Messages in this thread Patch in this message | | | Date | Thu, 26 Feb 2015 03:31:31 -0800 | From | tip-bot for Arnaldo Carvalho de Melo <> | Subject | [tip:perf/core] perf evlist: Introduce set_filter_pid method |
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Commit-ID: cfd70a26aadf0a9af80bbce035e5760736727a94 Gitweb: http://git.kernel.org/tip/cfd70a26aadf0a9af80bbce035e5760736727a94 Author: Arnaldo Carvalho de Melo <acme@redhat.com> AuthorDate: Sat, 21 Feb 2015 10:09:55 -0800 Committer: Arnaldo Carvalho de Melo <acme@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.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> --- 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);
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