diff options
Diffstat (limited to 'tools/perf/util/evlist.c')
| -rw-r--r-- | tools/perf/util/evlist.c | 42 |
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); |