perf evlist: Introduce set_filter() method
To apply a filter to all the evsels in an evlist.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-v9x3q9rv4caxtox7wtjpchq5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index c3ec787..ae89686 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -668,30 +668,37 @@
int perf_evlist__apply_filters(struct perf_evlist *evlist)
{
- const struct thread_map *threads = evlist->threads;
- const struct cpu_map *cpus = evlist->cpus;
struct perf_evsel *evsel;
- char *filter;
- int thread;
- int cpu;
- int err;
- int fd;
+ int err = 0;
+ const int ncpus = cpu_map__nr(evlist->cpus),
+ nthreads = evlist->threads->nr;
list_for_each_entry(evsel, &evlist->entries, node) {
- filter = evsel->filter;
- if (!filter)
+ if (evsel->filter == NULL)
continue;
- for (cpu = 0; cpu < cpus->nr; cpu++) {
- for (thread = 0; thread < threads->nr; thread++) {
- fd = FD(evsel, cpu, thread);
- err = ioctl(fd, PERF_EVENT_IOC_SET_FILTER, filter);
- if (err)
- return err;
- }
- }
+
+ err = perf_evsel__set_filter(evsel, ncpus, nthreads, evsel->filter);
+ if (err)
+ break;
}
- return 0;
+ return err;
+}
+
+int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter)
+{
+ struct perf_evsel *evsel;
+ int err = 0;
+ const int ncpus = cpu_map__nr(evlist->cpus),
+ nthreads = evlist->threads->nr;
+
+ list_for_each_entry(evsel, &evlist->entries, node) {
+ err = perf_evsel__set_filter(evsel, ncpus, nthreads, filter);
+ if (err)
+ break;
+ }
+
+ return err;
}
bool perf_evlist__valid_sample_type(struct perf_evlist *evlist)