goto out_warn_free; - - arg->op.right = right; - - /* do not free the token, it belongs to an op */ - *tok = NULL; - type = process_arg(event, right, tok); - - } else if (strcmp(token, "?") == 0) { - - left = alloc_arg(); - if (!left) - goto out_warn_free; - - /* copy the top arg to the left */ - *left = *arg; - - arg->type = TEP_PRINT_OP; - arg->op.op = token; - arg->op.left = left; - arg->op.prio = 0; - - /* it will set arg->op.right */ - type = process_cond(event, arg, tok); - - } else if (strcmp(token, ">>") == 0 || - strcmp(token, "<<") == 0 || - strcmp(token, "&") == 0 || - strcmp(token, "|") == 0 || - strcmp(token, "&&") == 0 || - strcmp(token, "||") == 0 || - strcmp(token, "-") == 0 || - strcmp(token, "+") == 0 || - strcmp(token, "*") == 0 || - strcmp(token, "^") == 0 || - strcmp(token, "/") == 0 || - strcmp(token, "%") == 0 || - strcmp(token, "<") == 0 || - strcmp(token, ">") == 0 || - strcmp(token, "<=") == 0 || - strcmp(token, ">=") == 0 || - strcmp(token, "==") == 0 || - strcmp(token, "!=") == 0) { - - left = alloc_arg(); - if (!left) - goto out_warn_free; - - /* copy the top arg to the left */ - *left = *arg; - - arg->type = TEP_PRINT_OP; - arg->op.op = token; - arg->op.left = left; - arg->op.right = NULL; - - if (set_op_prio(arg) == -1) { - event->flags |= TEP_EVENT_FL_FAILED; - /* arg->op.op (= token) will be freed at out_free */ - arg->op.op = NULL; - goto out_free; - } - - type = read_token_item(&token); - *tok = token; - - /* could just be a type pointer */ - if ((strcmp(arg->op.op, "*") == 0) && - type == TEP_EVENT_DELIM && (strcmp(token, ")") == 0)) { - int ret; - - if (left->type != TEP_PRINT_ATOM) { - do_warning_event(event, "bad pointer type"); - goto out_free; - } - ret = append(&left->atom.atom, " ", "*"); - if (ret < 0) - goto out_warn_free; - - free(arg->op.op); - *arg = *left; - free(left); - - return type; - } - - right = alloc_arg(); - if (!right) - goto out_warn_free; - - type = process_arg_token(event, right, tok, type); - if (type == TEP_EVENT_ERROR) { - free_arg(right); - /* token was freed in process_arg_token() via *tok */ - token = NULL; - goto out_free; - } - - if (right->type == TEP_PRINT_OP && - get_op_prio(arg->op.op) < get_op_prio(right->op.op)) { - struct tep_print_arg tmp; - - /* rotate ops according to the priority */ - arg->op.right = right->op.left; - - tmp = *arg; - *arg = *right; - *right = tmp; - - arg->op.left = right; - } else { - arg->op.right = right; - } - - } else if (strcmp(token, "[") == 0) { - - left = alloc_arg(); - if (!left) - goto out_warn_free; - - *left = *arg; - - arg->type = TEP_PRINT_OP; - arg->op.op = token; - arg->op.left = left; - - arg->op.prio = 0; - - /* it will set arg->op.right */ - type = process_array(event, arg, tok); - - } else { - do_warning_event(event, "unknown op '%s'", token); - event->flags |= TEP_EVENT_FL_FAILED; - /* the arg is now the left side */ - goto out_free; - } - - if (type == TEP_EVENT_OP && strcmp(*tok, ":") != 0) { - int prio; - - /* higher prios need to be closer to the root */ - prio = get_op_prio(*tok); - - if (prio > arg->op.prio) - return process_op(event, arg, tok); - - return process_op(event, right, tok); - } - - return type; - -out_warn_free: - do_warning_event(event, "%s: not enough memory!", __func__); -out_free: - free_token(token); - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_entry(struct tep_event *event __maybe_unused, struct tep_print_arg *arg, - char **tok) -{ - enum tep_event_type type; - char *field; - char *token; - - if (read_expected(TEP_EVENT_OP, "->") < 0) - goto out_err; - - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto out_free; - field = token; - - arg->type = TEP_PRINT_FIELD; - arg->field.name = field; - - if (is_flag_field) { - arg->field.field = tep_find_any_field(event, arg->field.name); - arg->field.field->flags |= TEP_FIELD_IS_FLAG; - is_flag_field = 0; - } else if (is_symbolic_field) { - arg->field.field = tep_find_any_field(event, arg->field.name); - arg->field.field->flags |= TEP_FIELD_IS_SYMBOLIC; - is_symbolic_field = 0; - } - - type = read_token(&token); - *tok = token; - - return type; - - out_free: - free_token(token); - out_err: - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static int alloc_and_process_delim(struct tep_event *event, char *next_token, - struct tep_print_arg **print_arg) -{ - struct tep_print_arg *field; - enum tep_event_type type; - char *token; - int ret = 0; - - field = alloc_arg(); - if (!field) { - do_warning_event(event, "%s: not enough memory!", __func__); - errno = ENOMEM; - return -1; - } - - type = process_arg(event, field, &token); - - if (test_type_token(type, token, TEP_EVENT_DELIM, next_token)) { - errno = EINVAL; - ret = -1; - free_arg(field); - goto out_free_token; - } - - *print_arg = field; - -out_free_token: - free_token(token); - - return ret; -} - -static char *arg_eval (struct tep_print_arg *arg); - -static unsigned long long -eval_type_str(unsigned long long val, const char *type, int pointer) -{ - int sign = 0; - char *ref; - int len; - - len = strlen(type); - - if (pointer) { - - if (type[len-1] != '*') { - do_warning("pointer expected with non pointer type"); - return val; - } - - ref = malloc(len); - if (!ref) { - do_warning("%s: not enough memory!", __func__); - return val; - } - memcpy(ref, type, len); - - /* chop off the " *" */ - ref[len - 2] = 0; - - val = eval_type_str(val, ref, 0); - free(ref); - return val; - } - - /* check if this is a pointer */ - if (type[len - 1] == '*') - return val; - - /* Try to figure out the arg size*/ - if (strncmp(type, "struct", 6) == 0) - /* all bets off */ - return val; - - if (strcmp(type, "u8") == 0) - return val & 0xff; - - if (strcmp(type, "u16") == 0) - return val & 0xffff; - - if (strcmp(type, "u32") == 0) - return val & 0xffffffff; - - if (strcmp(type, "u64") == 0 || - strcmp(type, "s64") == 0) - return val; - - if (strcmp(type, "s8") == 0) - return (unsigned long long)(char)val & 0xff; - - if (strcmp(type, "s16") == 0) - return (unsigned long long)(short)val & 0xffff; - - if (strcmp(type, "s32") == 0) - return (unsigned long long)(int)val & 0xffffffff; - - if (strncmp(type, "unsigned ", 9) == 0) { - sign = 0; - type += 9; - } - - if (strcmp(type, "char") == 0) { - if (sign) - return (unsigned long long)(char)val & 0xff; - else - return val & 0xff; - } - - if (strcmp(type, "short") == 0) { - if (sign) - return (unsigned long long)(short)val & 0xffff; - else - return val & 0xffff; - } - - if (strcmp(type, "int") == 0) { - if (sign) - return (unsigned long long)(int)val & 0xffffffff; - else - return val & 0xffffffff; - } - - return val; -} - -/* - * Try to figure out the type. - */ -static unsigned long long -eval_type(unsigned long long val, struct tep_print_arg *arg, int pointer) -{ - if (arg->type != TEP_PRINT_TYPE) { - do_warning("expected type argument"); - return 0; - } - - return eval_type_str(val, arg->typecast.type, pointer); -} - -static int arg_num_eval(struct tep_print_arg *arg, long long *val) -{ - long long left, right; - int ret = 1; - - switch (arg->type) { - case TEP_PRINT_ATOM: - *val = strtoll(arg->atom.atom, NULL, 0); - break; - case TEP_PRINT_TYPE: - ret = arg_num_eval(arg->typecast.item, val); - if (!ret) - break; - *val = eval_type(*val, arg, 0); - break; - case TEP_PRINT_OP: - switch (arg->op.op[0]) { - case '|': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - if (arg->op.op[1]) - *val = left || right; - else - *val = left | right; - break; - case '&': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - if (arg->op.op[1]) - *val = left && right; - else - *val = left & right; - break; - case '<': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - switch (arg->op.op[1]) { - case 0: - *val = left < right; - break; - case '<': - *val = left << right; - break; - case '=': - *val = left <= right; - break; - default: - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } - break; - case '>': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - switch (arg->op.op[1]) { - case 0: - *val = left > right; - break; - case '>': - *val = left >> right; - break; - case '=': - *val = left >= right; - break; - default: - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } - break; - case '=': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - - if (arg->op.op[1] != '=') { - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } else - *val = left == right; - break; - case '!': - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - - switch (arg->op.op[1]) { - case '=': - *val = left != right; - break; - default: - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } - break; - case '-': - /* check for negative */ - if (arg->op.left->type == TEP_PRINT_NULL) - left = 0; - else - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - *val = left - right; - break; - case '+': - if (arg->op.left->type == TEP_PRINT_NULL) - left = 0; - else - ret = arg_num_eval(arg->op.left, &left); - if (!ret) - break; - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - *val = left + right; - break; - case '~': - ret = arg_num_eval(arg->op.right, &right); - if (!ret) - break; - *val = ~right; - break; - default: - do_warning("unknown op '%s'", arg->op.op); - ret = 0; - } - break; - - case TEP_PRINT_NULL: - case TEP_PRINT_FIELD ... TEP_PRINT_SYMBOL: - case TEP_PRINT_STRING: - case TEP_PRINT_BSTRING: - case TEP_PRINT_BITMASK: - default: - do_warning("invalid eval type %d", arg->type); - ret = 0; - - } - return ret; -} - -static char *arg_eval (struct tep_print_arg *arg) -{ - long long val; - static char buf[24]; - - switch (arg->type) { - case TEP_PRINT_ATOM: - return arg->atom.atom; - case TEP_PRINT_TYPE: - return arg_eval(arg->typecast.item); - case TEP_PRINT_OP: - if (!arg_num_eval(arg, &val)) - break; - sprintf(buf, "%lld", val); - return buf; - - case TEP_PRINT_NULL: - case TEP_PRINT_FIELD ... TEP_PRINT_SYMBOL: - case TEP_PRINT_STRING: - case TEP_PRINT_BSTRING: - case TEP_PRINT_BITMASK: - default: - do_warning("invalid eval type %d", arg->type); - break; - } - - return NULL; -} - -static enum tep_event_type -process_fields(struct tep_event *event, struct tep_print_flag_sym **list, char **tok) -{ - enum tep_event_type type; - struct tep_print_arg *arg = NULL; - struct tep_print_flag_sym *field; - char *token = *tok; - char *value; - - do { - free_token(token); - type = read_token_item(&token); - if (test_type_token(type, token, TEP_EVENT_OP, "{")) - break; - - arg = alloc_arg(); - if (!arg) - goto out_free; - - free_token(token); - type = process_arg(event, arg, &token); - - if (type == TEP_EVENT_OP) - type = process_op(event, arg, &token); - - if (type == TEP_EVENT_ERROR) - goto out_free; - - if (test_type_token(type, token, TEP_EVENT_DELIM, ",")) - goto out_free; - - field = calloc(1, sizeof(*field)); - if (!field) - goto out_free; - - value = arg_eval(arg); - if (value == NULL) - goto out_free_field; - field->value = strdup(value); - if (field->value == NULL) - goto out_free_field; - - free_arg(arg); - arg = alloc_arg(); - if (!arg) - goto out_free; - - free_token(token); - type = process_arg(event, arg, &token); - if (test_type_token(type, token, TEP_EVENT_OP, "}")) - goto out_free_field; - - value = arg_eval(arg); - if (value == NULL) - goto out_free_field; - field->str = strdup(value); - if (field->str == NULL) - goto out_free_field; - free_arg(arg); - arg = NULL; - - *list = field; - list = &field->next; - - free_token(token); - type = read_token_item(&token); - } while (type == TEP_EVENT_DELIM && strcmp(token, ",") == 0); - - *tok = token; - return type; - -out_free_field: - free_flag_sym(field); -out_free: - free_arg(arg); - free_token(token); - *tok = NULL; - - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_flags(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - struct tep_print_arg *field; - enum tep_event_type type; - char *token = NULL; - - memset(arg, 0, sizeof(*arg)); - arg->type = TEP_PRINT_FLAGS; - - field = alloc_arg(); - if (!field) { - do_warning_event(event, "%s: not enough memory!", __func__); - goto out_free; - } - - type = process_field_arg(event, field, &token); - - /* Handle operations in the first argument */ - while (type == TEP_EVENT_OP) - type = process_op(event, field, &token); - - if (test_type_token(type, token, TEP_EVENT_DELIM, ",")) - goto out_free_field; - free_token(token); - - arg->flags.field = field; - - type = read_token_item(&token); - if (event_item_type(type)) { - arg->flags.delim = token; - type = read_token_item(&token); - } - - if (test_type_token(type, token, TEP_EVENT_DELIM, ",")) - goto out_free; - - type = process_fields(event, &arg->flags.flags, &token); - if (test_type_token(type, token, TEP_EVENT_DELIM, ")")) - goto out_free; - - free_token(token); - type = read_token_item(tok); - return type; - -out_free_field: - free_arg(field); -out_free: - free_token(token); - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_symbols(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - struct tep_print_arg *field; - enum tep_event_type type; - char *token = NULL; - - memset(arg, 0, sizeof(*arg)); - arg->type = TEP_PRINT_SYMBOL; - - field = alloc_arg(); - if (!field) { - do_warning_event(event, "%s: not enough memory!", __func__); - goto out_free; - } - - type = process_field_arg(event, field, &token); - - if (test_type_token(type, token, TEP_EVENT_DELIM, ",")) - goto out_free_field; - - arg->symbol.field = field; - - type = process_fields(event, &arg->symbol.symbols, &token); - if (test_type_token(type, token, TEP_EVENT_DELIM, ")")) - goto out_free; - - free_token(token); - type = read_token_item(tok); - return type; - -out_free_field: - free_arg(field); -out_free: - free_token(token); - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_hex_common(struct tep_event *event, struct tep_print_arg *arg, - char **tok, enum tep_print_arg_type type) -{ - memset(arg, 0, sizeof(*arg)); - arg->type = type; - - if (alloc_and_process_delim(event, ",", &arg->hex.field)) - goto out; - - if (alloc_and_process_delim(event, ")", &arg->hex.size)) - goto free_field; - - return read_token_item(tok); - -free_field: - free_arg(arg->hex.field); - arg->hex.field = NULL; -out: - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_hex(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - return process_hex_common(event, arg, tok, TEP_PRINT_HEX); -} - -static enum tep_event_type -process_hex_str(struct tep_event *event, struct tep_print_arg *arg, - char **tok) -{ - return process_hex_common(event, arg, tok, TEP_PRINT_HEX_STR); -} - -static enum tep_event_type -process_int_array(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - memset(arg, 0, sizeof(*arg)); - arg->type = TEP_PRINT_INT_ARRAY; - - if (alloc_and_process_delim(event, ",", &arg->int_array.field)) - goto out; - - if (alloc_and_process_delim(event, ",", &arg->int_array.count)) - goto free_field; - - if (alloc_and_process_delim(event, ")", &arg->int_array.el_size)) - goto free_size; - - return read_token_item(tok); - -free_size: - free_arg(arg->int_array.count); - arg->int_array.count = NULL; -free_field: - free_arg(arg->int_array.field); - arg->int_array.field = NULL; -out: - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_dynamic_array(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - struct tep_format_field *field; - enum tep_event_type type; - char *token; - - memset(arg, 0, sizeof(*arg)); - arg->type = TEP_PRINT_DYNAMIC_ARRAY; - - /* - * The item within the parenthesis is another field that holds - * the index into where the array starts. - */ - type = read_token(&token); - *tok = token; - if (type != TEP_EVENT_ITEM) - goto out_free; - - /* Find the field */ - - field = tep_find_field(event, token); - if (!field) - goto out_free; - - arg->dynarray.field = field; - arg->dynarray.index = 0; - - if (read_expected(TEP_EVENT_DELIM, ")") < 0) - goto out_free; - - free_token(token); - type = read_token_item(&token); - *tok = token; - if (type != TEP_EVENT_OP || strcmp(token, "[") != 0) - return type; - - free_token(token); - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s: not enough memory!", __func__); - *tok = NULL; - return TEP_EVENT_ERROR; - } - - type = process_arg(event, arg, &token); - if (type == TEP_EVENT_ERROR) - goto out_free_arg; - - if (!test_type_token(type, token, TEP_EVENT_OP, "]")) - goto out_free_arg; - - free_token(token); - type = read_token_item(tok); - return type; - - out_free_arg: - free_arg(arg); - out_free: - free_token(token); - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_dynamic_array_len(struct tep_event *event, struct tep_print_arg *arg, - char **tok) -{ - struct tep_format_field *field; - enum tep_event_type type; - char *token; - - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto out_free; - - arg->type = TEP_PRINT_DYNAMIC_ARRAY_LEN; - - /* Find the field */ - field = tep_find_field(event, token); - if (!field) - goto out_free; - - arg->dynarray.field = field; - arg->dynarray.index = 0; - - if (read_expected(TEP_EVENT_DELIM, ")") < 0) - goto out_err; - - free_token(token); - type = read_token(&token); - *tok = token; - - return type; - - out_free: - free_token(token); - out_err: - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_paren(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - struct tep_print_arg *item_arg; - enum tep_event_type type; - char *token; - - type = process_arg(event, arg, &token); - - if (type == TEP_EVENT_ERROR) - goto out_free; - - if (type == TEP_EVENT_OP) - type = process_op(event, arg, &token); - - if (type == TEP_EVENT_ERROR) - goto out_free; - - if (test_type_token(type, token, TEP_EVENT_DELIM, ")")) - goto out_free; - - free_token(token); - type = read_token_item(&token); - - /* - * If the next token is an item or another open paren, then - * this was a typecast. - */ - if (event_item_type(type) || - (type == TEP_EVENT_DELIM && strcmp(token, "(") == 0)) { - - /* make this a typecast and contine */ - - /* prevous must be an atom */ - if (arg->type != TEP_PRINT_ATOM) { - do_warning_event(event, "previous needed to be TEP_PRINT_ATOM"); - goto out_free; - } - - item_arg = alloc_arg(); - if (!item_arg) { - do_warning_event(event, "%s: not enough memory!", - __func__); - goto out_free; - } - - arg->type = TEP_PRINT_TYPE; - arg->typecast.type = arg->atom.atom; - arg->typecast.item = item_arg; - type = process_arg_token(event, item_arg, &token, type); - - } - - *tok = token; - return type; - - out_free: - free_token(token); - *tok = NULL; - return TEP_EVENT_ERROR; -} - - -static enum tep_event_type -process_str(struct tep_event *event __maybe_unused, struct tep_print_arg *arg, - char **tok) -{ - enum tep_event_type type; - char *token; - - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto