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| author | Changbin Du <changbin.du@gmail.com> | 2020-09-04 18:23:57 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-09-04 22:11:16 +0300 |
| commit | 2ae05fe0a9dfe204a6c83bbe6bd1312b3bb3d301 (patch) | |
| tree | afe9638c7a1bbf0910c6c58ab8ee705d184d1da0 /tools/perf/Documentation/perf-ftrace.txt | |
| parent | ee7fe31e6e264d748bec5378c4d5417e14019666 (diff) | |
| download | linux-2ae05fe0a9dfe204a6c83bbe6bd1312b3bb3d301.tar.xz | |
perf: ftrace: Add filter support for option -F/--funcs
Same as 'perf probe -F', this patch adds filter support for the ftrace
subcommand option '-F, --funcs <[FILTER]>'.
Here is an example that only lists functions which start with 'vfs_':
$ sudo perf ftrace -F vfs_*
vfs_fadvise
vfs_fallocate
vfs_truncate
vfs_open
vfs_setpos
vfs_llseek
vfs_readf
vfs_writef
...
Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20200904152357.6053-1-changbin.du@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-ftrace.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-ftrace.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-ftrace.txt b/tools/perf/Documentation/perf-ftrace.txt index 78358af9a1c4..1e91121bac0f 100644 --- a/tools/perf/Documentation/perf-ftrace.txt +++ b/tools/perf/Documentation/perf-ftrace.txt @@ -33,7 +33,8 @@ OPTIONS -F:: --funcs:: - List all available functions to trace. + List available functions to trace. It accepts a pattern to + only list interested functions. -p:: --pid=:: |