From 1c4924220c96392d17e0222c113509fd7b9a0854 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 8 May 2019 15:20:05 +0200 Subject: perf script: Pad DSO name for --call-trace Pad the DSO name in --call-trace so we don't have the indent screwed by different DSO name lengths, as now for kernel there's also BPF code displayed. # perf-with-kcore record pt -e intel_pt//ku -- sleep 1 # perf-core/perf-with-kcore script pt --call-trace Before: sleep 3660 [16] 57036.806464404: ([kernel.kallsyms]) kretprobe_perf_func sleep 3660 [16] 57036.806464404: ([kernel.kallsyms]) trace_call_bpf sleep 3660 [16] 57036.806464404: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464404: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_get_current_pid_tgid sleep 3660 [16] 57036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_ktime_get_ns sleep 3660 [16] 57036.806464725: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464725: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806465045: (bpf_prog_da4fe6b3d2c29b25_trace_return) __htab_map_lookup_elem sleep 3660 [16] 57036.806465366: ([kernel.kallsyms]) memcmp sleep 3660 [16] 57036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_probe_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) probe_kernel_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) __check_object_size sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) check_stack_object sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) copy_user_enhanced_fast_string sleep 3660 [16] 57036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_probe_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) probe_kernel_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) __check_object_size sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) check_stack_object sleep 3660 [16] 57036.806465687: ([kernel.kallsyms]) copy_user_enhanced_fast_string sleep 3660 [16] 57036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_get_current_uid_gid sleep 3660 [16] 57036.806466008: ([kernel.kallsyms]) from_kgid sleep 3660 [16] 57036.806466008: ([kernel.kallsyms]) from_kuid sleep 3660 [16] 57036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return) bpf_perf_event_output sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) perf_event_output sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) perf_prepare_sample sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) perf_misc_flags sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806466328: ([kernel.kallsyms]) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806466328: ([kvm]) kvm_is_in_guest sleep 3660 [16] 57036.806466649: ([kernel.kallsyms]) __perf_event_header__init_id.isra.0 sleep 3660 [16] 57036.806466649: ([kernel.kallsyms]) perf_output_begin After: sleep 3660 [16] 57036.806464404: ([kernel.kallsyms] ) kretprobe_perf_func sleep 3660 [16] 57036.806464404: ([kernel.kallsyms] ) trace_call_bpf sleep 3660 [16] 57036.806464404: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464404: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_get_current_pid_tgid sleep 3660 [16] 57036.806464725: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_ktime_get_ns sleep 3660 [16] 57036.806464725: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806464725: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806465045: (bpf_prog_da4fe6b3d2c29b25_trace_return ) __htab_map_lookup_elem sleep 3660 [16] 57036.806465366: ([kernel.kallsyms] ) memcmp sleep 3660 [16] 57036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_probe_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) probe_kernel_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) __check_object_size sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) check_stack_object sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) copy_user_enhanced_fast_string sleep 3660 [16] 57036.806465687: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_probe_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) probe_kernel_read sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) __check_object_size sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) check_stack_object sleep 3660 [16] 57036.806465687: ([kernel.kallsyms] ) copy_user_enhanced_fast_string sleep 3660 [16] 57036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_get_current_uid_gid sleep 3660 [16] 57036.806466008: ([kernel.kallsyms] ) from_kgid sleep 3660 [16] 57036.806466008: ([kernel.kallsyms] ) from_kuid sleep 3660 [16] 57036.806466008: (bpf_prog_da4fe6b3d2c29b25_trace_return ) bpf_perf_event_output sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) perf_event_output sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) perf_prepare_sample sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) perf_misc_flags sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) __x86_indirect_thunk_rax sleep 3660 [16] 57036.806466328: ([kernel.kallsyms] ) __x86_indirect_thunk_rax Signed-off-by: Jiri Olsa Acked-by: Song Liu Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stanislav Fomichev Link: http://lkml.kernel.org/r/20190508132010.14512-8-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/linux/kernel.h | 1 + 1 file changed, 1 insertion(+) (limited to 'tools/include/linux') diff --git a/tools/include/linux/kernel.h b/tools/include/linux/kernel.h index 857d9e22826e..cba226948a0c 100644 --- a/tools/include/linux/kernel.h +++ b/tools/include/linux/kernel.h @@ -102,6 +102,7 @@ int vscnprintf(char *buf, size_t size, const char *fmt, va_list args); int scnprintf(char * buf, size_t size, const char * fmt, ...); +int scnprintf_pad(char * buf, size_t size, const char * fmt, ...); #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr)) -- cgit From 3052ba56bcb589046eca6a931bd897742653d2cb Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 25 Jun 2019 17:27:31 -0300 Subject: tools perf: Move from sane_ctype.h obtained from git to the Linux's original We got the sane_ctype.h headers from git and kept using it so far, but since that code originally came from the kernel sources to the git sources, perhaps its better to just use the one in the kernel, so that we can leverage tools/perf/check_headers.sh to be notified when our copy gets out of sync, i.e. when fixes or goodies are added to the code we've copied. This will help with things like tools/lib/string.c where we want to have more things in common with the kernel, such as strim(), skip_spaces(), etc so as to go on removing the things that we have in tools/perf/util/ and instead using the code in the kernel, indirectly and removing things like EXPORT_SYMBOL(), etc, getting notified when fixes and improvements are made to the original code. Hopefully this also should help with reducing the difference of code hosted in tools/ to the one in the kernel proper. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-7k9868l713wqtgo01xxygn12@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/linux/ctype.h | 75 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 tools/include/linux/ctype.h (limited to 'tools/include/linux') diff --git a/tools/include/linux/ctype.h b/tools/include/linux/ctype.h new file mode 100644 index 000000000000..310090b4c474 --- /dev/null +++ b/tools/include/linux/ctype.h @@ -0,0 +1,75 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_CTYPE_H +#define _LINUX_CTYPE_H + +/* + * NOTE! This ctype does not handle EOF like the standard C + * library is required to. + */ + +#define _U 0x01 /* upper */ +#define _L 0x02 /* lower */ +#define _D 0x04 /* digit */ +#define _C 0x08 /* cntrl */ +#define _P 0x10 /* punct */ +#define _S 0x20 /* white space (space/lf/tab) */ +#define _X 0x40 /* hex digit */ +#define _SP 0x80 /* hard space (0x20) */ + +extern const unsigned char _ctype[]; + +#define __ismask(x) (_ctype[(int)(unsigned char)(x)]) + +#define isalnum(c) ((__ismask(c)&(_U|_L|_D)) != 0) +#define isalpha(c) ((__ismask(c)&(_U|_L)) != 0) +#define iscntrl(c) ((__ismask(c)&(_C)) != 0) +static inline int __isdigit(int c) +{ + return '0' <= c && c <= '9'; +} +#define isdigit(c) __isdigit(c) +#define isgraph(c) ((__ismask(c)&(_P|_U|_L|_D)) != 0) +#define islower(c) ((__ismask(c)&(_L)) != 0) +#define isprint(c) ((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0) +#define ispunct(c) ((__ismask(c)&(_P)) != 0) +/* Note: isspace() must return false for %NUL-terminator */ +#define isspace(c) ((__ismask(c)&(_S)) != 0) +#define isupper(c) ((__ismask(c)&(_U)) != 0) +#define isxdigit(c) ((__ismask(c)&(_D|_X)) != 0) + +#define isascii(c) (((unsigned char)(c))<=0x7f) +#define toascii(c) (((unsigned char)(c))&0x7f) + +static inline unsigned char __tolower(unsigned char c) +{ + if (isupper(c)) + c -= 'A'-'a'; + return c; +} + +static inline unsigned char __toupper(unsigned char c) +{ + if (islower(c)) + c -= 'a'-'A'; + return c; +} + +#define tolower(c) __tolower(c) +#define toupper(c) __toupper(c) + +/* + * Fast implementation of tolower() for internal usage. Do not use in your + * code. + */ +static inline char _tolower(const char c) +{ + return c | 0x20; +} + +/* Fast check for octal digit */ +static inline int isodigit(const char c) +{ + return c >= '0' && c <= '7'; +} + +#endif -- cgit From 7bd330de43fd5693e90be13dac7fbd9af3b6335d Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 25 Jun 2019 21:23:18 -0300 Subject: tools lib: Adopt skip_spaces() from the kernel sources MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Same implementation, will be used to replace ad-hoc equivalent code in tools/. Cc: Adrian Hunter Cc: André Goddard Rosa Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-dig691cg9ripvoiprpidthw7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/linux/string.