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Commit be199ada authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf evlist: Introduce set_filter_pids method 

We need to filter multiple pids in trace, i.e. trace itself,
gnome-terminal, X.org, etc.

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-frtpkg7qapqwf7asa35wf8am@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 241b057c

tools/perf/util/evlist.c

+23 −4
Original line number Diff line number Diff line
@@ -1085,19 +1085,38 @@ 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)

int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids)

{

	char *filter;

	int ret;

	int ret = -1;

	size_t i;



	if (asprintf(&filter, "common_pid != %d", pid) < 0)

	for (i = 0; i < npids; ++i) {

		if (i == 0) {

			if (asprintf(&filter, "common_pid != %d", pids[i]) < 0)

				return -1;

		} else {

			char *tmp;



			if (asprintf(&tmp, "%s && common_pid != %d", filter, pids[i]) < 0)

				goto out_free;



			free(filter);

			filter = tmp;

		}

	}



	ret = perf_evlist__set_filter(evlist, filter);

out_free:

	free(filter);

	return ret;

}



int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid)

{

	return perf_evlist__set_filter_pids(evlist, 1, &pid);

}



bool perf_evlist__valid_sample_type(struct perf_evlist *evlist)

{

	struct perf_evsel *pos;

tools/perf/util/evlist.h

+1 −0
Original line number Diff line number Diff line
@@ -78,6 +78,7 @@ int perf_evlist__add_newtp(struct perf_evlist *evlist, 


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);

int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids);



struct perf_evsel *

perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);