out_free; - - arg->type = TEP_PRINT_STRING; - arg->string.string = token; - arg->string.field = NULL; - - if (read_expected(TEP_EVENT_DELIM, ")") < 0) - goto out_err; - - type = read_token(&token); - *tok = token; - - return type; - - out_free: - free_token(token); - out_err: - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_bitmask(struct tep_event *event __maybe_unused, struct tep_print_arg *arg, - char **tok) -{ - enum tep_event_type type; - char *token; - - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto out_free; - - arg->type = TEP_PRINT_BITMASK; - arg->bitmask.bitmask = token; - arg->bitmask.field = NULL; - - if (read_expected(TEP_EVENT_DELIM, ")") < 0) - goto out_err; - - type = read_token(&token); - *tok = token; - - return type; - - out_free: - free_token(token); - out_err: - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static struct tep_function_handler * -find_func_handler(struct tep_handle *tep, char *func_name) -{ - struct tep_function_handler *func; - - if (!tep) - return NULL; - - for (func = tep->func_handlers; func; func = func->next) { - if (strcmp(func->name, func_name) == 0) - break; - } - - return func; -} - -static void remove_func_handler(struct tep_handle *tep, char *func_name) -{ - struct tep_function_handler *func; - struct tep_function_handler **next; - - next = &tep->func_handlers; - while ((func = *next)) { - if (strcmp(func->name, func_name) == 0) { - *next = func->next; - free_func_handle(func); - break; - } - next = &func->next; - } -} - -static enum tep_event_type -process_func_handler(struct tep_event *event, struct tep_function_handler *func, - struct tep_print_arg *arg, char **tok) -{ - struct tep_print_arg **next_arg; - struct tep_print_arg *farg; - enum tep_event_type type; - char *token; - int i; - - arg->type = TEP_PRINT_FUNC; - arg->func.func = func; - - *tok = NULL; - - next_arg = &(arg->func.args); - for (i = 0; i < func->nr_args; i++) { - farg = alloc_arg(); - if (!farg) { - do_warning_event(event, "%s: not enough memory!", - __func__); - return TEP_EVENT_ERROR; - } - - type = process_arg(event, farg, &token); - if (i < (func->nr_args - 1)) { - if (type != TEP_EVENT_DELIM || strcmp(token, ",") != 0) { - do_warning_event(event, - "Error: function '%s()' expects %d arguments but event %s only uses %d", - func->name, func->nr_args, - event->name, i + 1); - goto err; - } - } else { - if (type != TEP_EVENT_DELIM || strcmp(token, ")") != 0) { - do_warning_event(event, - "Error: function '%s()' only expects %d arguments but event %s has more", - func->name, func->nr_args, event->name); - goto err; - } - } - - *next_arg = farg; - next_arg = &(farg->next); - free_token(token); - } - - type = read_token(&token); - *tok = token; - - return type; - -err: - free_arg(farg); - free_token(token); - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_builtin_expect(struct tep_event *event, struct tep_print_arg *arg, char **tok) -{ - enum tep_event_type type; - char *token = NULL; - - /* Handle __builtin_expect( cond, #) */ - type = process_arg(event, arg, &token); - - if (type != TEP_EVENT_DELIM || token[0] != ',') - goto out_free; - - free_token(token); - - /* We don't care what the second parameter is of the __builtin_expect() */ - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto out_free; - - if (read_expected(TEP_EVENT_DELIM, ")") < 0) - goto out_free; - - free_token(token); - type = read_token_item(tok); - return type; - -out_free: - free_token(token); - *tok = NULL; - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_function(struct tep_event *event, struct tep_print_arg *arg, - char *token, char **tok) -{ - struct tep_function_handler *func; - - if (strcmp(token, "__print_flags") == 0) { - free_token(token); - is_flag_field = 1; - return process_flags(event, arg, tok); - } - if (strcmp(token, "__print_symbolic") == 0) { - free_token(token); - is_symbolic_field = 1; - return process_symbols(event, arg, tok); - } - if (strcmp(token, "__print_hex") == 0) { - free_token(token); - return process_hex(event, arg, tok); - } - if (strcmp(token, "__print_hex_str") == 0) { - free_token(token); - return process_hex_str(event, arg, tok); - } - if (strcmp(token, "__print_array") == 0) { - free_token(token); - return process_int_array(event, arg, tok); - } - if (strcmp(token, "__get_str") == 0 || - strcmp(token, "__get_rel_str") == 0) { - free_token(token); - return process_str(event, arg, tok); - } - if (strcmp(token, "__get_bitmask") == 0 || - strcmp(token, "__get_rel_bitmask") == 0) { - free_token(token); - return process_bitmask(event, arg, tok); - } - if (strcmp(token, "__get_dynamic_array") == 0 || - strcmp(token, "__get_rel_dynamic_array") == 0) { - free_token(token); - return process_dynamic_array(event, arg, tok); - } - if (strcmp(token, "__get_dynamic_array_len") == 0 || - strcmp(token, "__get_rel_dynamic_array_len") == 0) { - free_token(token); - return process_dynamic_array_len(event, arg, tok); - } - if (strcmp(token, "__builtin_expect") == 0) { - free_token(token); - return process_builtin_expect(event, arg, tok); - } - - func = find_func_handler(event->tep, token); - if (func) { - free_token(token); - return process_func_handler(event, func, arg, tok); - } - - do_warning_event(event, "function %s not defined", token); - free_token(token); - return TEP_EVENT_ERROR; -} - -static enum tep_event_type -process_arg_token(struct tep_event *event, struct tep_print_arg *arg, - char **tok, enum tep_event_type type) -{ - char *token; - char *atom; - - token = *tok; - - switch (type) { - case TEP_EVENT_ITEM: - if (strcmp(token, "REC") == 0) { - free_token(token); - type = process_entry(event, arg, &token); - break; - } - atom = token; - /* test the next token */ - type = read_token_item(&token); - - /* - * If the next token is a parenthesis, then this - * is a function. - */ - if (type == TEP_EVENT_DELIM && strcmp(token, "(") == 0) { - free_token(token); - token = NULL; - /* this will free atom. */ - type = process_function(event, arg, atom, &token); - break; - } - /* atoms can be more than one token long */ - while (type == TEP_EVENT_ITEM) { - int ret; - - ret = append(&atom, " ", token); - if (ret < 0) { - free(atom); - *tok = NULL; - free_token(token); - return TEP_EVENT_ERROR; - } - free_token(token); - type = read_token_item(&token); - } - - arg->type = TEP_PRINT_ATOM; - arg->atom.atom = atom; - break; - - case TEP_EVENT_DQUOTE: - case TEP_EVENT_SQUOTE: - arg->type = TEP_PRINT_ATOM; - arg->atom.atom = token; - type = read_token_item(&token); - break; - case TEP_EVENT_DELIM: - if (strcmp(token, "(") == 0) { - free_token(token); - type = process_paren(event, arg, &token); - break; - } - case TEP_EVENT_OP: - /* handle single ops */ - arg->type = TEP_PRINT_OP; - arg->op.op = token; - arg->op.left = NULL; - type = process_op(event, arg, &token); - - /* On error, the op is freed */ - if (type == TEP_EVENT_ERROR) - arg->op.op = NULL; - - /* return error type if errored */ - break; - - case TEP_EVENT_ERROR ... TEP_EVENT_NEWLINE: - default: - do_warning_event(event, "unexpected type %d", type); - return TEP_EVENT_ERROR; - } - *tok = token; - - return type; -} - -static int event_read_print_args(struct tep_event *event, struct tep_print_arg **list) -{ - enum tep_event_type type = TEP_EVENT_ERROR; - struct tep_print_arg *arg; - char *token; - int args = 0; - - do { - if (type == TEP_EVENT_NEWLINE) { - type = read_token_item(&token); - continue; - } - - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s: not enough memory!", - __func__); - return -1; - } - - type = process_arg(event, arg, &token); - - if (type == TEP_EVENT_ERROR) { - free_token(token); - free_arg(arg); - return -1; - } - - *list = arg; - args++; - - if (type == TEP_EVENT_OP) { - type = process_op(event, arg, &token); - free_token(token); - if (type == TEP_EVENT_ERROR) { - *list = NULL; - free_arg(arg); - return -1; - } - list = &arg->next; - continue; - } - - if (type == TEP_EVENT_DELIM && strcmp(token, ",") == 0) { - free_token(token); - *list = arg; - list = &arg->next; - continue; - } - break; - } while (type != TEP_EVENT_NONE); - - if (type != TEP_EVENT_NONE && type != TEP_EVENT_ERROR) - free_token(token); - - return args; -} - -static int event_read_print(struct tep_event *event) -{ - enum tep_event_type type; - char *token; - int ret; - - if (read_expected_item(TEP_EVENT_ITEM, "print") < 0) - return -1; - - if (read_expected(TEP_EVENT_ITEM, "fmt") < 0) - return -1; - - if (read_expected(TEP_EVENT_OP, ":") < 0) - return -1; - - if (read_expect_type(TEP_EVENT_DQUOTE, &token) < 0) - goto fail; - - concat: - event->print_fmt.format = token; - event->print_fmt.args = NULL; - - /* ok to have no arg */ - type = read_token_item(&token); - - if (type == TEP_EVENT_NONE) - return 0; - - /* Handle concatenation of print lines */ - if (type == TEP_EVENT_DQUOTE) { - char *cat; - - if (asprintf(&cat, "%s%s", event->print_fmt.format, token) < 0) - goto fail; - free_token(token); - free_token(event->print_fmt.format); - event->print_fmt.format = NULL; - token = cat; - goto concat; - } - - if (test_type_token(type, token, TEP_EVENT_DELIM, ",")) - goto fail; - - free_token(token); - - ret = event_read_print_args(event, &event->print_fmt.args); - if (ret < 0) - return -1; - - return ret; - - fail: - free_token(token); - return -1; -} - -/** - * tep_find_common_field - return a common field by event - * @event: handle for the event - * @name: the name of the common field to return - * - * Returns a common field from the event by the given @name. - * This only searches the common fields and not all field. - */ -struct tep_format_field * -tep_find_common_field(struct tep_event *event, const char *name) -{ - struct tep_format_field *format; - - for (format = event->format.common_fields; - format; format = format->next) { - if (strcmp(format->name, name) == 0) - break; - } - - return format; -} - -/** - * tep_find_field - find a non-common field - * @event: handle for the event - * @name: the name of the non-common field - * - * Returns a non-common field by the given @name. - * This does not search common fields. - */ -struct tep_format_field * -tep_find_field(struct tep_event *event, const char *name) -{ - struct tep_format_field *format; - - for (format = event->format.fields; - format; format = format->next) { - if (strcmp(format->name, name) == 0) - break; - } - - return format; -} - -/** - * tep_find_any_field - find any field by name - * @event: handle for the event - * @name: the name of the field - * - * Returns a field by the given @name. - * This searches the common field names first, then - * the non-common ones if a common one was not found. - */ -struct tep_format_field * -tep_find_any_field(struct tep_event *event, const char *name) -{ - struct tep_format_field *format; - - format = tep_find_common_field(event, name); - if (format) - return format; - return tep_find_field(event, name); -} - -/** - * tep_read_number - read a number from data - * @tep: a handle to the trace event parser context - * @ptr: the raw data - * @size: the size of the data that holds the number - * - * Returns the number (converted to host) from the - * raw data. - */ -unsigned long long tep_read_number(struct tep_handle *tep, - const void *ptr, int size) -{ - unsigned long long val; - - switch (size) { - case 1: - return *(unsigned char *)ptr; - case 2: - return data2host2(tep, *(unsigned short *)ptr); - case 4: - return data2host4(tep, *(unsigned int *)ptr); - case 8: - memcpy(&val, (ptr), sizeof(unsigned long long)); - return data2host8(tep, val); - default: - /* BUG! */ - return 0; - } -} - -/** - * tep_read_number_field - read a number from data - * @field: a handle to the field - * @data: the raw data to read - * @value: the value to place the number in - * - * Reads raw data according to a field offset and size, - * and translates it into @value. - * - * Returns 0 on success, -1 otherwise. - */ -int tep_read_number_field(struct tep_format_field *field, const void *data, - unsigned long long *value) -{ - if (!field) - return -1; - switch (field->size) { - case 1: - case 2: - case 4: - case 8: - *value = tep_read_number(field->event->tep, - data + field->offset, field->size); - return 0; - default: - return -1; - } -} - -static int get_common_info(struct tep_handle *tep, - const char *type, int *offset, int *size) -{ - struct tep_event *event; - struct tep_format_field *field; - - /* - * All events should have the same common elements. - * Pick any event to find where the type is; - */ - if (!tep->events) { - do_warning("no event_list!"); - return -1; - } - - event = tep->events[0]; - field = tep_find_common_field(event, type); - if (!field) - return -1; - - *offset = field->offset; - *size = field->size; - - return 0; -} - -static int __parse_common(struct tep_handle *tep, void *data, - int *size, int *offset, const char *name) -{ - int ret; - - if (!*size) { - ret = get_common_info(tep, name, offset, size); - if (ret < 0) - return ret; - } - return tep_read_number(tep, data + *offset, *size); -} - -static int trace_parse_common_type(struct tep_handle *tep, void *data) -{ - return __parse_common(tep, data, - &tep->type_size, &tep->type_offset, - "common_type"); -} - -static int parse_common_pid(struct tep_handle *tep, void *data) -{ - return __parse_common(tep, data, - &tep->pid_size, &tep->pid_offset, - "common_pid"); -} - -static int parse_common_pc(struct tep_handle *tep, void *data) -{ - return __parse_common(tep, data, - &tep->pc_size, &tep->pc_offset, - "common_preempt_count"); -} - -static int parse_common_flags(struct tep_handle *tep, void *data) -{ - return __parse_common(tep, data, - &tep->flags_size, &tep->flags_offset, - "common_flags"); -} - -static int parse_common_lock_depth(struct tep_handle *tep, void *data) -{ - return __parse_common(tep, data, - &tep->ld_size, &tep->ld_offset, - "common_lock_depth"); -} - -static int parse_common_migrate_disable(struct tep_handle *tep, void *data) -{ - return __parse_common(tep, data, - &tep->ld_size, &tep->ld_offset, - "common_migrate_disable"); -} - -static int events_id_cmp(const void *a, const void *b); - -/** - * tep_find_event - find an event by given id - * @tep: a handle to the trace event parser context - * @id: the id of the event - * - * Returns an event that has a given @id. - */ -struct tep_event *tep_find_event(struct tep_handle *tep, int id) -{ - struct tep_event **eventptr; - struct tep_event key; - struct tep_event *pkey = &key; - - /* Check cache first */ - if (tep->last_event && tep->last_event->id == id) - return tep->last_event; - - key.id = id; - - eventptr = bsearch(&pkey, tep->events, tep->nr_events, - sizeof(*tep->events), events_id_cmp); - - if (eventptr) { - tep->last_event = *eventptr; - return *eventptr; - } - - return NULL; -} - -/** - * tep_find_event_by_name - find an event by given name - * @tep: a handle to the trace event parser context - * @sys: the system name to search for - * @name: the name of the event to search for - * - * This returns an event with a given @name and under the system - * @sys. If @sys is NULL the first event with @name is returned. - */ -struct tep_event * -tep_find_event_by_name(struct tep_handle *tep, - const char *sys, const char *name) -{ - struct tep_event *event = NULL; - int i; - - if (tep->last_event && - strcmp(tep->last_event->name, name) == 0 && - (!sys || strcmp(tep->last_event->system, sys) == 0)) - return tep->last_event; - - for (i = 0; i < tep->nr_events; i++) { - event = tep->events[i]; - if (strcmp(event->name, name) == 0) { - if (!sys) - break; - if (strcmp(event->system, sys) == 0) - break; - } - } - if (i == tep->nr_events) - event = NULL; - - tep->last_event = event; - return event; -} - -static unsigned long long -eval_num_arg(void *data, int size, struct tep_event *event, struct tep_print_arg *arg) -{ - struct tep_handle *tep = event->tep; - unsigned long long val = 0; - unsigned long long left, right; - struct tep_print_arg *typearg = NULL; - struct tep_print_arg *larg; - unsigned long offset; - unsigned int field_size; - - switch (arg->type) { - case TEP_PRINT_NULL: - /* ?? */ - return 0; - case TEP_PRINT_ATOM: - return strtoull(arg->atom.atom, NULL, 0); - case TEP_PRINT_FIELD: - if (!arg->field.field) { - arg->field.field = tep_find_any_field(event, arg->field.name); - if (!arg->field.field) - goto out_warning_field; - - } - /* must be a number */ - val = tep_read_number(tep, data + arg->field.field->offset, - arg->field.field->size); - break; - case TEP_PRINT_FLAGS: - case TEP_PRINT_SYMBOL: - case TEP_PRINT_INT_ARRAY: - case TEP_PRINT_HEX: - case TEP_PRINT_HEX_STR: - break; - case TEP_PRINT_TYPE: - val = eval_num_arg(data, size, event, arg->typecast.item); - return eval_type(val, arg, 0); - case TEP_PRINT_STRING: - case TEP_PRINT_BSTRING: - case TEP_PRINT_BITMASK: - return 0; - case TEP_PRINT_FUNC: { - struct trace_seq s; - trace_seq_init(&s); - val = process_defined_func(&s, data, size, event, arg); - trace_seq_destroy(&s); - return val; - } - case TEP_PRINT_OP: - if (strcmp(arg->op.op, "[") == 0) { - /* - * Arrays are special, since we don't want - * to read the arg as is. - */ - right = eval_num_arg(data, size, event, arg->op.right); - - /* handle typecasts */ - larg = arg->op.left; - while (larg->type == TEP_PRINT_TYPE) { - if (!typearg) - typearg = larg; - larg = larg->typecast.item; - } - - /* Default to long size */ - field_size = tep->long_size; - - switch (larg->type) { - case TEP_PRINT_DYNAMIC_ARRAY: - offset = tep_read_number(tep, - data + larg->dynarray.field->offset, - larg->dynarray.field->size); - if (larg->dynarray.field->elementsize) - field_size = larg->dynarray.field->elementsize; - /* - * The actual length of the dynamic array is stored - * in the top half of the field, and the offset - * is in the bottom half of the 32 bit field. - */ - offset &= 0xffff; - offset += right; - break; - case TEP_PRINT_FIELD: - if (!larg->field.field) { - larg->field.field = - tep_find_any_field(event, larg->field.name); - if (!larg->field.field) { - arg = larg; - goto out_warning_field; - } - } - field_size = larg->field.field->elementsize; - offset = larg->field.field->offset + - right * larg->field.field->elementsize; - break; - default: - goto default_op; /* oops, all bets off */ - } - val = tep_read_number(tep, - data + offset, field_size); - if (typearg) - val = eval_type(val, typearg, 1); - break; - } else if (strcmp(arg->op.op, "?") == 0) { - left = eval_num_arg(data, size, event, arg->op.left); - arg = arg->op.right; - if (left) - val = eval_num_arg(data, size, event, arg->op.left); - else - val = eval_num_arg(data, size, event, arg->op.right); - break; - } - default_op: - left = eval_num_arg(data, size, event, arg->op.left); - right = eval_num_arg(data, size, event, arg->op.right); - switch (arg->op.op[0]) { - case '!': - switch (arg->op.op[1]) { - case 0: - val = !right; - break; - case '=': - val = left != right; - break; - default: - goto out_warning_op; - } - break; - case '~': - val = ~right; - break; - case '|': - if (arg->op.op[1]) - val = left || right; - else - val = left | right; - break; - case '&': - if (arg->op.op[1]) - val = left && right; - else - val = left & right; - break; - case '<': - switch (arg->op.op[1]) { - case 0: - val = left < right; - break; - case '<': - val = left << right; - break; - case '=': - val = left <= right; - break; - default: - goto out_warning_op; - } - break; - case '>': - switch (arg->op.op[1]) { - case 0: - val = left > right; - break; - case '>': - val = left >> right; - break; - case '=': - val = left >= right; - break; - default: - goto out_warning_op; - } - break; - case '=': - if (arg->op.op[1] != '=') - goto out_warning_op; - - val = left == right; - break; - case '-': - val = left - right; - break; - case '+': - val = left + right; - break; - case '/': - val = left / right; - break; - case '%': - val = left % right; - break; - case '*': - val = left * right; - break; - default: - goto out_warning_op; - } - break; - case TEP_PRINT_DYNAMIC_ARRAY_LEN: - offset = tep_read_number(tep, - data + arg->dynarray.field->offset, - arg->dynarray.field->size); - /* - * The total allocated length of the dynamic array is - * stored in the top half of the field, and the offset - * is in the bottom half of the 32 bit field. - */ - val = (unsigned long long)(offset >> 16); - break; - case TEP_PRINT_DYNAMIC_ARRAY: - /* Without [], we pass the address to the dynamic data */ - offset = tep_read_number(tep, - data + arg->dynarray.field->offset, - arg->dynarray.field->size); - /* - * The total allocated length of the dynamic array is - * stored in the top half of the field, and the offset - * is in the bottom half of the 32 bit field. - */ - offset &= 0xffff; - val = (unsigned long long)((unsigned long)data + offset); - break; - default: /* not sure what to do there */ - return 0; - } - return val; - -out_warning_op: - do_warning_event(event, "%s: unknown op '%s'", __func__, arg->op.op); - return 0; - -out_warning_field: - do_warning_event(event, "%s: field %s not found", - __func__, arg->field.name); - return 0; -} - -struct flag { - const char *name; - unsigned long long value; -}; - -static const struct flag flags[] = { - { "HI_SOFTIRQ", 0 }, - { "TIMER_SOFTIRQ", 1 }, - { "NET_TX_SOFTIRQ", 2 }, - { "NET_RX_SOFTIRQ", 3 }, - { "BLOCK_SOFTIRQ", 4 }, - { "IRQ_POLL_SOFTIRQ", 5 }, - { "TASKLET_SOFTIRQ", 6 }, - { "SCHED_SOFTIRQ", 7 }, - { "HRTIMER_SOFTIRQ", 8 }, - { "RCU_SOFTIRQ", 9 }, - - { "HRTIMER_NORESTART", 0 }, - { "HRTIMER_RESTART", 1 }, -}; - -static long long eval_flag(const char *flag) -{ - int i; - - /* - * Some flags in the format files do not get converted. - * If the flag is not numeric, see if it is something that - * we already know about. - */ - if (isdigit(flag[0])) - return strtoull(flag, NULL, 0); - - for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) - if (strcmp(flags[i].name, flag) == 0) - return flags[i].value; - - return -1LL; -} - -static void print_str_to_seq(struct trace_seq *s, const char *format, - int len_arg, const char *str) -{ - if (len_arg >= 0) - trace_seq_printf(s, format, len_arg, str); - else - trace_seq_printf(s, format, str); -} - -static void print_bitmask_to_seq(struct tep_handle *tep, - struct trace_seq *s, const char *format, - int len_arg, const void *data, int size) -{ - int nr_bits = size * 8; - int str_size = (nr_bits + 3) / 4; - int len = 0; - char buf[3]; - char *str; - int index; - int i; - - /* - * The kernel likes to put in commas every 32 bits, we - * can do the same. - */ - str_size += (nr_bits - 1) / 32; - - str = malloc(str_size + 1); - if (!str) { - do_warning("%s: not enough memory!", __func__); - return; - } - str[str_size] = 0; - - /* Start out with -2 for the two chars per byte */ - for (i = str_size - 2; i >= 0; i -= 2) { - /* - * data points to a bit mask of size bytes. - * In the kernel, this is an array of long words, thus - * endianness is very important. - */ - if (tep->file_bigendian) - index = size - (len + 1); - else - index = len; - - snprintf(buf, 3, "%02x", *((unsigned char *)data + index)); - memcpy(str + i, buf, 2); - len++; - if (!(len & 3) && i > 0) { - i--; - str[i] = ','; - } - } - - if (len_arg >= 0) - trace_seq_printf(s, format, len_arg, str); - else - trace_seq_printf(s, format, str); - - free(str); -} - -static void print_str_arg(struct trace_seq *s, void *data, int size, - struct tep_event *event, const char *format, - int len_arg, struct tep_print_arg *arg) -{ - struct tep_handle *tep = event->tep; - struct tep_print_flag_sym *flag; - struct tep_format_field *field; - struct printk_map *printk; - long long val, fval; - unsigned long long addr; - char *str; - unsigned char *hex; - int print; - int i, len; - - switch (arg->type) { - case TEP_PRINT_NULL: - /* ?? */ - return; - case TEP_PRINT_ATOM: - print_str_to_seq(s, format, len_arg, arg->atom.atom); - return; - case TEP_PRINT_FIELD: - field = arg->field.field; - if (!field) { - field = tep_find_any_field(event, arg->field.name); - if (!field) { - str = arg->field.name; - goto out_warning_field; - } - arg->field.field = field; - } - /* Zero sized fields, mean the rest of the data */ - len = field->size ? : size - field->offset; - - /* - * Some events pass in pointers. If this is not an array - * and the size is the same as long_size, assume that it - * is a pointer. - */ - if (!(field->flags & TEP_FIELD_IS_ARRAY) && - field->size == tep->long_size) { - - /* Handle heterogeneous recording and processing - * architectures - * - * CASE I: - * Traces recorded on 32-bit devices (32-bit - * addressing) and processed on 64-bit devices: - * In this case, only 32 bits should be read. - * - * CASE II: - * Traces recorded on 64 bit devices and processed - * on 32-bit devices: - * In this case, 64 bits must be read. - */ - addr = (tep->long_size == 8) ? - *(unsigned long long *)(data + field->offset) : - (unsigned long long)*(unsigned int *)(data + field->offset); - - /* Check if it matches a print format */ - printk = find_printk(tep, addr); - if (printk) - trace_seq_puts(s, printk->printk); - else - trace_seq_printf(s, "%llx", addr); - break; - } - str = malloc(len + 1); - if (!str) { - do_warning_event(event, "%s: not enough memory!", - __func__); - return; - } - memcpy(str, data + field->offset, len); - str[len] = 0; - print_str_to_seq(s, format, len_arg, str); - free(str); - break; - case TEP_PRINT_FLAGS: - val = eval_num_arg(data, size, event, arg->flags.field); - print = 0; - for (flag = arg->flags.flags; flag; flag = flag->next) { - fval = eval_flag(flag->value); - if (!val && fval < 0) { - print_str_to_seq(s, format, len_arg, flag->str); - break; - } - if (fval > 0 && (val & fval) == fval) { - if (print && arg->flags.delim) - trace_seq_puts(s, arg->flags.delim); - print_str_to_seq(s, format, len_arg, flag->str); - print = 1; - val &= ~fval; - } - } - if (val) { - if (print && arg->flags.delim) - trace_seq_puts(s, arg->flags.delim); - trace_seq_printf(s, "0x%llx", val); - } - break; - case TEP_PRINT_SYMBOL: - val = eval_num_arg(data, size, event, arg->symbol.field); - for (flag = arg->symbol.symbols; flag; flag = flag->next) { - fval = eval_flag(flag->value); - if (val == fval) { - print_str_to_seq(s, format, len_arg, flag->str); - break; - } - } - if (!flag) - trace_seq_printf(s, "0x%llx", val); - break; - case TEP_PRINT_HEX: - case TEP_PRINT_HEX_STR: - if (arg->hex.field->type == TEP_PRINT_DYNAMIC_ARRAY) { - unsigned long offset; - offset = tep_read_number(tep, - data + arg->hex.field->dynarray.field->offset, - arg->hex.field->dynarray.field->size); - hex = data + (offset & 0xffff); - } else { - field = arg->hex.field->field.field; - if (!field) { - str = arg->hex.field->field.name; - field = tep_find_any_field(event, str); - if (!field) - goto out_warning_field; - arg->hex.field->field.field = field; - } - hex = data + field->offset; - } - len = eval_num_arg(data, size, event, arg->hex.size); - for (i = 0; i < len; i++) { - if (i && arg->type == TEP_PRINT_HEX) - trace_seq_putc(s, ' '); - trace_seq_printf(s, "%02x", hex[i]); - } - break; - - case TEP_PRINT_INT_ARRAY: { - void *num; - int el_size; - - if (arg->int_array.field->type == TEP_PRINT_DYNAMIC_ARRAY) { - unsigned long offset; - struct tep_format_field *field = - arg->int_array.field->dynarray.field; - offset = tep_read_number(tep, - data + field->offset, - field->size); - num = data + (offset & 0xffff); - } else { - field = arg->int_array.field->field.field; - if (!field) { - str = arg->int_array.field->field.name; - field = tep_find_any_field(event, str); - if (!field) - goto out_warning_field; - arg->int_array.field->field.field = field; - } - num = data + field->offset; - } - len = eval_num_arg(data, size, event, arg->int_array.count); - el_size = eval_num_arg(data, size, event, - arg->int_array.el_size); - for (i = 0; i < len; i++) { - if (i) - trace_seq_putc(s, ' '); - - if (el_size == 1) { - trace_seq_printf(s, "%u", *(uint8_t *)num); - } else if (el_size == 2) { - trace_seq_printf(s, "%u", *(uint16_t *)num); - } else if (el_size == 4) { - trace_seq_printf(s, "%u", *(uint32_t *)num); - } else if (el_size == 8) { - trace_seq_printf(s, "%"PRIu64, *(uint64_t *)num); - } else { - trace_seq_printf(s, "BAD SIZE:%d 0x%x", - el_size, *(uint8_t *)num); - el_size = 1; - } - - num += el_size; - } - break; - } - case TEP_PRINT_TYPE: - break; - case TEP_PRINT_STRING: { - int str_offset; - - if (!arg->string.field) - arg->string.field = tep_find_any_field(event, arg->string.string); - if (!arg->string.field) - break; - - str_offset = data2host4(tep, - *(unsigned int *)(data + arg->string.field->offset)); - str_offset &= 0xffff; - if (arg->string.field->flags & TEP_FIELD_IS_RELATIVE) - str_offset += arg->string.field->offset + arg->string.field->size; - print_str_to_seq(s, format, len_arg, ((char *)data) + str_offset); - break; - } - case TEP_PRINT_BSTRING: - print_str_to_seq(s, format, len_arg, arg->string.string); - break; - case TEP_PRINT_BITMASK: { - int bitmask_offset; - int bitmask_size; - - if (!arg->bitmask.field) - arg->bitmask.field = tep_find_any_field(event, arg->bitmask.bitmask); - if (!arg->bitmask.field) - break; - bitmask_offset = data2host4(tep, - *(unsigned int *)(data + arg->bitmask.field->offset)); - bitmask_size = bitmask_offset >> 16; - bitmask_offset &= 0xffff; - if (arg->bitmask.field->flags & TEP_FIELD_IS_RELATIVE) - bitmask_offset += arg->bitmask.field->offset + arg->bitmask.field->size; - print_bitmask_to_seq(tep, s, format, len_arg, - data + bitmask_offset, bitmask_size); - break; - } - case TEP_PRINT_OP: - /* - * The only op for string should be ? : - */ - if (arg->op.op[0] != '?') - return; - val = eval_num_arg(data, size, event, arg->op.left); - if (val) - print_str_arg(s, data, size, event, - format, len_arg, arg->op.right->op.left); - else - print_str_arg(s, data, size, event, - format, len_arg, arg->op.right->op.right); - break; - case TEP_PRINT_FUNC: - process_defined_func(s, data, size, event, arg); - break; - default: - /* well... */ - break; - } - - return; - -out_warning_field: - do_warning_event(event, "%s: field %s not found", - __func__, arg->field.name); -} - -static unsigned long long -process_defined_func(struct trace_seq *s, void *data, int size, - struct tep_event *event, struct tep_print_arg *arg) -{ - struct tep_function_handler *func_handle = arg->func.func; - struct func_params *param; - unsigned long long *args; - unsigned long long ret; - struct tep_print_arg *farg; - struct trace_seq str; - struct save_str { - struct save_str *next; - char *str; - } *strings = NULL, *string; - int i; - - if (!func_handle->nr_args) { - ret = (*func_handle->func)(s, NULL); - goto out; - } - - farg = arg->func.args; - param = func_handle->params; - - ret = ULLONG_MAX; - args = malloc(sizeof(*args) * func_handle->nr_args); - if (!args) - goto out; - - for (i = 0; i < func_handle->nr_args; i++) { - switch (param->type) { - case TEP_FUNC_ARG_INT: - case TEP_FUNC_ARG_LONG: - case TEP_FUNC_ARG_PTR: - args[i] = eval_num_arg(data, size, event, farg); - break; - case TEP_FUNC_ARG_STRING: - trace_seq_init(&str); - print_str_arg(&str, data, size, event, "%s", -1, farg); - trace_seq_terminate(&str); - string = malloc(sizeof(*string)); - if (!string) { - do_warning_event(event, "%s(%d): malloc str", - __func__, __LINE__); - goto out_free; - } - string->next = strings; - string->str = strdup(str.buffer); - if (!string->str) { - free(string); - do_warning_event(event, "%s(%d): malloc str", - __func__, __LINE__); - goto out_free; - } - args[i] = (uintptr_t)string->str; - strings = string; - trace_seq_destroy(&str); - break; - default: - /* - * Something went totally wrong, this is not - * an input error, something in this code broke. - */ - do_warning_event(event, "Unexpected end of arguments\n"); - goto out_free; - } - farg = farg->next; - param = param->next; - } - - ret = (*func_handle->func)(s, args); -out_free: - free(args); - while (strings) { - string = strings; - strings = string->next; - free(string->str); - free(string); - } - - out: - /* TBD : handle return type here */ - return ret; -} - -static void free_args(struct tep_print_arg *args) -{ - struct tep_print_arg *next; - - while (args) { - next = args->next; - - free_arg(args); - args = next; - } -} - -static struct tep_print_arg *make_bprint_args(char *fmt, void *data, int size, struct tep_event *event) -{ - struct tep_handle *tep = event->tep; - struct tep_format_field *field, *ip_field; - struct tep_print_arg *args, *arg, **next; - unsigned long long ip, val; - char *ptr; - void *bptr; - int vsize = 0; - - field = tep->bprint_buf_field; - ip_field = tep->bprint_ip_field; - - if (!field) { - field = tep_find_field(event, "buf"); - if (!field) { - do_warning_event(event, "can't find buffer field for binary printk"); - return NULL; - } - ip_field = tep_find_field(event, "ip"); - if (!ip_field) { - do_warning_event(event, "can't find ip field for binary printk"); - return NULL; - } - tep->bprint_buf_field = field; - tep->bprint_ip_field = ip_field; - } - - ip = tep_read_number(tep, data + ip_field->offset, ip_field->size); - - /* - * The first arg is the IP pointer. - */ - args = alloc_arg(); - if (!args) { - do_warning_event(event, "%s(%d): not enough memory!", - __func__, __LINE__); - return NULL; - } - arg = args; - arg->next = NULL; - next = &arg->next; - - arg->type = TEP_PRINT_ATOM; - - if (asprintf(&arg->atom.atom, "%lld", ip) < 0) - goto out_free; - - /* skip the first "%ps: " */ - for (ptr = fmt + 5, bptr = data + field->offset; - bptr < data + size && *ptr; ptr++) { - int ls = 0; - - if (*ptr == '%') { - process_again: - ptr++; - switch (*ptr) { - case '%': - break; - case 'l': - ls++; - goto process_again; - case 'L': - ls = 2; - goto process_again; - case '0' ... '9': - goto process_again; - case '.': - goto process_again; - case 'z': - case 'Z': - ls = 1; - goto process_again; - case 'p': - ls = 1; - if (isalnum(ptr[1])) { - ptr++; - /* Check for special pointers */ - switch (*ptr) { - case 's': - case 'S': - case 'x': - break; - case 'f': - case 'F': - /* - * Pre-5.5 kernels use %pf and - * %pF for printing symbols - * while kernels since 5.5 use - * %pfw for fwnodes. So check - * %p[fF] isn't followed by 'w'. - */ - if (ptr[1] != 'w') - break; - /* fall through */ - default: - /* - * Older kernels do not process - * dereferenced pointers. - * Only process if the pointer - * value is a printable. - */ - if (isprint(*(char *)bptr)) - goto process_string; - } - } - /* fall through */ - case 'd': - case 'u': - case 'i': - case 'x': - case 'X': - case 'o': - switch (ls) { - case 0: - vsize = 4; - break; - case 1: - vsize = tep->long_size; - break; - case 2: - vsize = 8; - break; - default: - vsize = ls; /* ? */ - break; - } - /* fall through */ - case '*': - if (*ptr == '*') - vsize = 4; - - /* the pointers are always 4 bytes aligned */ - bptr = (void *)(((unsigned long)bptr + 3) & - ~3); - val = tep_read_number(tep, bptr, vsize); - bptr += vsize; - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s(%d): not enough memory!", - __func__, __LINE__); - goto out_free; - } - arg->next = NULL; - arg->type = TEP_PRINT_ATOM; - if (asprintf(&arg->atom.atom, "%lld", val) < 0) { - free(arg); - goto out_free; - } - *next = arg; - next = &arg->next; - /* - * The '*' case means that an arg is used as the length. - * We need to continue to figure out for what. - */ - if (*ptr == '*') - goto process_again; - - break; - case 's': - process_string: - arg = alloc_arg(); - if (!arg) { - do_warning_event(event, "%s(%d): not enough memory!", - __func__, __LINE__); - goto out_free; - } - arg->next = NULL; - arg->type = TEP_PRINT_BSTRING; - arg->string.string = strdup(bptr); - if (!arg->string.string) - goto out_free; - bptr += strlen(bptr) + 1; - *next = arg; - next = &arg->next; - default: - break; - } - } - } - - return args; - -out_free: - free_args(args); - return NULL; -} - -static char * -get_bprint_format(void *data, int size __maybe_unused, - struct tep_event *event) -{ - struct tep_handle *tep = event->tep; - unsigned long long addr; - struct tep_format_field *field; - struct printk_map *printk; - char *format; - - field = tep->bprint_fmt_field; - - if (!field) { - field = tep_find_field(event, "fmt"); - if (!field) { - do_warning_event(event, "can't find format field for binary printk"); - return NULL; - } - tep->bprint_fmt_field = field; - } - - addr = tep_read_number(tep, data + field->offset, field->size); - - printk = find_printk(tep, addr); - if (!printk) { - if (asprintf(&format, "%%ps: (NO FORMAT FOUND at %llx)\n", addr) < 0) - return NULL; - return format; - } - - if (asprintf(&format, "%s: %s", "%ps", printk->printk) < 0) - return NULL; - - return format; -} - -static int print_mac_arg(struct trace_seq *s, const char *format, - void *data, int size, struct tep_event *event, - struct tep_print_arg *arg) -{ - const char *fmt = "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x"; - bool reverse = false; - unsigned char *buf; - int ret = 0; - - if (arg->type == TEP_PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return 0; - } - - if (arg->type != TEP_PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", - arg->type); - return 0; - } - - if (format[0] == 'm') { - fmt = "%.2x%.2x%.2x%.2x%.2x%.2x"; - } else if (format[0] == 'M' && format[1] == 'F') { - fmt = "%.2x-%.2x-%.2x-%.2x-%.2x-%.2x"; - ret++; - } - if (format[1] == 'R') { - reverse = true; - ret++; - } - - if (!arg->field.field) { - arg->field.field = - tep_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning_event(event, "%s: field %s not found", - __func__, arg->field.name); - return ret; - } - } - if (arg->field.field->size != 6) { - trace_seq_printf(s, "INVALIDMAC"); - return ret; - } - - buf = data + arg->field.field->offset; - if (reverse) - trace_seq_printf(s, fmt, buf[5], buf[4], buf[3], buf[2], buf[1], buf[0]); - else - trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]); - - return ret; -} - -static int parse_ip4_print_args(struct tep_handle *tep, - const char *ptr, bool *reverse) -{ - int ret = 0; - - *reverse = false; - - /* hnbl */ - switch (*ptr) { - case 'h': - if (tep->file_bigendian) - *reverse = false; - else - *reverse = true; - ret++; - break; - case 'l': - *reverse = true; - ret++; - break; - case 'n': - case 'b': - ret++; - /* fall through */ - default: - *reverse = false; - break; - } - - return ret; -} - -static void print_ip4_addr(struct trace_seq *s, char i, bool reverse, unsigned char *buf) -{ - const char *fmt; - - if (i == 'i') - fmt = "%03d.