Messages in this thread Patch in this message | | | Date | Mon, 17 Jun 2019 12:21:34 -0700 | From | tip-bot for Mathieu Poirier <> | Subject | [tip:perf/core] perf cs-etm: Configure SWITCH_EVENTS in CPU-wide mode |
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Commit-ID: e5993c42e8bb8dd90eb81a05fb58d5aa243325dd Gitweb: https://git.kernel.org/tip/e5993c42e8bb8dd90eb81a05fb58d5aa243325dd Author: Mathieu Poirier <mathieu.poirier@linaro.org> AuthorDate: Fri, 24 May 2019 11:34:54 -0600 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> 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@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190524173508.29044-4-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- 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) {
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