libperf evsel: Add perf_evsel__enable_thread()

Add perf_evsel__enable_thread() as a counterpart to
perf_evsel__enable_cpu(), to enable all events for a thread.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20220506122601.367589-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/lib/perf/evsel.c b/tools/lib/perf/evsel.c
index 20ae9f5..c1d5867 100644 (file)
--- a/tools/lib/perf/evsel.c
+++ b/tools/lib/perf/evsel.c
@@ -360,6 +360,21 @@ int perf_evsel__enable_cpu(struct perf_evsel *evsel, int cpu_map_idx)
        return perf_evsel__run_ioctl(evsel, PERF_EVENT_IOC_ENABLE, NULL, cpu_map_idx);
 }
 
+int perf_evsel__enable_thread(struct perf_evsel *evsel, int thread)
+{
+       struct perf_cpu cpu __maybe_unused;
+       int idx;
+       int err;
+
+       perf_cpu_map__for_each_cpu(cpu, idx, evsel->cpus) {
+               err = perf_evsel__ioctl(evsel, PERF_EVENT_IOC_ENABLE, NULL, idx, thread);
+               if (err)
+                       return err;
+       }
+
+       return 0;
+}
+
 int perf_evsel__enable(struct perf_evsel *evsel)
 {
        int i;

diff --git a/tools/lib/perf/include/perf/evsel.h b/tools/lib/perf/include/perf/evsel.h
index 2a9516b..699c0ed 100644 (file)
--- a/tools/lib/perf/include/perf/evsel.h
+++ b/tools/lib/perf/include/perf/evsel.h
@@ -36,6 +36,7 @@ LIBPERF_API int perf_evsel__read(struct perf_evsel *evsel, int cpu_map_idx, int
                                 struct perf_counts_values *count);
 LIBPERF_API int perf_evsel__enable(struct perf_evsel *evsel);
 LIBPERF_API int perf_evsel__enable_cpu(struct perf_evsel *evsel, int cpu_map_idx);
+LIBPERF_API int perf_evsel__enable_thread(struct perf_evsel *evsel, int thread);
 LIBPERF_API int perf_evsel__disable(struct perf_evsel *evsel);
 LIBPERF_API int perf_evsel__disable_cpu(struct perf_evsel *evsel, int cpu_map_idx);
 LIBPERF_API struct perf_cpu_map *perf_evsel__cpus(struct perf_evsel *evsel);