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Diffstat (limited to 'tools/perf/util/evlist.c')
-rw-r--r--tools/perf/util/evlist.c42
1 files changed, 40 insertions, 2 deletions
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 5df4ca91bed3..b8727ae45e3b 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -246,7 +246,7 @@ void perf_evlist__disable(struct perf_evlist *evlist)
for (cpu = 0; cpu < nr_cpus; cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
- if (!perf_evsel__is_group_leader(pos))
+ if (!perf_evsel__is_group_leader(pos) || !pos->fd)
continue;
for (thread = 0; thread < nr_threads; thread++)
ioctl(FD(pos, cpu, thread),
@@ -264,7 +264,7 @@ void perf_evlist__enable(struct perf_evlist *evlist)
for (cpu = 0; cpu < nr_cpus; cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
- if (!perf_evsel__is_group_leader(pos))
+ if (!perf_evsel__is_group_leader(pos) || !pos->fd)
continue;
for (thread = 0; thread < nr_threads; thread++)
ioctl(FD(pos, cpu, thread),
@@ -273,6 +273,44 @@ void perf_evlist__enable(struct perf_evlist *evlist)
}
}
+int perf_evlist__disable_event(struct perf_evlist *evlist,
+ struct perf_evsel *evsel)
+{
+ int cpu, thread, err;
+
+ if (!evsel->fd)
+ return 0;
+
+ for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
+ for (thread = 0; thread < evlist->threads->nr; thread++) {
+ err = ioctl(FD(evsel, cpu, thread),
+ PERF_EVENT_IOC_DISABLE, 0);
+ if (err)
+ return err;
+ }
+ }
+ return 0;
+}
+
+int perf_evlist__enable_event(struct perf_evlist *evlist,
+ struct perf_evsel *evsel)
+{
+ int cpu, thread, err;
+
+ if (!evsel->fd)
+ return -EINVAL;
+
+ for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
+ for (thread = 0; thread < evlist->threads->nr; thread++) {
+ err = ioctl(FD(evsel, cpu, thread),
+ PERF_EVENT_IOC_ENABLE, 0);
+ if (err)
+ return err;
+ }
+ }
+ return 0;
+}
+
static int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
{
int nr_cpus = cpu_map__nr(evlist->cpus);