Commit 02266a2d authored Jul 21, 2019 by Jiri Olsa Committed by Arnaldo Carvalho de Melo Jul 29, 2019

libperf: Add perf_evsel__enable/disable test



Add simple perf_evsel enable/disable test together with evsel counter
reading interface.

Committer testing:

  # make -C tools/perf/lib tests
  make: Entering directory '/home/acme/git/perf/tools/perf/lib'
    LINK     test-cpumap-a
    LINK     test-threadmap-a
    LINK     test-evlist-a
    LINK     test-evsel-a
    LINK     test-cpumap-so
    LINK     test-threadmap-so
    LINK     test-evlist-so
    LINK     test-evsel-so
  running static:
  - running test-cpumap.c...OK
  - running test-threadmap.c...OK
  - running test-evlist.c...OK
  - running test-evsel.c...OK
  running dynamic:
  - running test-cpumap.c...OK
  - running test-threadmap.c...OK
  - running test-evlist.c...OK
  - running test-evsel.c...OK
  make: Leaving directory '/home/acme/git/perf/tools/perf/lib'
  #

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-79-jolsa@kernel.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 6bda376f

tools/perf/lib/tests/test-evsel.c

+43 −0

Original line number	Diff line number	Diff line
		@@ -70,12 +70,55 @@ 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_evsel *evsel;
		struct perf_event_attr attr = {
		.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);

		evsel = perf_evsel__new(&attr);
		__T("failed to create evsel", evsel);

		err = perf_evsel__open(evsel, NULL, threads);
		__T("failed to open evsel", err == 0);

		perf_evsel__read(evsel, 0, 0, &counts);
		__T("failed to read value for evsel", counts.val == 0);

		err = perf_evsel__enable(evsel);
		__T("failed to enable evsel", err == 0);

		perf_evsel__read(evsel, 0, 0, &counts);
		__T("failed to read value for evsel", counts.val != 0);

		err = perf_evsel__disable(evsel);
		__T("failed to enable evsel", err == 0);

		perf_evsel__close(evsel);
		perf_evsel__delete(evsel);

		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;

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