[PATCH 77/79] libperf: Add perf_evlist__enable/disable test

[Jiri Olsa]

Add simple perf_evlist enable/disable test together with
evlist counter reading interface.

Link: http://lkml.kernel.org/n/tip-6hfivpokxx49knjdtg1hc...@git.kernel.org
Signed-off-by: Jiri Olsa <jo...@kernel.org>
---
 tools/perf/lib/tests/test-evlist.c | 63 ++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/tools/perf/lib/tests/test-evlist.c 
b/tools/perf/lib/tests/test-evlist.c
index f24c531afcb6..4e1407f20ffd 100644
--- a/tools/perf/lib/tests/test-evlist.c
+++ b/tools/perf/lib/tests/test-evlist.c
@@ -111,12 +111,75 @@ static int test_stat_thread(void)
        return 0;
 }
 
+static int test_stat_thread_enable(void)
+{
+       struct perf_counts_values counts = { .val = 0 };
+       struct perf_thread_map *threads;
+       struct perf_evlist *evlist;
+       struct perf_evsel *evsel;
+       struct perf_event_attr attr1 = {
+               .type     = PERF_TYPE_SOFTWARE,
+               .config   = PERF_COUNT_SW_CPU_CLOCK,
+               .disabled = 1,
+       };
+       struct perf_event_attr attr2 = {
+               .type     = PERF_TYPE_SOFTWARE,
+               .config   = PERF_COUNT_SW_TASK_CLOCK,
+               .disabled = 1,
+       };
+       int err;
+
+       threads = perf_thread_map__new_dummy();
+       __T("failed to create threads", threads);
+
+       perf_thread_map__set_pid(threads, 0, 0);
+
+       evlist = perf_evlist__new();
+       __T("failed to create evlist", evlist);
+
+       evsel = perf_evsel__new(&attr1);
+       __T("failed to create evsel1", evsel);
+
+       perf_evlist__add(evlist, evsel);
+
+       evsel = perf_evsel__new(&attr2);
+       __T("failed to create evsel2", evsel);
+
+       perf_evlist__add(evlist, evsel);
+
+       perf_evlist__set_maps(evlist, NULL, threads);
+
+       err = perf_evlist__open(evlist);
+       __T("failed to open evsel", err == 0);
+
+       perf_evlist__for_each_evsel(evlist, evsel) {
+               perf_evsel__read(evsel, 0, 0, &counts);
+               __T("failed to read value for evsel", counts.val == 0);
+       }
+
+       perf_evlist__enable(evlist);
+
+       perf_evlist__for_each_evsel(evlist, evsel) {
+               perf_evsel__read(evsel, 0, 0, &counts);
+               __T("failed to read value for evsel", counts.val != 0);
+       }
+
+       perf_evlist__disable(evlist);
+
+       perf_evlist__close(evlist);
+       perf_evlist__delete(evlist);
+
+       perf_thread_map__put(threads);
+       return 0;
+}
+
 int main(int argc, char **argv)
 {
        __T_START;
 
        test_stat_cpu();
        test_stat_thread();
+       test_stat_thread_enable();
 
        __T_OK;
        return 0;
-- 
2.21.0