Commit-ID: cfd70a26aadf0a9af80bbce035e5760736727a94 Gitweb: http://git.kernel.org/tip/cfd70a26aadf0a9af80bbce035e5760736727a94 Author: Arnaldo Carvalho de Melo <a...@redhat.com> AuthorDate: Sat, 21 Feb 2015 10:09:55 -0800 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Sun, 22 Feb 2015 22:14:25 -0300
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.hun...@intel.com> Cc: Borislav Petkov <b...@suse.de> Cc: David Ahern <dsah...@gmail.com> Cc: Don Zickus <dzic...@redhat.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: Jiri Olsa <jo...@redhat.com> Cc: Mike Galbraith <efa...@gmx.de> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Stephane Eranian <eran...@google.com> Link: http://lkml.kernel.org/n/tip-byoia9dzu4gmkdv87etnd...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/util/evlist.c | 13 +++++++++++++ tools/perf/util/evlist.h | 1 + 2 files changed, 14 insertions(+) diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c index a8b2c57..39302a4 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 c94a9e0..715fa3a 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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