%03d.%03d.%03d"; - else - fmt = "%d.%d.%d.%d"; - - if (reverse) - trace_seq_printf(s, fmt, buf[3], buf[2], buf[1], buf[0]); - else - trace_seq_printf(s, fmt, buf[0], buf[1], buf[2], buf[3]); - -} - -static inline bool ipv6_addr_v4mapped(const struct in6_addr *a) -{ - return ((unsigned long)(a->s6_addr32[0] | a->s6_addr32[1]) | - (unsigned long)(a->s6_addr32[2] ^ htonl(0x0000ffff))) == 0UL; -} - -static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) -{ - return (addr->s6_addr32[2] | htonl(0x02000000)) == htonl(0x02005EFE); -} - -static void print_ip6c_addr(struct trace_seq *s, unsigned char *addr) -{ - int i, j, range; - unsigned char zerolength[8]; - int longest = 1; - int colonpos = -1; - uint16_t word; - uint8_t hi, lo; - bool needcolon = false; - bool useIPv4; - struct in6_addr in6; - - memcpy(&in6, addr, sizeof(struct in6_addr)); - - useIPv4 = ipv6_addr_v4mapped(&in6) || ipv6_addr_is_isatap(&in6); - - memset(zerolength, 0, sizeof(zerolength)); - - if (useIPv4) - range = 6; - else - range = 8; - - /* find position of longest 0 run */ - for (i = 0; i < range; i++) { - for (j = i; j < range; j++) { - if (in6.s6_addr16[j] != 0) - break; - zerolength[i]++; - } - } - for (i = 0; i < range; i++) { - if (zerolength[i] > longest) { - longest = zerolength[i]; - colonpos = i; - } - } - if (longest == 1) /* don't compress a single 0 */ - colonpos = -1; - - /* emit address */ - for (i = 0; i < range; i++) { - if (i == colonpos) { - if (needcolon || i == 0) - trace_seq_printf(s, ":"); - trace_seq_printf(s, ":"); - needcolon = false; - i += longest - 1; - continue; - } - if (needcolon) { - trace_seq_printf(s, ":"); - needcolon = false; - } - /* hex u16 without leading 0s */ - word = ntohs(in6.s6_addr16[i]); - hi = word >> 8; - lo = word & 0xff; - if (hi) - trace_seq_printf(s, "%x%02x", hi, lo); - else - trace_seq_printf(s, "%x", lo); - - needcolon = true; - } - - if (useIPv4) { - if (needcolon) - trace_seq_printf(s, ":"); - print_ip4_addr(s, 'I', false, &in6.s6_addr[12]); - } - - return; -} - -static void print_ip6_addr(struct trace_seq *s, char i, unsigned char *buf) -{ - int j; - - for (j = 0; j < 16; j += 2) { - trace_seq_printf(s, "%02x%02x", buf[j], buf[j+1]); - if (i == 'I' && j < 14) - trace_seq_printf(s, ":"); - } -} - -/* - * %pi4 print an IPv4 address with leading zeros - * %pI4 print an IPv4 address without leading zeros - * %pi6 print an IPv6 address without colons - * %pI6 print an IPv6 address with colons - * %pI6c print an IPv6 address in compressed form with colons - * %pISpc print an IP address based on sockaddr; p adds port. - */ -static int print_ipv4_arg(struct trace_seq *s, const char *ptr, char i, - void *data, int size, struct tep_event *event, - struct tep_print_arg *arg) -{ - bool reverse = false; - unsigned char *buf; - int ret; - - ret = parse_ip4_print_args(event->tep, ptr, &reverse); - - if (arg->type == TEP_PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return ret; - } - - if (arg->type != TEP_PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); - return ret; - } - - if (!arg->field.field) { - arg->field.field = - tep_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning("%s: field %s not found", - __func__, arg->field.name); - return ret; - } - } - - buf = data + arg->field.field->offset; - - if (arg->field.field->size != 4) { - trace_seq_printf(s, "INVALIDIPv4"); - return ret; - } - - print_ip4_addr(s, i, reverse, buf); - return ret; - -} - -static int print_ipv6_arg(struct trace_seq *s, const char *ptr, char i, - void *data, int size, struct tep_event *event, - struct tep_print_arg *arg) -{ - char have_c = 0; - unsigned char *buf; - int rc = 0; - - /* pI6c */ - if (i == 'I' && *ptr == 'c') { - have_c = 1; - ptr++; - rc++; - } - - if (arg->type == TEP_PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return rc; - } - - if (arg->type != TEP_PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); - return rc; - } - - if (!arg->field.field) { - arg->field.field = - tep_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning("%s: field %s not found", - __func__, arg->field.name); - return rc; - } - } - - buf = data + arg->field.field->offset; - - if (arg->field.field->size != 16) { - trace_seq_printf(s, "INVALIDIPv6"); - return rc; - } - - if (have_c) - print_ip6c_addr(s, buf); - else - print_ip6_addr(s, i, buf); - - return rc; -} - -static int print_ipsa_arg(struct trace_seq *s, const char *ptr, char i, - void *data, int size, struct tep_event *event, - struct tep_print_arg *arg) -{ - char have_c = 0, have_p = 0; - unsigned char *buf; - struct sockaddr_storage *sa; - bool reverse = false; - int rc = 0; - int ret; - - /* pISpc */ - if (i == 'I') { - if (*ptr == 'p') { - have_p = 1; - ptr++; - rc++; - } - if (*ptr == 'c') { - have_c = 1; - ptr++; - rc++; - } - } - ret = parse_ip4_print_args(event->tep, ptr, &reverse); - ptr += ret; - rc += ret; - - if (arg->type == TEP_PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return rc; - } - - if (arg->type != TEP_PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); - return rc; - } - - if (!arg->field.field) { - arg->field.field = - tep_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning("%s: field %s not found", - __func__, arg->field.name); - return rc; - } - } - - sa = (struct sockaddr_storage *) (data + arg->field.field->offset); - - if (sa->ss_family == AF_INET) { - struct sockaddr_in *sa4 = (struct sockaddr_in *) sa; - - if (arg->field.field->size < sizeof(struct sockaddr_in)) { - trace_seq_printf(s, "INVALIDIPv4"); - return rc; - } - - print_ip4_addr(s, i, reverse, (unsigned char *) &sa4->sin_addr); - if (have_p) - trace_seq_printf(s, ":%d", ntohs(sa4->sin_port)); - - - } else if (sa->ss_family == AF_INET6) { - struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa; - - if (arg->field.field->size < sizeof(struct sockaddr_in6)) { - trace_seq_printf(s, "INVALIDIPv6"); - return rc; - } - - if (have_p) - trace_seq_printf(s, "["); - - buf = (unsigned char *) &sa6->sin6_addr; - if (have_c) - print_ip6c_addr(s, buf); - else - print_ip6_addr(s, i, buf); - - if (have_p) - trace_seq_printf(s, "]:%d", ntohs(sa6->sin6_port)); - } - - return rc; -} - -static int print_ip_arg(struct trace_seq *s, const char *ptr, - void *data, int size, struct tep_event *event, - struct tep_print_arg *arg) -{ - char i = *ptr; /* 'i' or 'I' */ - int rc = 1; - - /* IP version */ - ptr++; - - switch (*ptr) { - case '4': - rc += print_ipv4_arg(s, ptr + 1, i, data, size, event, arg); - break; - case '6': - rc += print_ipv6_arg(s, ptr + 1, i, data, size, event, arg); - break; - case 'S': - rc += print_ipsa_arg(s, ptr + 1, i, data, size, event, arg); - break; - default: - return 0; - } - - return rc; -} - -static const int guid_index[16] = {3, 2, 1, 0, 5, 4, 7, 6, 8, 9, 10, 11, 12, 13, 14, 15}; -static const int uuid_index[16] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}; - -static int print_uuid_arg(struct trace_seq *s, const char *ptr, - void *data, int size, struct tep_event *event, - struct tep_print_arg *arg) -{ - const int *index = uuid_index; - char *format = "%02x"; - int ret = 0; - char *buf; - int i; - - switch (*(ptr + 1)) { - case 'L': - format = "%02X"; - /* fall through */ - case 'l': - index = guid_index; - ret++; - break; - case 'B': - format = "%02X"; - /* fall through */ - case 'b': - ret++; - break; - } - - if (arg->type == TEP_PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return ret; - } - - if (arg->type != TEP_PRINT_FIELD) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); - return ret; - } - - if (!arg->field.field) { - arg->field.field = - tep_find_any_field(event, arg->field.name); - if (!arg->field.field) { - do_warning("%s: field %s not found", - __func__, arg->field.name); - return ret; - } - } - - if (arg->field.field->size != 16) { - trace_seq_printf(s, "INVALIDUUID"); - return ret; - } - - buf = data + arg->field.field->offset; - - for (i = 0; i < 16; i++) { - trace_seq_printf(s, format, buf[index[i]] & 0xff); - switch (i) { - case 3: - case 5: - case 7: - case 9: - trace_seq_printf(s, "-"); - break; - } - } - - return ret; -} - -static int print_raw_buff_arg(struct trace_seq *s, const char *ptr, - void *data, int size, struct tep_event *event, - struct tep_print_arg *arg, int print_len) -{ - int plen = print_len; - char *delim = " "; - int ret = 0; - char *buf; - int i; - unsigned long offset; - int arr_len; - - switch (*(ptr + 1)) { - case 'C': - delim = ":"; - ret++; - break; - case 'D': - delim = "-"; - ret++; - break; - case 'N': - delim = ""; - ret++; - break; - } - - if (arg->type == TEP_PRINT_FUNC) { - process_defined_func(s, data, size, event, arg); - return ret; - } - - if (arg->type != TEP_PRINT_DYNAMIC_ARRAY) { - trace_seq_printf(s, "ARG TYPE NOT FIELD BUT %d", arg->type); - return ret; - } - - offset = tep_read_number(event->tep, - data + arg->dynarray.field->offset, - arg->dynarray.field->size); - arr_len = (unsigned long long)(offset >> 16); - buf = data + (offset & 0xffff); - - if (arr_len < plen) - plen = arr_len; - - if (plen < 1) - return ret; - - trace_seq_printf(s, "%02x", buf[0] & 0xff); - for (i = 1; i < plen; i++) - trace_seq_printf(s, "%s%02x", delim, buf[i] & 0xff); - - return ret; -} - -static int is_printable_array(char *p, unsigned int len) -{ - unsigned int i; - - for (i = 0; i < len && p[i]; i++) - if (!isprint(p[i]) && !isspace(p[i])) - return 0; - return 1; -} - -void tep_print_field(struct trace_seq *s, void *data, - struct tep_format_field *field) -{ - unsigned long long val; - unsigned int offset, len, i; - struct tep_handle *tep = field->event->tep; - - if (field->flags & TEP_FIELD_IS_ARRAY) { - offset = field->offset; - len = field->size; - if (field->flags & TEP_FIELD_IS_DYNAMIC) { - val = tep_read_number(tep, data + offset, len); - offset = val; - len = offset >> 16; - offset &= 0xffff; - if (field->flags & TEP_FIELD_IS_RELATIVE) - offset += field->offset + field->size; - } - if (field->flags & TEP_FIELD_IS_STRING && - is_printable_array(data + offset, len)) { - trace_seq_printf(s, "%s", (char *)data + offset); - } else { - trace_seq_puts(s, "ARRAY["); - for (i = 0; i < len; i++) { - if (i) - trace_seq_puts(s, ", "); - trace_seq_printf(s, "%02x", - *((unsigned char *)data + offset + i)); - } - trace_seq_putc(s, ']'); - field->flags &= ~TEP_FIELD_IS_STRING; - } - } else { - val = tep_read_number(tep, data + field->offset, - field->size); - if (field->flags & TEP_FIELD_IS_POINTER) { - trace_seq_printf(s, "0x%llx", val); - } else if (field->flags & TEP_FIELD_IS_SIGNED) { - switch (field->size) { - case 4: - /* - * If field is long then print it in hex. - * A long usually stores pointers. - */ - if (field->flags & TEP_FIELD_IS_LONG) - trace_seq_printf(s, "0x%x", (int)val); - else - trace_seq_printf(s, "%d", (int)val); - break; - case 2: - trace_seq_printf(s, "%2d", (short)val); - break; - case 1: - trace_seq_printf(s, "%1d", (char)val); - break; - default: - trace_seq_printf(s, "%lld", val); - } - } else { - if (field->flags & TEP_FIELD_IS_LONG) - trace_seq_printf(s, "0x%llx", val); - else - trace_seq_printf(s, "%llu", val); - } - } -} - -void tep_print_fields(struct trace_seq *s, void *data, - int size __maybe_unused, struct tep_event *event) -{ - struct tep_format_field *field; - - field = event->format.fields; - while (field) { - trace_seq_printf(s, " %s=", field->name); - tep_print_field(s, data, field); - field = field->next; - } -} - -static int print_function(struct trace_seq *s, const char *format, - void *data, int size, struct tep_event *event, - struct tep_print_arg *arg) -{ - struct func_map *func; - unsigned long long val; - - val = eval_num_arg(data, size, event, arg); - func = find_func(event->tep, val); - if (func) { - trace_seq_puts(s, func->func); - if (*format == 'F' || *format == 'S') - trace_seq_printf(s, "+0x%llx", val - func->addr); - } else { - if (event->tep->long_size == 4) - trace_seq_printf(s, "0x%lx", (long)val); - else - trace_seq_printf(s, "0x%llx", (long long)val); - } - - return 0; -} - -static int print_arg_pointer(struct trace_seq *s, const char *format, int plen, - void *data, int size, - struct tep_event *event, struct tep_print_arg *arg) -{ - unsigned long long val; - int ret = 1; - - if (arg->type == TEP_PRINT_BSTRING) { - trace_seq_puts(s, arg->string.string); - return 0; - } - while (*format) { - if (*format == 'p') { - format++; - break; - } - format++; - } - - switch (*format) { - case 'F': - case 'f': - case 'S': - case 's': - ret += print_function(s, format, data, size, event, arg); - break; - case 'M': - case 'm': - ret += print_mac_arg(s, format, data, size, event, arg); - break; - case 'I': - case 'i': - ret += print_ip_arg(s, format, data, size, event, arg); - break; - case 'U': - ret += print_uuid_arg(s, format, data, size, event, arg); - break; - case 'h': - ret += print_raw_buff_arg(s, format, data, size, event, arg, plen); - break; - default: - ret = 0; - val = eval_num_arg(data, size, event, arg); - trace_seq_printf(s, "%p", (void *)(intptr_t)val); - break; - } - - return ret; - -} - -static int print_arg_number(struct trace_seq *s, const char *format, int plen, - void *data, int size, int ls, - struct tep_event *event, struct tep_print_arg *arg) -{ - unsigned long long val; - - val = eval_num_arg(data, size, event, arg); - - switch (ls) { - case -2: - if (plen >= 0) - trace_seq_printf(s, format, plen, (char)val); - else - trace_seq_printf(s, format, (char)val); - break; - case -1: - if (plen >= 0) - trace_seq_printf(s, format, plen, (short)val); - else - trace_seq_printf(s, format, (short)val); - break; - case 0: - if (plen >= 0) - trace_seq_printf(s, format, plen, (int)val); - else - trace_seq_printf(s, format, (int)val); - break; - case 1: - if (plen >= 0) - trace_seq_printf(s, format, plen, (long)val); - else - trace_seq_printf(s, format, (long)val); - break; - case 2: - if (plen >= 0) - trace_seq_printf(s, format, plen, (long long)val); - else - trace_seq_printf(s, format, (long long)val); - break; - default: - do_warning_event(event, "bad count (%d)", ls); - event->flags |= TEP_EVENT_FL_FAILED; - } - return 0; -} - - -static void print_arg_string(struct trace_seq *s, const char *format, int plen, - void *data, int size, - struct tep_event *event, struct tep_print_arg *arg) -{ - struct trace_seq p; - - /* Use helper trace_seq */ - trace_seq_init(&p); - print_str_arg(&p, data, size, event, - format, plen, arg); - trace_seq_terminate(&p); - trace_seq_puts(s, p.buffer); - trace_seq_destroy(&p); -} - -static int parse_arg_format_pointer(const char *format) -{ - int ret = 0; - int index; - int loop; - - switch (*format) { - case 'F': - case 'S': - case 'f': - case 's': - ret++; - break; - case 'M': - case 'm': - /* [mM]R , [mM]F */ - switch (format[1]) { - case 'R': - case 'F': - ret++; - break; - } - ret++; - break; - case 'I': - case 'i': - index = 2; - loop = 1; - switch (format[1]) { - case 'S': - /*[S][pfs]*/ - while (loop) { - switch (format[index]) { - case 'p': - case 'f': - case 's': - ret++; - index++; - break; - default: - loop = 0; - break; - } - } - /* fall through */ - case '4': - /* [4S][hnbl] */ - switch (format[index]) { - case 'h': - case 'n': - case 'l': - case 'b': - ret++; - index++; - break; - } - if (format[1] == '4') { - ret++; - break; - } - /* fall through */ - case '6': - /* [6S]c */ - if (format[index] == 'c') - ret++; - ret++; - break; - } - ret++; - break; - case 'U': - switch (format[1]) { - case 'L': - case 'l': - case 'B': - case 'b': - ret++; - break; - } - ret++; - break; - case 'h': - switch (format[1]) { - case 'C': - case 'D': - case 'N': - ret++; - break; - } - ret++; - break; - default: - break; - } - - return ret; -} - -static void free_parse_args(struct tep_print_parse *arg) -{ - struct tep_print_parse *del; - - while (arg) { - del = arg; - arg = del->next; - free(del->format); - free(del); - } -} - -static int parse_arg_add(struct tep_print_parse **parse, char *format, - enum tep_print_parse_type type, - struct tep_print_arg *arg, - struct tep_print_arg *len_as_arg, - int ls) -{ - struct tep_print_parse *parg = NULL; - - parg = calloc(1, sizeof(*parg)); - if (!parg) - goto error; - parg->format = strdup(format); - if (!parg->format) - goto error; - parg->type = type; - parg->arg = arg; - parg->len_as_arg = len_as_arg; - parg->ls = ls; - *parse = parg; - return 0; -error: - if (parg) { - free(parg->format); - free(parg); - } - return -1; -} - -static int parse_arg_format(struct tep_print_parse **parse, - struct tep_event *event, - const char *format, struct tep_print_arg **arg) -{ - struct tep_print_arg *len_arg = NULL; - char print_format[32]; - const char *start = format; - int ret = 0; - int ls = 0; - int res; - int len; - - format++; - ret++; - for (; *format; format++) { - switch (*format) { - case '#': - /* FIXME: need to handle properly */ - break; - case 'h': - ls--; - break; - case 'l': - ls++; - break; - case 'L': - ls = 2; - break; - case '.': - case 'z': - case 'Z': - case '0' ... '9': - case '-': - break; - case '*': - /* The argument is the length. */ - if (!*arg) { - do_warning_event(event, "no argument match"); - event->flags |= TEP_EVENT_FL_FAILED; - goto out_failed; - } - if (len_arg) { - do_warning_event(event, "argument already matched"); - event->flags |= TEP_EVENT_FL_FAILED; - goto out_failed; - } - len_arg = *arg; - *arg = (*arg)->next; - break; - case 'p': - if (!