diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-02-21 10:09:55 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-02-22 22:14:25 -0300 |
| commit | cfd70a26aadf0a9af80bbce035e5760736727a94 (patch) | |
| tree | 0455b6b09cd2fc2ee9b61a725d0e47b2c270a220 | |
| parent | 0808921a14ffa170186288508c807f2166b7d8df (diff) | |
perf evlist: Introduce set_filter_pid method
To filter out events for a certain pid, for instance, when tracing
system wide, so that the tracer itself doesn't creates an event loop.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-byoia9dzu4gmkdv87etnd9zf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/evlist.c | 13 | ||||
| -rw-r--r-- | tools/perf/util/evlist.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index a8b2c5726aba..39302a455a58 100644 --- a/tools/perf/util/evlist.c +++ b/tools/perf/util/evlist.c @@ -1085,6 +1085,19 @@ int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter) return err; } +int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid) +{ + char *filter; + int ret; + + if (asprintf(&filter, "common_pid != %d", pid) < 0) + return -1; + + ret = perf_evlist__set_filter(evlist, filter); + free(filter); + return ret; +} + bool perf_evlist__valid_sample_type(struct perf_evlist *evlist) { struct perf_evsel *pos; diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h index c94a9e03ecf1..715fa3a296f4 100644 --- a/tools/perf/util/evlist.h +++ b/tools/perf/util/evlist.h @@ -77,6 +77,7 @@ int perf_evlist__add_newtp(struct perf_evlist *evlist, const char *sys, const char *name, void *handler); int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter); +int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid); struct perf_evsel * perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id); |