Commit-ID: e5993c42e8bb8dd90eb81a05fb58d5aa243325dd
Gitweb: https://git.kernel.org/tip/e5993c42e8bb8dd90eb81a05fb58d5aa243325dd
Author: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
AuthorDate: Fri, 24 May 2019 11:34:54 -0600
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 10 Jun 2019 15:50:01 -0300
perf cs-etm: Configure SWITCH_EVENTS in CPU-wide mode
Ask the perf core to generate an event when processes are swapped in/out
of context. That way proper action can be taken by the decoding code
when faced with such event.
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Tested-by: Leo Yan <leo.yan@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Suzuki Poulouse <suzuki.poulose@xxxxxxx>
Cc: coresight@xxxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/20190524173508.29044-4-mathieu.poirier@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/arch/arm/util/cs-etm.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
index be1e4f20affa..cc7f1cd23b14 100644
--- a/tools/perf/arch/arm/util/cs-etm.c
+++ b/tools/perf/arch/arm/util/cs-etm.c
@@ -257,6 +257,9 @@ static int cs_etm_recording_options(struct auxtrace_record *itr,
ptr->evlist = evlist;
ptr->snapshot_mode = opts->auxtrace_snapshot_mode;
+ if (perf_can_record_switch_events())
+ opts->record_switch_events = true;
+
evlist__for_each_entry(evlist, evsel) {
if (evsel->attr.type == cs_etm_pmu->type) {
if (cs_etm_evsel) {
|