summaryrefslogtreecommitdiff
path: root/tools/perf/Documentation/perf-trace.txt
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2019-11-26 15:04:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-11-26 15:04:47 -0800
commit3f59dbcace56fae7e4ed303bab90f1bedadcfdf4 (patch)
treec425529202b9dbe3e3b3dde072c1edf51b1b9e93 /tools/perf/Documentation/perf-trace.txt
parentdf28204bb0f29cc475c0a8893c99b46a11a4903f (diff)
parentceb9e77324fa661b1001a0ae66f061b5fcb4e4e6 (diff)
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar: "The main kernel side changes in this cycle were: - Various Intel-PT updates and optimizations (Alexander Shishkin) - Prohibit kprobes on Xen/KVM emulate prefixes (Masami Hiramatsu) - Add support for LSM and SELinux checks to control access to the perf syscall (Joel Fernandes) - Misc other changes, optimizations, fixes and cleanups - see the shortlog for details. There were numerous tooling changes as well - 254 non-merge commits. Here are the main changes - too many to list in detail: - Enhancements to core tooling infrastructure, perf.data, libperf, libtraceevent, event parsing, vendor events, Intel PT, callchains, BPF support and instruction decoding. - There were updates to the following tools: perf annotate perf diff perf inject perf kvm perf list perf maps perf parse perf probe perf record perf report perf script perf stat perf test perf trace - And a lot of other changes: please see the shortlog and Git log for more details" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (279 commits) perf parse: Fix potential memory leak when handling tracepoint errors perf probe: Fix spelling mistake "addrees" -> "address" libtraceevent: Fix memory leakage in copy_filter_type libtraceevent: Fix header installation perf intel-bts: Does not support AUX area sampling perf intel-pt: Add support for decoding AUX area samples perf intel-pt: Add support for recording AUX area samples perf pmu: When using default config, record which bits of config were changed by the user perf auxtrace: Add support for queuing AUX area samples perf session: Add facility to peek at all events perf auxtrace: Add support for dumping AUX area samples perf inject: Cut AUX area samples perf record: Add aux-sample-size config term perf record: Add support for AUX area sampling perf auxtrace: Add support for AUX area sample recording perf auxtrace: Move perf_evsel__find_pmu() perf record: Add a function to test for kernel support for AUX area sampling perf tools: Add kernel AUX area sampling definitions perf/core: Make the mlock accounting simple again perf report: Jump to symbol source view from total cycles view ...
Diffstat (limited to 'tools/perf/Documentation/perf-trace.txt')
-rw-r--r--tools/perf/Documentation/perf-trace.txt14
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-trace.txt b/tools/perf/Documentation/perf-trace.txt
index 25b74fdb36fa..abc9b5d83312 100644
--- a/tools/perf/Documentation/perf-trace.txt
+++ b/tools/perf/Documentation/perf-trace.txt
@@ -42,6 +42,11 @@ OPTIONS
Prefixing with ! shows all syscalls but the ones specified. You may
need to escape it.
+--filter=<filter>::
+ Event filter. This option should follow an event selector (-e) which
+ selects tracepoint event(s).
+
+
-D msecs::
--delay msecs::
After starting the program, wait msecs before measuring. This is useful to
@@ -141,6 +146,10 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
Show all syscalls followed by a summary by thread with min, max, and
average times (in msec) and relative stddev.
+--errno-summary::
+ To be used with -s or -S, to show stats for the errnos experienced by
+ syscalls, using only this option will trigger --summary.
+
--tool_stats::
Show tool stats such as number of times fd->pathname was discovered thru
hooking the open syscall return + vfs_getname or via reading /proc/pid/fd, etc.
@@ -219,6 +228,11 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs.
may happen, for instance, when a thread gets migrated to a different CPU
while processing a syscall.
+--libtraceevent_print::
+ Use libtraceevent to print tracepoint arguments. By default 'perf trace' uses
+ the same beautifiers used in the strace-like enter+exit lines to augment the
+ tracepoint arguments.
+
--map-dump::
Dump BPF maps setup by events passed via -e, for instance the augmented_raw_syscalls
living in tools/perf/examples/bpf/augmented_raw_syscalls.c. For now this