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'tools/include/linux') diff --git a/tools/include/linux/string.h b/tools/include/linux/string.h index 6c3e2cc274c5..cee239350a6b 100644 --- a/tools/include/linux/string.h +++ b/tools/include/linux/string.h @@ -29,4 +29,6 @@ static inline bool strstarts(const char *str, const char *prefix) return strncmp(str, prefix, strlen(prefix)) == 0; } -#endif /* _LINUX_STRING_H_ */ +extern char * __must_check skip_spaces(const char *); + +#endif /* _TOOLS_LINUX_STRING_H_ */ -- cgit From 45bfd0ac7bd2afa83600df9c1286a1642bb15c55 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 26 Jun 2019 11:50:16 -0300 Subject: tools lib: Adopt strim() from the kernel MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since we're working on moving stuff out of tools/perf/util/ to tools/lib/, take the opportunity to adopt routines from the kernel that are equivalent, so that tools/ code look more like the kernel. Cc: Adrian Hunter Cc: André Goddard Rosa Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-zqy1zdu2ok17qvi0ytk8z13c@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/linux/string.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools/include/linux') diff --git a/tools/include/linux/string.h b/tools/include/linux/string.h index cee239350a6b..e436f8037c87 100644 --- a/tools/include/linux/string.h +++ b/tools/include/linux/string.h @@ -31,4 +31,6 @@ static inline bool strstarts(const char *str, const char *prefix) extern char * __must_check skip_spaces(const char *); +extern char *strim(char *); + #endif /* _TOOLS_LINUX_STRING_H_ */ -- cgit From 2a60689a33a61f000bd90596b1289babcb861cd9 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 26 Jun 2019 12:24:03 -0300 Subject: tools lib: Adopt strreplace() from the kernel We'll use it to further reduce the size of tools/perf/util/string.c, replacing the strxfrchar() equivalent function we have there. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-x3r61ikjrso1buygxwke8id3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/linux/string.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'tools/include/linux') diff --git a/tools/include/linux/string.h b/tools/include/linux/string.h index e436f8037c87..a76d4df10435 100644 --- a/tools/include/linux/string.h +++ b/tools/include/linux/string.h @@ -19,6 +19,8 @@ extern size_t strlcpy(char *dest, const char *src, size_t size); char *str_error_r(int errnum, char *buf, size_t buflen); +char *strreplace(char *s, char old, char new); + /** * strstarts - does @str start with @prefix? * @str: string to examine -- cgit From 9c10548c42219e961279826c2763a0e32dc056b9 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 26 Jun 2019 15:27:58 -0300 Subject: tools lib: Move argv_{split,free} from tools/perf/util/ This came from the kernel lib/argv_split.c, so move it to tools/lib/argv_split.c, to get it closer to the kernel structure. We need to audit the usage of argv_split() to figure out if it is really necessary to do have one allocation per argv[] entry, looking at one of its users I guess that is not the case and we probably are even leaking those allocations by not using argv_free() judiciously, for later. With this we further remove stuff from tools/perf/util/, reducing the perf specific codebase and encouraging other tools/ code to use these routines so as to keep the style and constructs used with the kernel. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-j479s1ive9h75w5lfg16jroz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/include/linux/string.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools/include/linux') diff --git a/tools/include/linux/string.h b/tools/include/linux/string.h index a76d4df10435..980cb9266718 100644 --- a/tools/include/linux/string.h +++ b/tools/include/linux/string.h @@ -7,6 +7,9 @@ void *memdup(const void *src, size_t len); +char **argv_split(const char *str, int *argcp); +void argv_free(char **argv); + int strtobool(const char *s, bool *res); /* -- cgit