| From | Changbin Du <> | Subject | [PATCH 16/19] perf ftrace: add option -t/--tid to filter by thread id | Date | Sun, 10 May 2020 23:06:25 +0800 |
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This allows us to trace single thread instead of the whole process.
Signed-off-by: Changbin Du <changbin.du@gmail.com> --- tools/perf/builtin-ftrace.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 0b39b6a88026..8d04e5afe2d3 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -707,6 +707,8 @@ int cmd_ftrace(int argc, const char **argv) "List available functions to filter"), OPT_STRING('p', "pid", &ftrace.target.pid, "pid", "trace on existing process id"), + OPT_STRING('t', "tid", &ftrace.target.tid, "tid", + "trace on existing thread id (exclusive to --pid)"), OPT_INCR('v', "verbose", &verbose, "be more verbose"), OPT_BOOLEAN('a', "all-cpus", &ftrace.target.system_wide, -- 2.25.1
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