Messages in this thread Patch in this message | | | Date | Wed, 26 Jul 2017 10:13:06 -0700 | From | tip-bot for Kan Liang <> | Subject | [tip:perf/core] perf intel-pt: Set no_aux_samples for the tracking event |
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Commit-ID: 69d8bd8aa7d8906a1e922ae884d97f0bd7f1b269 Gitweb: http://git.kernel.org/tip/69d8bd8aa7d8906a1e922ae884d97f0bd7f1b269 Author: Kan Liang <kan.liang@intel.com> AuthorDate: Fri, 30 Jun 2017 10:16:55 -0400 Committer: Arnaldo Carvalho de Melo <acme@redhat.com> CommitDate: Thu, 20 Jul 2017 09:55:50 -0300
perf intel-pt: Set no_aux_samples for the tracking event
The reason of introducing the tracking event (a dummy software event) is to collect side-band information. Additional sampling is wasteful. no_aux_samples should be set for tracking event.
Signed-off-by: Kan Liang <kan.liang@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20170630141656.1626-1-kan.liang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/arch/x86/util/intel-pt.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index 9535be5..4a461e8 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -752,6 +752,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr, tracking_evsel->attr.freq = 0; tracking_evsel->attr.sample_period = 1; + tracking_evsel->no_aux_samples = true; if (need_immediate) tracking_evsel->immediate = true;
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