*arg) { - do_warning_event(event, "no argument match"); - event->flags |= TEP_EVENT_FL_FAILED; - goto out_failed; - } - res = parse_arg_format_pointer(format + 1); - if (res > 0) { - format += res; - ret += res; - } - len = ((unsigned long)format + 1) - - (unsigned long)start; - /* should never happen */ - if (len > 31) { - do_warning_event(event, "bad format!"); - event->flags |= TEP_EVENT_FL_FAILED; - len = 31; - } - memcpy(print_format, start, len); - print_format[len] = 0; - - parse_arg_add(parse, print_format, - PRINT_FMT_ARG_POINTER, *arg, len_arg, ls); - *arg = (*arg)->next; - ret++; - return ret; - case 'd': - case 'u': - case 'i': - case 'x': - case 'X': - case 'o': - if (!*arg) { - do_warning_event(event, "no argument match"); - event->flags |= TEP_EVENT_FL_FAILED; - goto out_failed; - } - - len = ((unsigned long)format + 1) - - (unsigned long)start; - - /* should never happen */ - if (len > 30) { - do_warning_event(event, "bad format!"); - event->flags |= TEP_EVENT_FL_FAILED; - len = 31; - } - memcpy(print_format, start, len); - print_format[len] = 0; - - if (event->tep->long_size == 8 && ls == 1 && - sizeof(long) != 8) { - char *p; - - /* make %l into %ll */ - if (ls == 1 && (p = strchr(print_format, 'l'))) - memmove(p+1, p, strlen(p)+1); - ls = 2; - } - if (ls < -2 || ls > 2) { - do_warning_event(event, "bad count (%d)", ls); - event->flags |= TEP_EVENT_FL_FAILED; - } - parse_arg_add(parse, print_format, - PRINT_FMT_ARG_DIGIT, *arg, len_arg, ls); - *arg = (*arg)->next; - ret++; - return ret; - case 's': - if (!*arg) { - do_warning_event(event, "no matching argument"); - event->flags |= TEP_EVENT_FL_FAILED; - goto out_failed; - } - - len = ((unsigned long)format + 1) - - (unsigned long)start; - - /* should never happen */ - if (len > 31) { - do_warning_event(event, "bad format!"); - event->flags |= TEP_EVENT_FL_FAILED; - len = 31; - } - - memcpy(print_format, start, len); - print_format[len] = 0; - - parse_arg_add(parse, print_format, - PRINT_FMT_ARG_STRING, *arg, len_arg, 0); - *arg = (*arg)->next; - ret++; - return ret; - default: - snprintf(print_format, 32, ">%c<", *format); - parse_arg_add(parse, print_format, - PRINT_FMT_STRING, NULL, NULL, 0); - ret++; - return ret; - } - ret++; - } - -out_failed: - return ret; - -} - -static int parse_arg_string(struct tep_print_parse **parse, const char *format) -{ - struct trace_seq s; - int ret = 0; - - trace_seq_init(&s); - for (; *format; format++) { - if (*format == '\\') { - format++; - ret++; - switch (*format) { - case 'n': - trace_seq_putc(&s, '\n'); - break; - case 't': - trace_seq_putc(&s, '\t'); - break; - case 'r': - trace_seq_putc(&s, '\r'); - break; - case '\\': - trace_seq_putc(&s, '\\'); - break; - default: - trace_seq_putc(&s, *format); - break; - } - } else if (*format == '%') { - if (*(format + 1) == '%') { - trace_seq_putc(&s, '%'); - format++; - ret++; - } else - break; - } else - trace_seq_putc(&s, *format); - - ret++; - } - trace_seq_terminate(&s); - parse_arg_add(parse, s.buffer, PRINT_FMT_STRING, NULL, NULL, 0); - trace_seq_destroy(&s); - - return ret; -} - -static struct tep_print_parse * -parse_args(struct tep_event *event, const char *format, struct tep_print_arg *arg) -{ - struct tep_print_parse *parse_ret = NULL; - struct tep_print_parse **parse = NULL; - int ret; - int len; - - len = strlen(format); - while (*format) { - if (!parse_ret) - parse = &parse_ret; - if (*format == '%' && *(format + 1) != '%') - ret = parse_arg_format(parse, event, format, &arg); - else - ret = parse_arg_string(parse, format); - if (*parse) - parse = &((*parse)->next); - - len -= ret; - if (len > 0) - format += ret; - else - break; - } - return parse_ret; -} - -static void print_event_cache(struct tep_print_parse *parse, struct trace_seq *s, - void *data, int size, struct tep_event *event) -{ - int len_arg; - - while (parse) { - if (parse->len_as_arg) - len_arg = eval_num_arg(data, size, event, parse->len_as_arg); - switch (parse->type) { - case PRINT_FMT_ARG_DIGIT: - print_arg_number(s, parse->format, - parse->len_as_arg ? len_arg : -1, data, - size, parse->ls, event, parse->arg); - break; - case PRINT_FMT_ARG_POINTER: - print_arg_pointer(s, parse->format, - parse->len_as_arg ? len_arg : 1, - data, size, event, parse->arg); - break; - case PRINT_FMT_ARG_STRING: - print_arg_string(s, parse->format, - parse->len_as_arg ? len_arg : -1, - data, size, event, parse->arg); - break; - case PRINT_FMT_STRING: - default: - trace_seq_printf(s, "%s", parse->format); - break; - } - parse = parse->next; - } -} - -static void pretty_print(struct trace_seq *s, void *data, int size, struct tep_event *event) -{ - struct tep_print_parse *parse = event->print_fmt.print_cache; - struct tep_print_arg *args = NULL; - char *bprint_fmt = NULL; - - if (event->flags & TEP_EVENT_FL_FAILED) { - trace_seq_printf(s, "[FAILED TO PARSE]"); - tep_print_fields(s, data, size, event); - return; - } - - if (event->flags & TEP_EVENT_FL_ISBPRINT) { - bprint_fmt = get_bprint_format(data, size, event); - args = make_bprint_args(bprint_fmt, data, size, event); - parse = parse_args(event, bprint_fmt, args); - } - - print_event_cache(parse, s, data, size, event); - - if (event->flags & TEP_EVENT_FL_ISBPRINT) { - free_parse_args(parse); - free_args(args); - free(bprint_fmt); - } -} - -/* - * This parses out the Latency format (interrupts disabled, - * need rescheduling, in hard/soft interrupt, preempt count - * and lock depth) and places it into the trace_seq. - */ -static void data_latency_format(struct tep_handle *tep, struct trace_seq *s, - char *format, struct tep_record *record) -{ - static int check_lock_depth = 1; - static int check_migrate_disable = 1; - static int lock_depth_exists; - static int migrate_disable_exists; - unsigned int lat_flags; - struct trace_seq sq; - unsigned int pc; - int lock_depth = 0; - int migrate_disable = 0; - int hardirq; - int softirq; - void *data = record->data; - - trace_seq_init(&sq); - lat_flags = parse_common_flags(tep, data); - pc = parse_common_pc(tep, data); - /* lock_depth may not always exist */ - if (lock_depth_exists) - lock_depth = parse_common_lock_depth(tep, data); - else if (check_lock_depth) { - lock_depth = parse_common_lock_depth(tep, data); - if (lock_depth < 0) - check_lock_depth = 0; - else - lock_depth_exists = 1; - } - - /* migrate_disable may not always exist */ - if (migrate_disable_exists) - migrate_disable = parse_common_migrate_disable(tep, data); - else if (check_migrate_disable) { - migrate_disable = parse_common_migrate_disable(tep, data); - if (migrate_disable < 0) - check_migrate_disable = 0; - else - migrate_disable_exists = 1; - } - - hardirq = lat_flags & TRACE_FLAG_HARDIRQ; - softirq = lat_flags & TRACE_FLAG_SOFTIRQ; - - trace_seq_printf(&sq, "%c%c%c", - (lat_flags & TRACE_FLAG_IRQS_OFF) ? 'd' : - (lat_flags & TRACE_FLAG_IRQS_NOSUPPORT) ? - 'X' : '.', - (lat_flags & TRACE_FLAG_NEED_RESCHED) ? - 'N' : '.', - (hardirq && softirq) ? 'H' : - hardirq ? 'h' : softirq ? 's' : '.'); - - if (pc) - trace_seq_printf(&sq, "%x", pc); - else - trace_seq_printf(&sq, "."); - - if (migrate_disable_exists) { - if (migrate_disable < 0) - trace_seq_printf(&sq, "."); - else - trace_seq_printf(&sq, "%d", migrate_disable); - } - - if (lock_depth_exists) { - if (lock_depth < 0) - trace_seq_printf(&sq, "."); - else - trace_seq_printf(&sq, "%d", lock_depth); - } - - if (sq.state == TRACE_SEQ__MEM_ALLOC_FAILED) { - s->state = TRACE_SEQ__MEM_ALLOC_FAILED; - return; - } - - trace_seq_terminate(&sq); - trace_seq_puts(s, sq.buffer); - trace_seq_destroy(&sq); - trace_seq_terminate(s); -} - -/** - * tep_data_type - parse out the given event type - * @tep: a handle to the trace event parser context - * @rec: the record to read from - * - * This returns the event id from the @rec. - */ -int tep_data_type(struct tep_handle *tep, struct tep_record *rec) -{ - return trace_parse_common_type(tep, rec->data); -} - -/** - * tep_data_pid - parse the PID from record - * @tep: a handle to the trace event parser context - * @rec: the record to parse - * - * This returns the PID from a record. - */ -int tep_data_pid(struct tep_handle *tep, struct tep_record *rec) -{ - return parse_common_pid(tep, rec->data); -} - -/** - * tep_data_preempt_count - parse the preempt count from the record - * @tep: a handle to the trace event parser context - * @rec: the record to parse - * - * This returns the preempt count from a record. - */ -int tep_data_preempt_count(struct tep_handle *tep, struct tep_record *rec) -{ - return parse_common_pc(tep, rec->data); -} - -/** - * tep_data_flags - parse the latency flags from the record - * @tep: a handle to the trace event parser context - * @rec: the record to parse - * - * This returns the latency flags from a record. - * - * Use trace_flag_type enum for the flags (see event-parse.h). - */ -int tep_data_flags(struct tep_handle *tep, struct tep_record *rec) -{ - return parse_common_flags(tep, rec->data); -} - -/** - * tep_data_comm_from_pid - return the command line from PID - * @tep: a handle to the trace event parser context - * @pid: the PID of the task to search for - * - * This returns a pointer to the command line that has the given - * @pid. - */ -const char *tep_data_comm_from_pid(struct tep_handle *tep, int pid) -{ - const char *comm; - - comm = find_cmdline(tep, pid); - return comm; -} - -static struct tep_cmdline * -pid_from_cmdlist(struct tep_handle *tep, const char *comm, struct tep_cmdline *next) -{ - struct cmdline_list *cmdlist = (struct cmdline_list *)next; - - if (cmdlist) - cmdlist = cmdlist->next; - else - cmdlist = tep->cmdlist; - - while (cmdlist && strcmp(cmdlist->comm, comm) != 0) - cmdlist = cmdlist->next; - - return (struct tep_cmdline *)cmdlist; -} - -/** - * tep_data_pid_from_comm - return the pid from a given comm - * @tep: a handle to the trace event parser context - * @comm: the cmdline to find the pid from - * @next: the cmdline structure to find the next comm - * - * This returns the cmdline structure that holds a pid for a given - * comm, or NULL if none found. As there may be more than one pid for - * a given comm, the result of this call can be passed back into - * a recurring call in the @next parameter, and then it will find the - * next pid. - * Also, it does a linear search, so it may be slow. - */ -struct tep_cmdline *tep_data_pid_from_comm(struct tep_handle *tep, const char *comm, - struct tep_cmdline *next) -{ - struct tep_cmdline *cmdline; - - /* - * If the cmdlines have not been converted yet, then use - * the list. - */ - if (!tep->cmdlines) - return pid_from_cmdlist(tep, comm, next); - - if (next) { - /* - * The next pointer could have been still from - * a previous call before cmdlines were created - */ - if (next < tep->cmdlines || - next >= tep->cmdlines + tep->cmdline_count) - next = NULL; - else - cmdline = next++; - } - - if (!next) - cmdline = tep->cmdlines; - - while (cmdline < tep->cmdlines + tep->cmdline_count) { - if (strcmp(cmdline->comm, comm) == 0) - return cmdline; - cmdline++; - } - return NULL; -} - -/** - * tep_cmdline_pid - return the pid associated to a given cmdline - * @tep: a handle to the trace event parser context - * @cmdline: The cmdline structure to get the pid from - * - * Returns the pid for a give cmdline. If @cmdline is NULL, then - * -1 is returned. - */ -int tep_cmdline_pid(struct tep_handle *tep, struct tep_cmdline *cmdline) -{ - struct cmdline_list *cmdlist = (struct cmdline_list *)cmdline; - - if (!cmdline) - return -1; - - /* - * If cmdlines have not been created yet, or cmdline is - * not part of the array, then treat it as a cmdlist instead. - */ - if (!tep->cmdlines || - cmdline < tep->cmdlines || - cmdline >= tep->cmdlines + tep->cmdline_count) - return cmdlist->pid; - - return cmdline->pid; -} - -/* - * This parses the raw @data using the given @event information and - * writes the print format into the trace_seq. - */ -static void print_event_info(struct trace_seq *s, char *format, bool raw, - struct tep_event *event, struct tep_record *record) -{ - int print_pretty = 1; - - if (raw || (event->flags & TEP_EVENT_FL_PRINTRAW)) - tep_print_fields(s, record->data, record->size, event); - else { - - if (event->handler && !(event->flags & TEP_EVENT_FL_NOHANDLE)) - print_pretty = event->handler(s, record, event, - event->context); - - if (print_pretty) - pretty_print(s, record->data, record->size, event); - } - - trace_seq_terminate(s); -} - -/** - * tep_find_event_by_record - return the event from a given record - * @tep: a handle to the trace event parser context - * @record: The record to get the event from - * - * Returns the associated event for a given record, or NULL if non is - * is found. - */ -struct tep_event * -tep_find_event_by_record(struct tep_handle *tep, struct tep_record *record) -{ - int type; - - if (record->size < 0) { - do_warning("ug! negative record size %d", record->size); - return NULL; - } - - type = trace_parse_common_type(tep, record->data); - - return tep_find_event(tep, type); -} - -/* - * Writes the timestamp of the record into @s. Time divisor and precision can be - * specified as part of printf @format string. Example: - * "%3.1000d" - divide the time by 1000 and print the first 3 digits - * before the dot. Thus, the timestamp "123456000" will be printed as - * "123.456" - */ -static void print_event_time(struct tep_handle *tep, struct trace_seq *s, - char *format, struct tep_event *event, - struct tep_record *record) -{ - unsigned long long time; - char *divstr; - int prec = 0, pr; - int div = 0; - int p10 = 1; - - if (isdigit(*(format + 1))) - prec = atoi(format + 1); - divstr = strchr(format, '.'); - if (divstr && isdigit(*(divstr + 1))) - div = atoi(divstr + 1); - time = record->ts; - if (div) { - time += div / 2; - time /= div; - } - pr = prec; - while (pr--) - p10 *= 10; - - if (p10 > 1 && p10 < time) - trace_seq_printf(s, "%5llu.%0*llu", time / p10, prec, time % p10); - else - trace_seq_printf(s, "%12llu", time); -} - -struct print_event_type { - enum { - EVENT_TYPE_INT = 1, - EVENT_TYPE_STRING, - EVENT_TYPE_UNKNOWN, - } type; - char format[32]; -}; - -static void print_string(struct tep_handle *tep, struct trace_seq *s, - struct tep_record *record, struct tep_event *event, - const char *arg, struct print_event_type *type) -{ - const char *comm; - int pid; - - if (strncmp(arg, TEP_PRINT_LATENCY, strlen(TEP_PRINT_LATENCY)) == 0) { - data_latency_format(tep, s, type->format, record); - } else if (strncmp(arg, TEP_PRINT_COMM, strlen(TEP_PRINT_COMM)) == 0) { - pid = parse_common_pid(tep, record->data); - comm = find_cmdline(tep, pid); - trace_seq_printf(s, type->format, comm); - } else if (strncmp(arg, TEP_PRINT_INFO_RAW, strlen(TEP_PRINT_INFO_RAW)) == 0) { - print_event_info(s, type->format, true, event, record); - } else if (strncmp(arg, TEP_PRINT_INFO, strlen(TEP_PRINT_INFO)) == 0) { - print_event_info(s, type->format, false, event, record); - } else if (strncmp(arg, TEP_PRINT_NAME, strlen(TEP_PRINT_NAME)) == 0) { - trace_seq_printf(s, type->format, event->name); - } else { - trace_seq_printf(s, "[UNKNOWN TEP TYPE %s]", arg); - } - -} - -static void print_int(struct tep_handle *tep, struct trace_seq *s, - struct tep_record *record, struct tep_event *event, - int arg, struct print_event_type *type) -{ - int param; - - switch (arg) { - case TEP_PRINT_CPU: - param = record->cpu; - break; - case TEP_PRINT_PID: - param = parse_common_pid(tep, record->data); - break; - case TEP_PRINT_TIME: - return print_event_time(tep, s, type->format, event, record); - default: - return; - } - trace_seq_printf(s, type->format, param); -} - -static int tep_print_event_param_type(char *format, - struct print_event_type *type) -{ - char *str = format + 1; - int i = 1; - - type->type = EVENT_TYPE_UNKNOWN; - while (*str) { - switch (*str) { - case 'd': - case 'u': - case 'i': - case 'x': - case 'X': - case 'o': - type->type = EVENT_TYPE_INT; - break; - case 's': - type->type = EVENT_TYPE_STRING; - break; - } - str++; - i++; - if (type->type != EVENT_TYPE_UNKNOWN) - break; - } - memset(type->format, 0, 32); - memcpy(type->format, format, i < 32 ? i : 31); - return i; -} - -/** - * tep_print_event - Write various event information - * @tep: a handle to the trace event parser context - * @s: the trace_seq to write to - * @record: The record to get the event from - * @format: a printf format string. Supported event fileds: - * TEP_PRINT_PID, "%d" - event PID - * TEP_PRINT_CPU, "%d" - event CPU - * TEP_PRINT_COMM, "%s" - event command string - * TEP_PRINT_NAME, "%s" - event name - * TEP_PRINT_LATENCY, "%s" - event latency - * TEP_PRINT_TIME, %d - event time stamp. A divisor and precision - * can be specified as part of this format string: - * "%precision.divisord". Example: - * "%3.1000d" - divide the time by 1000 and print the first - * 3 digits before the dot. Thus, the time stamp - * "123456000" will be printed as "123.456" - * TEP_PRINT_INFO, "%s" - event information. If any width is specified in - * the format string, the event information will be printed - * in raw format. - * Writes the specified event information into @s. - */ -void tep_print_event(struct tep_handle *tep, struct trace_seq *s, - struct tep_record *record, const char *fmt, ...) -{ - struct print_event_type type; - char *format = strdup(fmt); - char *current = format; - char *str = format; - int offset; - va_list args; - struct tep_event *event; - - if (!format) - return; - - event = tep_find_event_by_record(tep, record); - va_start(args, fmt); - while (*current) { - current = strchr(str, '%'); - if (!current) { - trace_seq_puts(s, str); - break; - } - memset(&type, 0, sizeof(type)); - offset = tep_print_event_param_type(current, &type); - *current = '\0'; - trace_seq_puts(s, str); - current += offset; - switch (type.type) { - case EVENT_TYPE_STRING: - print_string(tep, s, record, event, - va_arg(args, char*), &type); - break; - case EVENT_TYPE_INT: - print_int(tep, s, record, event, - va_arg(args, int), &type); - break; - case EVENT_TYPE_UNKNOWN: - default: - trace_seq_printf(s, "[UNKNOWN TYPE]"); - break; - } - str = current; - - } - va_end(args); - free(format); -} - -static int events_id_cmp(const void *a, const void *b) -{ - struct tep_event * const * ea = a; - struct tep_event * const * eb = b; - - if ((*ea)->id < (*eb)->id) - return -1; - - if ((*ea)->id > (*eb)->id) - return 1; - - return 0; -} - -static int events_name_cmp(const void *a, const void *b) -{ - struct tep_event * const * ea = a; - struct tep_event * const * eb = b; - int res; - - res = strcmp((*ea)->name, (*eb)->name); - if (res) - return res; - - res = strcmp((*ea)->system, (*eb)->system); - if (res) - return res; - - return events_id_cmp(a, b); -} - -static int events_system_cmp(const void *a, const