perf evsel: Introduce disable() method

Adding perf_evsel__disable function to have complement for
perf_evsel__enable function. Both will be used in following patch to
factor perf_evlist__(enable|disable).

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1449133606-14429-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
(cherry picked from commit e98a4cbb01e0ba1110eba5166a425b3eab9b2244)

diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 397fb4ed3c97b6deffeffd8f69bbceb886ac58ea..1eb4d02e3968ead42d127439b39acb3d825451c7 100644 (file)
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -988,6 +988,16 @@ int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads)
                                     0);
 }
 
+int perf_evsel__disable(struct perf_evsel *evsel)
+{
+       int nthreads = thread_map__nr(evsel->threads);
+       int ncpus = cpu_map__nr(evsel->cpus);
+
+       return perf_evsel__run_ioctl(evsel, ncpus, nthreads,
+                                    PERF_EVENT_IOC_DISABLE,
+                                    0);
+}
+
 int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads)
 {
        if (ncpus == 0 || nthreads == 0)

diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 0e49bd742c639c02d1aef18f421c0204faa95823..eaa4c733c97618fe639ca0ec38bac746840058d8 100644 (file)
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -228,6 +228,7 @@ int perf_evsel__append_filter(struct perf_evsel *evsel,
 int perf_evsel__apply_filter(struct perf_evsel *evsel, int ncpus, int nthreads,
                             const char *filter);
 int perf_evsel__enable(struct perf_evsel *evsel, int ncpus, int nthreads);
+int perf_evsel__disable(struct perf_evsel *evsel);
 
 int perf_evsel__open_per_cpu(struct perf_evsel *evsel,
                             struct cpu_map *cpus);