void *b) -{ - struct tep_event * const * ea = a; - struct tep_event * const * eb = b; - int res; - - res = strcmp((*ea)->system, (*eb)->system); - if (res) - return res; - - res = strcmp((*ea)->name, (*eb)->name); - if (res) - return res; - - return events_id_cmp(a, b); -} - -static struct tep_event **list_events_copy(struct tep_handle *tep) -{ - struct tep_event **events; - - if (!tep) - return NULL; - - events = malloc(sizeof(*events) * (tep->nr_events + 1)); - if (!events) - return NULL; - - memcpy(events, tep->events, sizeof(*events) * tep->nr_events); - events[tep->nr_events] = NULL; - return events; -} - -static void list_events_sort(struct tep_event **events, int nr_events, - enum tep_event_sort_type sort_type) -{ - int (*sort)(const void *a, const void *b); - - switch (sort_type) { - case TEP_EVENT_SORT_ID: - sort = events_id_cmp; - break; - case TEP_EVENT_SORT_NAME: - sort = events_name_cmp; - break; - case TEP_EVENT_SORT_SYSTEM: - sort = events_system_cmp; - break; - default: - sort = NULL; - } - - if (sort) - qsort(events, nr_events, sizeof(*events), sort); -} - -/** - * tep_list_events - Get events, sorted by given criteria. - * @tep: a handle to the tep context - * @sort_type: desired sort order of the events in the array - * - * Returns an array of pointers to all events, sorted by the given - * @sort_type criteria. The last element of the array is NULL. The returned - * memory must not be freed, it is managed by the library. - * The function is not thread safe. - */ -struct tep_event **tep_list_events(struct tep_handle *tep, - enum tep_event_sort_type sort_type) -{ - struct tep_event **events; - - if (!tep) - return NULL; - - events = tep->sort_events; - if (events && tep->last_type == sort_type) - return events; - - if (!events) { - events = list_events_copy(tep); - if (!events) - return NULL; - - tep->sort_events = events; - - /* the internal events are sorted by id */ - if (sort_type == TEP_EVENT_SORT_ID) { - tep->last_type = sort_type; - return events; - } - } - - list_events_sort(events, tep->nr_events, sort_type); - tep->last_type = sort_type; - - return events; -} - - -/** - * tep_list_events_copy - Thread safe version of tep_list_events() - * @tep: a handle to the tep context - * @sort_type: desired sort order of the events in the array - * - * Returns an array of pointers to all events, sorted by the given - * @sort_type criteria. The last element of the array is NULL. The returned - * array is newly allocated inside the function and must be freed by the caller - */ -struct tep_event **tep_list_events_copy(struct tep_handle *tep, - enum tep_event_sort_type sort_type) -{ - struct tep_event **events; - - if (!tep) - return NULL; - - events = list_events_copy(tep); - if (!events) - return NULL; - - /* the internal events are sorted by id */ - if (sort_type == TEP_EVENT_SORT_ID) - return events; - - list_events_sort(events, tep->nr_events, sort_type); - - return events; -} - -static struct tep_format_field ** -get_event_fields(const char *type, const char *name, - int count, struct tep_format_field *list) -{ - struct tep_format_field **fields; - struct tep_format_field *field; - int i = 0; - - fields = malloc(sizeof(*fields) * (count + 1)); - if (!fields) - return NULL; - - for (field = list; field; field = field->next) { - fields[i++] = field; - if (i == count + 1) { - do_warning("event %s has more %s fields than specified", - name, type); - i--; - break; - } - } - - if (i != count) - do_warning("event %s has less %s fields than specified", - name, type); - - fields[i] = NULL; - - return fields; -} - -/** - * tep_event_common_fields - return a list of common fields for an event - * @event: the event to return the common fields of. - * - * Returns an allocated array of fields. The last item in the array is NULL. - * The array must be freed with free(). - */ -struct tep_format_field **tep_event_common_fields(struct tep_event *event) -{ - return get_event_fields("common", event->name, - event->format.nr_common, - event->format.common_fields); -} - -/** - * tep_event_fields - return a list of event specific fields for an event - * @event: the event to return the fields of. - * - * Returns an allocated array of fields. The last item in the array is NULL. - * The array must be freed with free(). - */ -struct tep_format_field **tep_event_fields(struct tep_event *event) -{ - return get_event_fields("event", event->name, - event->format.nr_fields, - event->format.fields); -} - -static void print_fields(struct trace_seq *s, struct tep_print_flag_sym *field) -{ - trace_seq_printf(s, "{ %s, %s }", field->value, field->str); - if (field->next) { - trace_seq_puts(s, ", "); - print_fields(s, field->next); - } -} - -/* for debugging */ -static void print_args(struct tep_print_arg *args) -{ - int print_paren = 1; - struct trace_seq s; - - switch (args->type) { - case TEP_PRINT_NULL: - printf("null"); - break; - case TEP_PRINT_ATOM: - printf("%s", args->atom.atom); - break; - case TEP_PRINT_FIELD: - printf("REC->%s", args->field.name); - break; - case TEP_PRINT_FLAGS: - printf("__print_flags("); - print_args(args->flags.field); - printf(", %s, ", args->flags.delim); - trace_seq_init(&s); - print_fields(&s, args->flags.flags); - trace_seq_do_printf(&s); - trace_seq_destroy(&s); - printf(")"); - break; - case TEP_PRINT_SYMBOL: - printf("__print_symbolic("); - print_args(args->symbol.field); - printf(", "); - trace_seq_init(&s); - print_fields(&s, args->symbol.symbols); - trace_seq_do_printf(&s); - trace_seq_destroy(&s); - printf(")"); - break; - case TEP_PRINT_HEX: - printf("__print_hex("); - print_args(args->hex.field); - printf(", "); - print_args(args->hex.size); - printf(")"); - break; - case TEP_PRINT_HEX_STR: - printf("__print_hex_str("); - print_args(args->hex.field); - printf(", "); - print_args(args->hex.size); - printf(")"); - break; - case TEP_PRINT_INT_ARRAY: - printf("__print_array("); - print_args(args->int_array.field); - printf(", "); - print_args(args->int_array.count); - printf(", "); - print_args(args->int_array.el_size); - printf(")"); - break; - case TEP_PRINT_STRING: - case TEP_PRINT_BSTRING: - printf("__get_str(%s)", args->string.string); - break; - case TEP_PRINT_BITMASK: - printf("__get_bitmask(%s)", args->bitmask.bitmask); - break; - case TEP_PRINT_TYPE: - printf("(%s)", args->typecast.type); - print_args(args->typecast.item); - break; - case TEP_PRINT_OP: - if (strcmp(args->op.op, ":") == 0) - print_paren = 0; - if (print_paren) - printf("("); - print_args(args->op.left); - printf(" %s ", args->op.op); - print_args(args->op.right); - if (print_paren) - printf(")"); - break; - default: - /* we should warn... */ - return; - } - if (args->next) { - printf("\n"); - print_args(args->next); - } -} - -static void parse_header_field(const char *field, - int *offset, int *size, int mandatory) -{ - unsigned long long save_input_buf_ptr; - unsigned long long save_input_buf_siz; - char *token; - int type; - - save_input_buf_ptr = input_buf_ptr; - save_input_buf_siz = input_buf_siz; - - if (read_expected(TEP_EVENT_ITEM, "field") < 0) - return; - if (read_expected(TEP_EVENT_OP, ":") < 0) - return; - - /* type */ - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto fail; - free_token(token); - - /* - * If this is not a mandatory field, then test it first. - */ - if (mandatory) { - if (read_expected(TEP_EVENT_ITEM, field) < 0) - return; - } else { - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto fail; - if (strcmp(token, field) != 0) - goto discard; - free_token(token); - } - - if (read_expected(TEP_EVENT_OP, ";") < 0) - return; - if (read_expected(TEP_EVENT_ITEM, "offset") < 0) - return; - if (read_expected(TEP_EVENT_OP, ":") < 0) - return; - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto fail; - *offset = atoi(token); - free_token(token); - if (read_expected(TEP_EVENT_OP, ";") < 0) - return; - if (read_expected(TEP_EVENT_ITEM, "size") < 0) - return; - if (read_expected(TEP_EVENT_OP, ":") < 0) - return; - if (read_expect_type(TEP_EVENT_ITEM, &token) < 0) - goto fail; - *size = atoi(token); - free_token(token); - if (read_expected(TEP_EVENT_OP, ";") < 0) - return; - type = read_token(&token); - if (type != TEP_EVENT_NEWLINE) { - /* newer versions of the kernel have a "signed" type */ - if (type != TEP_EVENT_ITEM) - goto fail; - - if (strcmp(token, "signed") != 0) - goto fail; - - free_token(token); - - if (read_expected(TEP_EVENT_OP, ":") < 0) - return; - - if (read_expect_type(TEP_EVENT_ITEM, &token)) - goto fail; - - free_token(token); - if (read_expected(TEP_EVENT_OP, ";") < 0) - return; - - if (read_expect_type(TEP_EVENT_NEWLINE, &token)) - goto fail; - } - fail: - free_token(token); - return; - - discard: - input_buf_ptr = save_input_buf_ptr; - input_buf_siz = save_input_buf_siz; - *offset = 0; - *size = 0; - free_token(token); -} - -/** - * tep_parse_header_page - parse the data stored in the header page - * @tep: a handle to the trace event parser context - * @buf: the buffer storing the header page format string - * @size: the size of @buf - * @long_size: the long size to use if there is no header - * - * This parses the header page format for information on the - * ring buffer used. The @buf should be copied from - * - * /sys/kernel/debug/tracing/events/header_page - */ -int tep_parse_header_page(struct tep_handle *tep, char *buf, unsigned long size, - int long_size) -{ - int ignore; - - if (!size) { - /* - * Old kernels did not have header page info. - * Sorry but we just use what we find here in user space. - */ - tep->header_page_ts_size = sizeof(long long); - tep->header_page_size_size = long_size; - tep->header_page_data_offset = sizeof(long long) + long_size; - tep->old_format = 1; - return -1; - } - init_input_buf(buf, size); - - parse_header_field("timestamp", &tep->header_page_ts_offset, - &tep->header_page_ts_size, 1); - parse_header_field("commit", &tep->header_page_size_offset, - &tep->header_page_size_size, 1); - parse_header_field("overwrite", &tep->header_page_overwrite, - &ignore, 0); - parse_header_field("data", &tep->header_page_data_offset, - &tep->header_page_data_size, 1); - - return 0; -} - -static int event_matches(struct tep_event *event, - int id, const char *sys_name, - const char *event_name) -{ - if (id >= 0 && id != event->id) - return 0; - - if (event_name && (strcmp(event_name, event->name) != 0)) - return 0; - - if (sys_name && (strcmp(sys_name, event->system) != 0)) - return 0; - - return 1; -} - -static void free_handler(struct event_handler *handle) -{ - free((void *)handle->sys_name); - free((void *)handle->event_name); - free(handle); -} - -static int find_event_handle(struct tep_handle *tep, struct tep_event *event) -{ - struct event_handler *handle, **next; - - for (next = &tep->handlers; *next; - next = &(*next)->next) { - handle = *next; - if (event_matches(event, handle->id, - handle->sys_name, - handle->event_name)) - break; - } - - if (!(*next)) - return 0; - - pr_stat("overriding event (%d) %s:%s with new print handler", - event->id, event->system, event->name); - - event->handler = handle->func; - event->context = handle->context; - - *next = handle->next; - free_handler(handle); - - return 1; -} - -/** - * parse_format - parse the event format - * @buf: the buffer storing the event format string - * @size: the size of @buf - * @sys: the system the event belongs to - * - * This parses the event format and creates an event structure - * to quickly parse raw data for a given event. - * - * These files currently come from: - * - * /sys/kernel/debug/tracing/events/.../.../format - */ -static enum tep_errno parse_format(struct tep_event **eventp, - struct tep_handle *tep, const char *buf, - unsigned long size, const char *sys) -{ - struct tep_event *event; - int ret; - - init_input_buf(buf, size); - - *eventp = event = alloc_event(); - if (!event) - return TEP_ERRNO__MEM_ALLOC_FAILED; - - event->name = event_read_name(); - if (!event->name) { - /* Bad event? */ - ret = TEP_ERRNO__MEM_ALLOC_FAILED; - goto event_alloc_failed; - } - - if (strcmp(sys, "ftrace") == 0) { - event->flags |= TEP_EVENT_FL_ISFTRACE; - - if (strcmp(event->name, "bprint") == 0) - event->flags |= TEP_EVENT_FL_ISBPRINT; - } - - event->id = event_read_id(); - if (event->id < 0) { - ret = TEP_ERRNO__READ_ID_FAILED; - /* - * This isn't an allocation error actually. - * But as the ID is critical, just bail out. - */ - goto event_alloc_failed; - } - - event->system = strdup(sys); - if (!event->system) { - ret = TEP_ERRNO__MEM_ALLOC_FAILED; - goto event_alloc_failed; - } - - /* Add tep to event so that it can be referenced */ - event->tep = tep; - - ret = event_read_format(event); - if (ret < 0) { - ret = TEP_ERRNO__READ_FORMAT_FAILED; - goto event_parse_failed; - } - - /* - * If the event has an override, don't print warnings if the event - * print format fails to parse. - */ - if (tep && find_event_handle(tep, event)) - show_warning = 0; - - ret = event_read_print(event); - show_warning = 1; - - if (ret < 0) { - ret = TEP_ERRNO__READ_PRINT_FAILED; - goto event_parse_failed; - } - - if (!ret && (event->flags & TEP_EVENT_FL_ISFTRACE)) { - struct tep_format_field *field; - struct tep_print_arg *arg, **list; - - /* old ftrace had no args */ - list = &event->print_fmt.args; - for (field = event->format.fields; field; field = field->next) { - arg = alloc_arg(); - if (!arg) { - event->flags |= TEP_EVENT_FL_FAILED; - return TEP_ERRNO__OLD_FTRACE_ARG_FAILED; - } - arg->type = TEP_PRINT_FIELD; - arg->field.name = strdup(field->name); - if (!arg->field.name) { - event->flags |= TEP_EVENT_FL_FAILED; - free_arg(arg); - return TEP_ERRNO__OLD_FTRACE_ARG_FAILED; - } - arg->field.field = field; - *list = arg; - list = &arg->next; - } - } - - if (!(event->flags & TEP_EVENT_FL_ISBPRINT)) - event->print_fmt.print_cache = parse_args(event, - event->print_fmt.format, - event->print_fmt.args); - - return 0; - - event_parse_failed: - event->flags |= TEP_EVENT_FL_FAILED; - return ret; - - event_alloc_failed: - free(event->system); - free(event->name); - free(event); - *eventp = NULL; - return ret; -} - -static enum tep_errno -__parse_event(struct tep_handle *tep, - struct tep_event **eventp, - const char *buf, unsigned long size, - const char *sys) -{ - int ret = parse_format(eventp, tep, buf, size, sys); - struct tep_event *event = *eventp; - - if (event == NULL) - return ret; - - if (tep && add_event(tep, event)) { - ret = TEP_ERRNO__MEM_ALLOC_FAILED; - goto event_add_failed; - } - -#define PRINT_ARGS 0 - if (PRINT_ARGS && event->print_fmt.args) - print_args(event->print_fmt.args); - - return 0; - -event_add_failed: - free_tep_event(event); - return ret; -} - -/** - * tep_parse_format - parse the event format - * @tep: a handle to the trace event parser context - * @eventp: returned format - * @buf: the buffer storing the event format string - * @size: the size of @buf - * @sys: the system the event belongs to - * - * This parses the event format and creates an event structure - * to quickly parse raw data for a given event. - * - * These files currently come from: - * - * /sys/kernel/debug/tracing/events/.../.../format - */ -enum tep_errno tep_parse_format(struct tep_handle *tep, - struct tep_event **eventp, - const char *buf, - unsigned long size, const char *sys) -{ - return __parse_event(tep, eventp, buf, size, sys); -} - -/** - * tep_parse_event - parse the event format - * @tep: a handle to the trace event parser context - * @buf: the buffer storing the event format string - * @size: the size of @buf - * @sys: the system the event belongs to - * - * This parses the event format and creates an event structure - * to quickly parse raw data for a given event. - * - * These files currently come from: - * - * /sys/kernel/debug/tracing/events/.../.../format - */ -enum tep_errno tep_parse_event(struct tep_handle *tep, const char *buf, - unsigned long size, const char *sys) -{ - struct tep_event *event = NULL; - return __parse_event(tep, &event, buf, size, sys); -} - -int get_field_val(struct trace_seq *s, struct tep_format_field *field, - const char *name, struct tep_record *record, - unsigned long long *val, int err) -{ - if (!field) { - if (err) - trace_seq_printf(s, "", name); - return -1; - } - - if (tep_read_number_field(field, record->data, val)) { - if (err) - trace_seq_printf(s, " %s=INVALID", name); - return -1; - } - - return 0; -} - -/** - * tep_get_field_raw - return the raw pointer into the data field - * @s: The seq to print to on error - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @len: place to store the field length. - * @err: print default error if failed. - * - * Returns a pointer into record->data of the field and places - * the length of the field in @len. - * - * On failure, it returns NULL. - */ -void *tep_get_field_raw(struct trace_seq *s, struct tep_event *event, - const char *name, struct tep_record *record, - int *len, int err) -{ - struct tep_format_field *field; - void *data = record->data; - unsigned offset; - int dummy; - - if (!event) - return NULL; - - field = tep_find_field(event, name); - - if (!field) { - if (err) - trace_seq_printf(s, "", name); - return NULL; - } - - /* Allow @len to be NULL */ - if (!len) - len = &dummy; - - offset = field->offset; - if (field->flags & TEP_FIELD_IS_DYNAMIC) { - offset = tep_read_number(event->tep, - data + offset, field->size); - *len = offset >> 16; - offset &= 0xffff; - if (field->flags & TEP_FIELD_IS_RELATIVE) - offset += field->offset + field->size; - } else - *len = field->size; - - return data + offset; -} - -/** - * tep_get_field_val - find a field and return its value - * @s: The seq to print to on error - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @val: place to store the value of the field. - * @err: print default error if failed. - * - * Returns 0 on success -1 on field not found. - */ -int tep_get_field_val(struct trace_seq *s, struct tep_event *event, - const char *name, struct tep_record *record, - unsigned long long *val, int err) -{ - struct tep_format_field *field; - - if (!event) - return -1; - - field = tep_find_field(event, name); - - return get_field_val(s, field, name, record, val, err); -} - -/** - * tep_get_common_field_val - find a common field and return its value - * @s: The seq to print to on error - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @val: place to store the value of the field. - * @err: print default error if failed. - * - * Returns 0 on success -1 on field not found. - */ -int tep_get_common_field_val(struct trace_seq *s, struct tep_event *event, - const char *name, struct tep_record *record, - unsigned long long *val, int err) -{ - struct tep_format_field *field; - - if (!event) - return -1; - - field = tep_find_common_field(event, name); - - return get_field_val(s, field, name, record, val, err); -} - -/** - * tep_get_any_field_val - find a any field and return its value - * @s: The seq to print to on error - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @val: place to store the value of the field. - * @err: print default error if failed. - * - * Returns 0 on success -1 on field not found. - */ -int tep_get_any_field_val(struct trace_seq *s, struct tep_event *event, - const char *name, struct tep_record *record, - unsigned long long *val, int err) -{ - struct tep_format_field *field; - - if (!event) - return -1; - - field = tep_find_any_field(event, name); - - return get_field_val(s, field, name, record, val, err); -} - -/** - * tep_print_num_field - print a field and a format - * @s: The seq to print to - * @fmt: The printf format to print the field with. - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @err: print default error if failed. - * - * Returns positive value on success, negative in case of an error, - * or 0 if buffer is full. - */ -int tep_print_num_field(struct trace_seq *s, const char *fmt, - struct tep_event *event, const char *name, - struct tep_record *record, int err) -{ - struct tep_format_field *field = tep_find_field(event, name); - unsigned long long val; - - if (!field) - goto failed; - - if (tep_read_number_field(field, record->data, &val)) - goto failed; - - return trace_seq_printf(s, fmt, val); - - failed: - if (err) - trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); - return -1; -} - -/** - * tep_print_func_field - print a field and a format for function pointers - * @s: The seq to print to - * @fmt: The printf format to print the field with. - * @event: the event that the field is for - * @name: The name of the field - * @record: The record with the field name. - * @err: print default error if failed. - * - * Returns positive value on success, negative in case of an error, - * or 0 if buffer is full. - */ -int tep_print_func_field(struct trace_seq *s, const char *fmt, - struct tep_event *event, const char *name, - struct tep_record *record, int err) -{ - struct tep_format_field *field = tep_find_field(event, name); - struct tep_handle *tep = event->tep; - unsigned long long val; - struct func_map *func; - char tmp[128]; - - if (!field) - goto failed; - - if (tep_read_number_field(field, record->data, &val)) - goto failed; - - func = find_func(tep, val); - - if (func) - snprintf(tmp, 128, "%s/0x%llx", func->func, func->addr - val); - else - sprintf(tmp, "0x%08llx", val); - - return trace_seq_printf(s, fmt, tmp); - - failed: - if (err) - trace_seq_printf(s, "CAN'T FIND FIELD \"%s\"", name); - return -1; -} - -static void free_func_handle(struct tep_function_handler *func) -{ - struct func_params *params; - - free(func->name); - - while (func->params) { - params = func->params; - func->params = params->next; - free(params); - } - - free(func); -} - -/** - * tep_register_print_function - register a helper function - * @tep: a handle to the trace event parser context - * @func: the function to process the helper function - * @ret_type: the return type of the helper function - * @name: the name of the helper function - * @parameters: A list of enum tep_func_arg_type - * - * Some events may have helper functions in the print format arguments. - * This allows a plugin to dynamically create a way to process one - * of these functions. - * - * The @parameters is a variable list of tep_func_arg_type enums that - * must end with TEP_FUNC_ARG_VOID. - */ -int tep_register_print_function(struct tep_handle *tep, - tep_func_handler func, - enum tep_func_arg_type ret_type, - char *name, ...) -{ - struct tep_function_handler *func_handle; - struct func_params **next_param; - struct func_params *param; - enum tep_func_arg_type type; - va_list ap; - int ret; - - func_handle = find_func_handler(tep, name); - if (func_handle) { - /* - * This is most like caused by the users own - * plugins updating the function. This overrides the - * system defaults. - */ - pr_stat("override of function helper '%s'", name); - remove_func_handler(tep, name); - } - - func_handle = calloc(1, sizeof(*func_handle)); - if (!func_handle) { - do_warning("Failed to allocate function handler"); - return TEP_ERRNO__MEM_ALLOC_FAILED; - } - - func_handle->ret_type = ret_type; - func_handle->name = strdup(name); - func_handle->func = func; - if (!func_handle->name) { - do_warning("Failed to allocate function name"); - free(func_handle); - return TEP_ERRNO__MEM_ALLOC_FAILED; - } - - next_param = &(func_handle->params); - va_start(ap, name); - for (;;) { - type = va_arg(ap, enum tep_func_arg_type); - if (type == TEP_FUNC_ARG_VOID) - break; - - if (type >= TEP_FUNC_ARG_MAX_TYPES) { - do_warning("Invalid argument type %d", type); - ret = TEP_ERRNO__INVALID_ARG_TYPE; - goto out_free; - } - - param = malloc(sizeof(*param)); - if (!param) { - do_warning("Failed to allocate function param"); - ret = TEP_ERRNO__MEM_ALLOC_FAILED; - goto out_free; - } - param->type = type; - param->next = NULL; - - *next_param = param; - next_param = &(param->next); - - func_handle->nr_args++; - } - va_end(ap); - - func_handle->next = tep->func_handlers; - tep->func_handlers = func_handle; - - return 0; - out_free: - va_end(ap); - free_func_handle(func_handle); - return ret; -} - -/** - * tep_unregister_print_function - unregister a helper function - * @tep: a handle to the trace event parser context - * @func: the function to process the helper function - * @name: the name of the helper function - * - * This function removes existing print handler for function @name. - * - * Returns 0 if the handler was removed successully, -1 otherwise. - */ -int tep_unregister_print_function(struct tep_handle *tep, - tep_func_handler func, char *name) -{ - struct tep_function_handler *func_handle; - - func_handle = find_func_handler(tep, name); - if (func_handle && func_handle->func == func) { - remove_func_handler(tep, name); - return 0; - } - return -1; -} - -static struct tep_event *search_event(struct tep_handle *tep, int id, - const char *sys_name, - const char *event_name) -{ - struct tep_event *event; - - if (id >= 0) { - /* search by id */ - event = tep_find_event(tep, id); - if (!event) - return NULL; - if (event_name && (strcmp(event_name, event->name) != 0)) - return NULL; - if (sys_name && (strcmp(sys_name, event->system) != 0)) - return NULL; - } else { - event = tep_find_event_by_name(tep, sys_name, event_name); - if (!event) - return NULL; - } - return event; -} - -/** - * tep_register_event_handler - register a way to parse an event - * @tep: a handle to the trace event parser context - * @id: the id of the event to register - * @sys_name: the system name the event belongs to - * @event_name: the name of the event - * @func: the function to call to parse the event information - * @context: the data to be passed to @func - * - * This function allows a developer to override the parsing of - * a given event. If for some reason the default print format - * is not sufficient, this function will register a function - * for an event to be used to parse the data instead. - * - * If @id is >= 0, then it is used to find the event. - * else @sys_name and @event_name are used. - * - * Returns: - * TEP_REGISTER_SUCCESS_OVERWRITE if an existing handler is overwritten - * TEP_REGISTER_SUCCESS if a new handler is registered successfully - * negative TEP_ERRNO_... in case of an error - * - */ -int tep_register_event_handler(struct tep_handle *tep, int id, - const char *sys_name, const char *event_name, - tep_event_handler_func func, void *context) -{ - struct tep_event *event; - struct event_handler *handle; - - event = search_event(tep, id, sys_name, event_name); - if (event == NULL) - goto not_found; - - pr_stat("overriding event (%d) %s:%s with new print handler", - event->id, event->system, event->name); - - event->handler = func; - event->context = context; - return TEP_REGISTER_SUCCESS_OVERWRITE; - - not_found: - /* Save for later use. */ - handle = calloc(1, sizeof(*handle)); - if (!handle) { - do_warning("Failed to allocate event handler"); - return TEP_ERRNO__MEM_ALLOC_FAILED; - } - - handle->id = id; - if (event_name) - handle->event_name = strdup(event_name); - if (sys_name) - handle->sys_name = strdup(sys_name); - - if ((event_name && !handle->event_name) || - (sys_name && !handle->sys_name)) { - do_warning("Failed to allocate event/sys name"); - free((void *)handle->event_name); - free((void *)handle->sys_name); - free(handle); - return TEP_ERRNO__MEM_ALLOC_FAILED; - } - - handle->func = func; - handle->next = tep->handlers; - tep->handlers = handle; - handle->context = context; - - return TEP_REGISTER_SUCCESS; -} - -static int handle_matches(struct event_handler *handler, int id, - const char *sys_name, const char *event_name, - tep_event_handler_func func, void *context) -{ - if (id >= 0 && id != handler->id) - return 0; - - if (event_name && (strcmp(event_name, handler->event_name) != 0)) - return 0; - - if (sys_name && (strcmp(sys_name, handler->sys_name) != 0)) - return 0; - - if (func != handler->func || context != handler->context) - return 0; - - return 1; -} - -/** - * tep_unregister_event_handler - unregister an existing event handler - * @tep: a handle to the trace event parser context - * @id: the id of the event to unregister - * @sys_name: the system name the handler belongs to - * @event_name: the name of the event handler - * @func: the function to call to parse the event information - * @context: the data to be passed to @func - * - * This function removes existing event handler (parser). - * - * If @id is >= 0, then it is used to find the event. - * else @sys_name and @event_name are used. - * - * Returns 0 if handler was removed successfully, -1 if event was not found. - */ -int tep_unregister_event_handler(struct tep_handle *tep, int id, - const char *sys_name, const char *event_name, - tep_event_handler_func func, void *context) -{ - struct tep_event *event; - struct event_handler *handle; - struct event_handler **next; - - event = search_event(tep, id, sys_name, event_name); - if (event == NULL) - goto not_found; - - if (event->handler == func && event->context == context) { - pr_stat("removing override handler for event (%d) %s:%s. Going back to default handler.", - event->id, event->system, event->name); - - event->handler = NULL; - event->context = NULL; - return 0; - } - -not_found: - for (next = &tep->handlers; *next; next = &(*next)->next) { - handle = *next; - if (handle_matches(handle, id, sys_name, event_name, - func, context)) - break; - } - - if (!(*next)) - return -1; - - *next = handle->next; - free_handler(handle); - - return 0; -} - -/** - * tep_alloc - create a tep handle - */ -struct tep_handle *tep_alloc(void) -{ - struct tep_handle *tep = calloc(1, sizeof(*tep)); - - if (tep) { - tep->ref_count = 1; - tep->host_bigendian = tep_is_bigendian(); - } - - return tep; -} - -void tep_ref(struct tep_handle *tep) -{ - tep->ref_count++; -} - -int tep_get_ref(struct tep_handle *tep) -{ - if (tep) - return tep->ref_count; - return 0; -} - -__hidden void free_tep_format_field(struct tep_format_field *field) -{ - free(field->type); - if (field->alias != field->name) - free(field->alias); - free(field->name); - free(field); -} - -static void free_format_fields(struct tep_format_field *field) -{ - struct tep_format_field *next; - - while (field) { - next = field->next; - free_tep_format_field(field); - field = next; - } -} - -static void free_formats(struct tep_format *format) -{ - free_format_fields(format->common_fields); - free_format_fields(format->fields); -} - -__hidden void free_tep_event(struct tep_event *event) -{ - free(event->name); - free(event->system); - - free_formats(&event->format); - - free(event->print_fmt.format); - free_args(event->print_fmt.args); - free_parse_args(event->print_fmt.print_cache); - free(event); -} - -/** - * tep_free - free a tep handle - * @tep: the tep handle to free - */ -void tep_free(struct tep_handle *tep) -{ - struct cmdline_list *cmdlist, *cmdnext; - struct func_list *funclist, *funcnext; - struct printk_list *printklist, *printknext; - struct tep_function_handler *func_handler; - struct event_handler *handle; - int i; - - if (!tep) - return; - - cmdlist = tep->cmdlist; - funclist = tep->funclist; - printklist = tep->printklist; - - tep->ref_count--; - if (tep->ref_count) - return; - - if (tep->cmdlines) { - for (i = 0; i < tep->cmdline_count; i++) - free(tep->cmdlines[i].comm); - free(tep->cmdlines); - } - - while (cmdlist) { - cmdnext = cmdlist->next; - free(cmdlist->comm); - free(cmdlist); - cmdlist = cmdnext; - } - - if (tep->func_map) { - for (i = 0; i < (int)tep->func_count; i++) { - free(tep->func_map[i].func); - free(tep->func_map[i].mod); - } - free(tep->func_map); - } - - while (funclist) { - funcnext = funclist->next; - free(funclist->func); - free(funclist->mod); - free(funclist); - funclist = funcnext; - } - - while (tep->func_handlers) { - func_handler = tep->func_handlers; - tep->func_handlers = func_handler->next; - free_func_handle(func_handler); - } - - if (tep->printk_map) { - for (i = 0; i < (int)tep->printk_count; i++) - free(tep->printk_map[i].printk); - free(tep->printk_map); - } - - while (printklist) { - printknext = printklist->next; - free(printklist->printk); - free(printklist); - printklist = printknext; - } - - for (i = 0; i < tep->nr_events; i++) - free_tep_event(tep->events[i]); - - while (tep->handlers) { - handle = tep->handlers; - tep->handlers = handle->next; - free_handler(handle); - } - - free(tep->events); - free(tep->sort_events); - free(tep->func_resolver); - free_tep_plugin_paths(tep); - - free(tep); -} - -void tep_unref(struct tep_handle *tep) -{ - tep_free(tep); -} diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h deleted file mode 100644 index 41d4f9f6a843..000000000000 --- a/tools/lib/traceevent/event-parse.h +++ /dev/null @@ -1,750 +0,0 @@ -/* SPDX-License-Identifier: LGPL-2.1 */ -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt - * - */ -#ifndef _PARSE_EVENTS_H -#define _PARSE_EVENTS_H - -#include -#include -#include -#include -#include - -#include "trace-seq.h" - -#ifndef __maybe_unused -#define __maybe_unused __attribute__((unused)) -#endif - -#ifndef DEBUG_RECORD -#define DEBUG_RECORD 0 -#endif - -struct tep_record { - unsigned long long ts; - unsigned long long offset; - long long missed_events; /* buffer dropped events before */ - int record_size; /* size of binary record */ - int size; /* size of data */ - void *data; - int cpu; - int ref_count; - int locked; /* Do not free, even if ref_count is zero */ - void *priv; -#if DEBUG_RECORD - struct tep_record *prev; - struct tep_record *next; - long alloc_addr; -#endif -}; - -/* ----------------------- tep ----------------------- */ - -struct tep_handle; -struct tep_event; - -typedef int (*tep_event_handler_func)(struct trace_seq *s, - struct tep_record *record, - struct tep_event *event, - void *context); - -typedef int (*tep_plugin_load_func)(struct tep_handle *tep); -typedef int (*tep_plugin_unload_func)(struct tep_handle *tep); - -struct tep_plugin_option { - struct tep_plugin_option *next; - void *handle; - char *file; - char *name; - char *plugin_alias; - char *description; - const char *value; - void *priv; - int set; -}; - -/* - * Plugin hooks that can be called: - * - * TEP_PLUGIN_LOADER: (required) - * The function name to initialized the plugin. - * - * int TEP_PLUGIN_LOADER(struct tep_handle *tep) - * - * TEP_PLUGIN_UNLOADER: (optional) - * The function called just before unloading - * - * int TEP_PLUGIN_UNLOADER(struct tep_handle *tep) - * - * TEP_PLUGIN_OPTIONS: (optional) - * Plugin options that can be set before loading - * - * struct tep_plugin_option TEP_PLUGIN_OPTIONS[] = { - * { - * .name = "option-name", - * .plugin_alias = "override-file-name", (optional) - * .description = "description of option to show users", - * }, - * { - * .name = NULL, - * }, - * }; - * - * Array must end with .name = NULL; - * - * - * .plugin_alias is used to give a shorter name to access - * the vairable. Useful if a plugin handles more than one event. - * - * If .value is not set, then it is considered a boolean and only - * .set will be processed. If .value is defined, then it is considered - * a string option and .set will be ignored. - * - * TEP_PLUGIN_ALIAS: (optional) - * The name to use for finding options (uses filename if not defined) - */ -#define TEP_PLUGIN_LOADER tep_plugin_loader -#define TEP_PLUGIN_UNLOADER tep_plugin_unloader -#define TEP_PLUGIN_OPTIONS tep_plugin_options -#define TEP_PLUGIN_ALIAS tep_plugin_alias -#define _MAKE_STR(x) #x -#define MAKE_STR(x) _MAKE_STR(x) -#define TEP_PLUGIN_LOADER_NAME MAKE_STR(TEP_PLUGIN_LOADER) -#define TEP_PLUGIN_UNLOADER_NAME MAKE_STR(TEP_PLUGIN_UNLOADER) -#define TEP_PLUGIN_OPTIONS_NAME MAKE_STR(TEP_PLUGIN_OPTIONS) -#define TEP_PLUGIN_ALIAS_NAME MAKE_STR(TEP_PLUGIN_ALIAS) - -enum tep_format_flags { - TEP_FIELD_IS_ARRAY = 1, - TEP_FIELD_IS_POINTER = 2, - TEP_FIELD_IS_SIGNED = 4, - TEP_FIELD_IS_STRING = 8, - TEP_FIELD_IS_DYNAMIC = 16, - TEP_FIELD_IS_LONG = 32, - TEP_FIELD_IS_FLAG = 64, - TEP_FIELD_IS_SYMBOLIC = 128, - TEP_FIELD_IS_RELATIVE = 256, -}; - -struct tep_format_field { - struct tep_format_field *next; - struct tep_event *event; - char *type; - char *name; - char *alias; - int offset; - int size; - unsigned int arraylen; - unsigned int elementsize; - unsigned long flags; -}; - -struct tep_format { - int nr_common; - int nr_fields; - struct tep_format_field *common_fields; - struct tep_format_field *fields; -}; - -struct tep_print_arg_atom { - char *atom; -}; - -struct tep_print_arg_string { - char *string; - struct tep_format_field *field; -}; - -struct tep_print_arg_bitmask { - char *bitmask; - struct tep_format_field *field; -}; - -struct tep_print_arg_field { - char *name; - struct tep_format_field *field; -}; - -struct tep_print_flag_sym { - struct tep_print_flag_sym *next; - char *value; - char *str; -}; - -struct tep_print_arg_typecast { - char *type; - struct tep_print_arg *item; -}; - -struct tep_print_arg_flags { - struct tep_print_arg *field; - char *delim; - struct tep_print_flag_sym *flags; -}; - -struct tep_print_arg_symbol { - struct tep_print_arg *field; - struct tep_print_flag_sym *symbols; -}; - -struct tep_print_arg_hex { - struct tep_print_arg *field; - struct tep_print_arg *size; -}; - -struct tep_print_arg_int_array { - struct tep_print_arg *field; - struct tep_print_arg *count; - struct tep_print_arg *el_size; -}; - -struct tep_print_arg_dynarray { - struct tep_format_field *field; - struct tep_print_arg *index; -}; - -struct tep_print_arg; - -struct tep_print_arg_op { - char *op; - int prio; - struct tep_print_arg *left; - struct tep_print_arg *right; -}; - -struct tep_function_handler; - -struct tep_print_arg_func { - struct tep_function_handler *func; - struct tep_print_arg *args; -}; - -enum tep_print_arg_type { - TEP_PRINT_NULL, - TEP_PRINT_ATOM, - TEP_PRINT_FIELD, - TEP_PRINT_FLAGS, - TEP_PRINT_SYMBOL, - TEP_PRINT_HEX, - TEP_PRINT_INT_ARRAY, - TEP_PRINT_TYPE, - TEP_PRINT_STRING, - TEP_PRINT_BSTRING, - TEP_PRINT_DYNAMIC_ARRAY, - TEP_PRINT_OP, - TEP_PRINT_FUNC, - TEP_PRINT_BITMASK, - TEP_PRINT_DYNAMIC_ARRAY_LEN, - TEP_PRINT_HEX_STR, -}; - -struct tep_print_arg { - struct tep_print_arg *next; - enum tep_print_arg_type type; - union { - struct tep_print_arg_atom atom; - struct tep_print_arg_field field; - struct tep_print_arg_typecast typecast; - struct tep_print_arg_flags flags; - struct tep_print_arg_symbol symbol; - struct tep_print_arg_hex hex; - struct tep_print_arg_int_array int_array; - struct tep_print_arg_func func; - struct tep_print_arg_string string; - struct tep_print_arg_bitmask bitmask; - struct tep_print_arg_op op; - struct tep_print_arg_dynarray dynarray; - }; -}; - -struct tep_print_parse; - -struct tep_print_fmt { - char *format; - struct tep_print_arg *args; - struct tep_print_parse *print_cache; -}; - -struct tep_event { - struct tep_handle *tep; - char *name; - int id; - int flags; - struct tep_format format; - struct tep_print_fmt print_fmt; - char *system; - tep_event_handler_func handler; - void *context; -}; - -enum { - TEP_EVENT_FL_ISFTRACE = 0x01, - TEP_EVENT_FL_ISPRINT = 0x02, - TEP_EVENT_FL_ISBPRINT = 0x04, - TEP_EVENT_FL_ISFUNCENT = 0x10, - TEP_EVENT_FL_ISFUNCRET = 0x20, - TEP_EVENT_FL_NOHANDLE = 0x40, - TEP_EVENT_FL_PRINTRAW = 0x80, - - TEP_EVENT_FL_FAILED = 0x80000000 -}; - -enum tep_event_sort_type { - TEP_EVENT_SORT_ID, - TEP_EVENT_SORT_NAME, - TEP_EVENT_SORT_SYSTEM, -}; - -enum tep_event_type { - TEP_EVENT_ERROR, - TEP_EVENT_NONE, - TEP_EVENT_SPACE, - TEP_EVENT_NEWLINE, - TEP_EVENT_OP, - TEP_EVENT_DELIM, - TEP_EVENT_ITEM, - TEP_EVENT_DQUOTE, - TEP_EVENT_SQUOTE, -}; - -typedef unsigned long long (*tep_func_handler)(struct trace_seq *s, - unsigned long long *args); - -enum tep_func_arg_type { - TEP_FUNC_ARG_VOID, - TEP_FUNC_ARG_INT, - TEP_FUNC_ARG_LONG, - TEP_FUNC_ARG_STRING, - TEP_FUNC_ARG_PTR, - TEP_FUNC_ARG_MAX_TYPES -}; - -enum tep_flag { - TEP_NSEC_OUTPUT = 1, /* output in NSECS */ - TEP_DISABLE_SYS_PLUGINS = 1 << 1, - TEP_DISABLE_PLUGINS = 1 << 2, -}; - -#define TEP_ERRORS \ - _PE(MEM_ALLOC_FAILED, "failed to allocate memory"), \ - _PE(PARSE_EVENT_FAILED, "failed to parse event"), \ - _PE(READ_ID_FAILED, "failed to read event id"), \ - _PE(READ_FORMAT_FAILED, "failed to read event format"), \ - _PE(READ_PRINT_FAILED, "failed to read event print fmt"), \ - _PE(OLD_FTRACE_ARG_FAILED,"failed to allocate field name for ftrace"),\ - _PE(INVALID_ARG_TYPE, "invalid argument type"), \ - _PE(INVALID_EXP_TYPE, "invalid expression type"), \ - _PE(INVALID_OP_TYPE, "invalid operator type"), \ - _PE(INVALID_EVENT_NAME, "invalid event name"), \ - _PE(EVENT_NOT_FOUND, "no event found"), \ - _PE(SYNTAX_ERROR, "syntax error"), \ - _PE(ILLEGAL_RVALUE, "illegal rvalue"), \ - _PE(ILLEGAL_LVALUE, "illegal lvalue for string comparison"), \ - _PE(INVALID_REGEX, "regex did not compute"), \ - _PE(ILLEGAL_STRING_CMP, "illegal comparison for string"), \ - _PE(ILLEGAL_INTEGER_CMP,"illegal comparison for integer"), \ - _PE(REPARENT_NOT_OP, "cannot reparent other than OP"), \ - _PE(REPARENT_FAILED, "failed to reparent filter OP"), \ - _PE(BAD_FILTER_ARG, "bad arg in filter tree"), \ - _PE(UNEXPECTED_TYPE, "unexpected type (not a value)"), \ - _PE(ILLEGAL_TOKEN, "illegal token"), \ - _PE(INVALID_PAREN, "open parenthesis cannot come here"), \ - _PE(UNBALANCED_PAREN, "unbalanced number of parenthesis"), \ - _PE(UNKNOWN_TOKEN, "unknown token"), \ - _PE(FILTER_NOT_FOUND, "no filter found"), \ - _PE(NOT_A_NUMBER, "must have number field"), \ - _PE(NO_FILTER, "no filters exists"), \ - _PE(FILTER_MISS, "record does not match to filter") - -#undef _PE -#define _PE(__code, __str) TEP_ERRNO__ ## __code -enum tep_errno { - TEP_ERRNO__SUCCESS = 0, - TEP_ERRNO__FILTER_MATCH = TEP_ERRNO__SUCCESS, - - /* - * Choose an arbitrary negative big number not to clash with standard - * errno since SUS requires the errno has distinct positive values. - * See 'Issue 6' in the link below. - * - * https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html - */ - __TEP_ERRNO__START = -100000, - - TEP_ERRORS, - - __TEP_ERRNO__END, -}; -#undef _PE - -struct tep_plugin_list; - -#define INVALID_PLUGIN_LIST_OPTION ((char **)((unsigned long)-1)) - -enum tep_plugin_load_priority { - TEP_PLUGIN_FIRST, - TEP_PLUGIN_LAST, -}; - -int tep_add_plugin_path(struct tep_handle *tep, char *path, - enum tep_plugin_load_priority prio); -struct tep_plugin_list *tep_load_plugins(struct tep_handle *tep); -void tep_unload_plugins(struct tep_plugin_list *plugin_list, - struct tep_handle *tep); -void tep_load_plugins_hook(struct tep_handle *tep, const char *suffix, - void (*load_plugin)(struct tep_handle *tep, - const char *path, - const char *name, - void *data), - void *data); -char **tep_plugin_list_options(void); -void tep_plugin_free_options_list(char **list); -int tep_plugin_add_options(const char *name, - struct tep_plugin_option *options); -int tep_plugin_add_option(const char *name, const char *val); -void tep_plugin_remove_options(struct tep_plugin_option *options); -void tep_plugin_print_options(struct trace_seq *s); -void tep_print_plugins(struct trace_seq *s, - const char *prefix, const char *suffix, - const struct tep_plugin_list *list); - -/* tep_handle */ -typedef char *(tep_func_resolver_t)(void *priv, - unsigned long long *addrp, char **modp); -void tep_set_flag(struct tep_handle *tep, int flag); -void tep_clear_flag(struct tep_handle *tep, enum tep_flag flag); -bool tep_test_flag(struct tep_handle *tep, enum tep_flag flags); - -static inline int tep_is_bigendian(void) -{ - unsigned char str[] = { 0x1, 0x2, 0x3, 0x4 }; - unsigned int val; - - memcpy(&val, str, 4); - return val == 0x01020304; -} - -/* taken from kernel/trace/trace.h */ -enum trace_flag_type { - TRACE_FLAG_IRQS_OFF = 0x01, - TRACE_FLAG_IRQS_NOSUPPORT = 0x02, - TRACE_FLAG_NEED_RESCHED = 0x04, - TRACE_FLAG_HARDIRQ = 0x08, - TRACE_FLAG_SOFTIRQ = 0x10, -}; - -int tep_set_function_resolver(struct tep_handle *tep, - tep_func_resolver_t *func, void *priv); -void tep_reset_function_resolver(struct tep_handle *tep); -int tep_register_comm(struct tep_handle *tep, const char *comm, int pid); -int tep_override_comm(struct tep_handle *tep, const char *comm, int pid); -int tep_register_function(struct tep_handle *tep, char *name, - unsigned long long addr, char *mod); -int tep_register_print_string(struct tep_handle *tep, const char *fmt, - unsigned long long addr); -bool tep_is_pid_registered(struct tep_handle *tep, int pid); - -struct tep_event *tep_get_event(struct tep_handle *tep, int index); - -#define TEP_PRINT_INFO "INFO" -#define TEP_PRINT_INFO_RAW "INFO_RAW" -#define TEP_PRINT_COMM "COMM" -#define TEP_PRINT_LATENCY "LATENCY" -#define TEP_PRINT_NAME "NAME" -#define TEP_PRINT_PID 1U -#define TEP_PRINT_TIME 2U -#define TEP_PRINT_CPU 3U - -void tep_print_event(struct tep_handle *tep, struct trace_seq *s, - struct tep_record *record, const char *fmt, ...) - __attribute__ ((format (printf, 4, 5))); - -int tep_parse_header_page(struct tep_handle *tep, char *buf, unsigned long size, - int long_size); - -enum tep_errno tep_parse_event(struct tep_handle *tep, const char *buf, - unsigned long size, const char *sys); -enum tep_errno tep_parse_format(struct tep_handle *tep, - struct tep_event **eventp, - const char *buf, - unsigned long size, const char *sys); - -void *tep_get_field_raw(struct trace_seq *s, struct tep_event *event, - const char *name, struct tep_record *record, - int *len, int err); - -int tep_get_field_val(struct trace_seq *s, struct tep_event *event, - const char *name, struct tep_record *record, - unsigned long long *val, int err); -int tep_get_common_field_val(struct trace_seq *s, struct tep_event *event, - const char *name, struct tep_record *record, - unsigned long long *val, int err); -int tep_get_any_field_val(struct trace_seq *s, struct tep_event *event, - const char *name, struct tep_record *record, - unsigned long long *val, int err); - -int tep_print_num_field(struct trace_seq *s, const char *fmt, - struct tep_event *event, const char *name, - struct tep_record *record, int err); - -int tep_print_func_field(struct trace_seq *s, const char *fmt, - struct tep_event *event, const char *name, - struct tep_record *record, int err); - -enum tep_reg_handler { - TEP_REGISTER_SUCCESS = 0, - TEP_REGISTER_SUCCESS_OVERWRITE, -}; - -int tep_register_event_handler(struct tep_handle *tep, int id, - const char *sys_name, const char *event_name, - tep_event_handler_func func, void *context); -int tep_unregister_event_handler(struct tep_handle *tep, int id, - const char *sys_name, const char *event_name, - tep_event_handler_func func, void *context); -int tep_register_print_function(struct tep_handle *tep, - tep_func_handler func, - enum tep_func_arg_type ret_type, - char *name, ...); -int tep_unregister_print_function(struct tep_handle *tep, - tep_func_handler func, char *name); - -struct tep_format_field *tep_find_common_field(struct tep_event *event, const char *name); -struct tep_format_field *tep_find_field(struct tep_event *event, const char *name); -struct tep_format_field *tep_find_any_field(struct tep_event *event, const char *name); - -const char *tep_find_function(struct tep_handle *tep, unsigned long long addr); -unsigned long long -tep_find_function_address(struct tep_handle *tep, unsigned long long addr); -unsigned long long tep_read_number(struct tep_handle *tep, const void *ptr, int size); -int tep_read_number_field(struct tep_format_field *field, const void *data, - unsigned long long *value); - -struct tep_event *tep_get_first_event(struct tep_handle *tep); -int tep_get_events_count(struct tep_handle *tep); -struct tep_event *tep_find_event(struct tep_handle *tep, int id); - -struct tep_event * -tep_find_event_by_name(struct tep_handle *tep, const char *sys, const char *name); -struct tep_event * -tep_find_event_by_record(struct tep_handle *tep, struct tep_record *record); - -int tep_data_type(struct tep_handle *tep, struct tep_record *rec); -int tep_data_pid(struct tep_handle *tep, struct tep_record *rec); -int tep_data_preempt_count(struct tep_handle *tep, struct tep_record *rec); -int tep_data_flags(struct tep_handle *tep, struct tep_record *rec); -const char *tep_data_comm_from_pid(struct tep_handle *tep, int pid); -struct tep_cmdline; -struct tep_cmdline *tep_data_pid_from_comm(struct tep_handle *tep, const char *comm, - struct tep_cmdline *next); -int tep_cmdline_pid(struct tep_handle *tep, struct tep_cmdline *cmdline); - -void tep_print_field(struct trace_seq *s, void *data, - struct tep_format_field *field); -void tep_print_fields(struct trace_seq *s, void *data, - int size __maybe_unused, struct tep_event *event); -int tep_strerror(struct tep_handle *tep, enum tep_errno errnum, - char *buf, size_t buflen); - -struct tep_event **tep_list_events(struct tep_handle *tep, enum tep_event_sort_type); -struct tep_event **tep_list_events_copy(struct tep_handle *tep, - enum tep_event_sort_type); -struct tep_format_field **tep_event_common_fields(struct tep_event *event); -struct tep_format_field **tep_event_fields(struct tep_event *event); - -enum tep_endian { - TEP_LITTLE_ENDIAN = 0, - TEP_BIG_ENDIAN -}; -int tep_get_cpus(struct tep_handle *tep); -void tep_set_cpus(struct tep_handle *tep, int cpus); -int tep_get_long_size(struct tep_handle *tep); -void tep_set_long_size(struct tep_handle *tep, int long_size); -int tep_get_page_size(struct tep_handle *tep); -void tep_set_page_size(struct tep_handle *tep, int _page_size); -bool tep_is_file_bigendian(struct tep_handle *tep); -void tep_set_file_bigendian(struct tep_handle *tep, enum tep_endian endian); -bool tep_is_local_bigendian(struct tep_handle *tep); -void tep_set_local_bigendian(struct tep_handle *tep, enum tep_endian endian); -int tep_get_header_page_size(struct tep_handle *tep); -int tep_get_header_timestamp_size(struct tep_handle *tep); -bool tep_is_old_format(struct tep_handle *tep); -void tep_set_test_filters(struct tep_handle *tep, int test_filters); - -struct tep_handle *tep_alloc(void); -void tep_free(struct tep_handle *tep); -void tep_ref(struct tep_handle *tep); -void tep_unref(struct tep_handle *tep); -int tep_get_ref(struct tep_handle *tep); - -/* for debugging */ -void tep_print_funcs(struct tep_handle *tep); -void tep_print_printk(struct tep_handle *tep); - -/* ----------------------- filtering ----------------------- */ - -enum tep_filter_boolean_type { - TEP_FILTER_FALSE, - TEP_FILTER_TRUE, -}; - -enum tep_filter_op_type { - TEP_FILTER_OP_AND = 1, - TEP_FILTER_OP_OR, - TEP_FILTER_OP_NOT, -}; - -enum tep_filter_cmp_type { - TEP_FILTER_CMP_NONE, - TEP_FILTER_CMP_EQ, - TEP_FILTER_CMP_NE, - TEP_FILTER_CMP_GT, - TEP_FILTER_CMP_LT, - TEP_FILTER_CMP_GE, - TEP_FILTER_CMP_LE, - TEP_FILTER_CMP_MATCH, - TEP_FILTER_CMP_NOT_MATCH, - TEP_FILTER_CMP_REGEX, - TEP_FILTER_CMP_NOT_REGEX, -}; - -enum tep_filter_exp_type { - TEP_FILTER_EXP_NONE, - TEP_FILTER_EXP_ADD, - TEP_FILTER_EXP_SUB, - TEP_FILTER_EXP_MUL, - TEP_FILTER_EXP_DIV, - TEP_FILTER_EXP_MOD, - TEP_FILTER_EXP_RSHIFT, - TEP_FILTER_EXP_LSHIFT, - TEP_FILTER_EXP_AND, - TEP_FILTER_EXP_OR, - TEP_FILTER_EXP_XOR, - TEP_FILTER_EXP_NOT, -}; - -enum tep_filter_arg_type { - TEP_FILTER_ARG_NONE, - TEP_FILTER_ARG_BOOLEAN, - TEP_FILTER_ARG_VALUE, - TEP_FILTER_ARG_FIELD, - TEP_FILTER_ARG_EXP, - TEP_FILTER_ARG_OP, - TEP_FILTER_ARG_NUM, - TEP_FILTER_ARG_STR, -}; - -enum tep_filter_value_type { - TEP_FILTER_NUMBER, - TEP_FILTER_STRING, - TEP_FILTER_CHAR -}; - -struct tep_filter_arg; - -struct tep_filter_arg_boolean { - enum tep_filter_boolean_type value; -}; - -struct tep_filter_arg_field { - struct tep_format_field *field; -}; - -struct tep_filter_arg_value { - enum tep_filter_value_type type; - union { - char *str; - unsigned long long val; - }; -}; - -struct tep_filter_arg_op { - enum tep_filter_op_type type; - struct tep_filter_arg *left; - struct tep_filter_arg *right; -}; - -struct tep_filter_arg_exp { - enum tep_filter_exp_type type; - struct tep_filter_arg *left; - struct tep_filter_arg *right; -}; - -struct tep_filter_arg_num { - enum tep_filter_cmp_type type; - struct tep_filter_arg *left; - struct tep_filter_arg *right; -}; - -struct tep_filter_arg_str { - enum tep_filter_cmp_type type; - struct tep_format_field *field; - char *val; - char *buffer; - regex_t reg; -}; - -struct tep_filter_arg { - enum tep_filter_arg_type type; - union { - struct tep_filter_arg_boolean boolean; - struct tep_filter_arg_field field; - struct tep_filter_arg_value value; - struct tep_filter_arg_op op; - struct tep_filter_arg_exp exp; - struct tep_filter_arg_num num; - struct tep_filter_arg_str str; - }; -}; - -struct tep_filter_type { - int event_id; - struct tep_event *event; - struct tep_filter_arg *filter; -}; - -#define TEP_FILTER_ERROR_BUFSZ 1024 - -struct tep_event_filter { - struct tep_handle *tep; - int filters; - struct tep_filter_type *event_filters; - char error_buffer[TEP_FILTER_ERROR_BUFSZ]; -}; - -struct tep_event_filter *tep_filter_alloc(struct tep_handle *tep); - -/* for backward compatibility */ -#define FILTER_NONE TEP_ERRNO__NO_FILTER -#define FILTER_NOEXIST TEP_ERRNO__FILTER_NOT_FOUND -#define FILTER_MISS TEP_ERRNO__FILTER_MISS -#define FILTER_MATCH TEP_ERRNO__FILTER_MATCH - -enum tep_errno tep_filter_add_filter_str(struct tep_event_filter *filter, - const char *filter_str); - -enum tep_errno tep_filter_match(struct tep_event_filter *filter, - struct tep_record *record); - -int tep_filter_strerror(struct tep_event_filter *filter, enum tep_errno err, - char *buf, size_t buflen); - -int tep_event_filtered(struct tep_event_filter *filter, - int event_id); - -void tep_filter_reset(struct tep_event_filter *filter); - -void tep_filter_free(struct tep_event_filter *filter); - -char *tep_filter_make_string(struct tep_event_filter *filter, int event_id); - -int tep_filter_remove_event(struct tep_event_filter *filter, - int event_id); - -int tep_filter_copy(struct tep_event_filter *dest, struct tep_event_filter *source); - -int tep_filter_compare(struct tep_event_filter *filter1, struct tep_event_filter *filter2); - -#endif /* _PARSE_EVENTS_H */ diff --git a/tools/lib/traceevent/event-plugin.c b/tools/lib/traceevent/event-plugin.c deleted file mode 100644 index e7f93d5fe4fd..000000000000 --- a/tools/lib/traceevent/event-plugin.c +++ /dev/null @@ -1,711 +0,0 @@ -// SPDX-License-Identifier: LGPL-2.1 -/* - * Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "event-parse.h" -#include "event-parse-local.h" -#include "event-utils.h" -#include "trace-seq.h" - -#define LOCAL_PLUGIN_DIR ".local/lib/traceevent/plugins/" - -static struct registered_plugin_options { - struct registered_plugin_options *next; - struct tep_plugin_option *options; -} *registered_options; - -static struct trace_plugin_options { - struct trace_plugin_options *next; - char *plugin; - char *option; - char *value; -} *trace_plugin_options; - -struct tep_plugin_list { - struct tep_plugin_list *next; - char *name; - void *handle; -}; - -struct tep_plugins_dir { - struct tep_plugins_dir *next; - char *path; - enum tep_plugin_load_priority prio; -}; - -static void lower_case(char *str) -{ - if (!str) - return; - for (; *str; str++) - *str = tolower(*str); -} - -static int update_option_value(struct tep_plugin_option *op, const char *val) -{ - char *op_val; - - if (!val) { - /* toggle, only if option is boolean */ - if (op->value) - /* Warn? */ - return 0; - op->set ^= 1; - return 0; - } - - /* - * If the option has a value then it takes a string - * otherwise the option is a boolean. - */ - if (op->value) { - op->value = val; - return 0; - } - - /* Option is boolean, must be either "1", "0", "true" or "false" */ - - op_val = strdup(val); - if (!op_val) - return -1; - lower_case(op_val); - - if (strcmp(val, "1") == 0 || strcmp(val, "true") == 0) - op->set = 1; - else if (strcmp(val, "0") == 0 || strcmp(val, "false") == 0) - op->set = 0; - free(op_val); - - return 0; -} - -/** - * tep_plugin_list_options - get list of plugin options - * - * Returns an array of char strings that list the currently registered - * plugin options in the format of :