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Message-ID: <tip-69d8bd8aa7d8906a1e922ae884d97f0bd7f1b269@git.kernel.org>
Date: Wed, 26 Jul 2017 10:13:06 -0700
From: tip-bot for Kan Liang <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: tglx@...utronix.de, mingo@...nel.org, hpa@...or.com,
jolsa@...hat.com, linux-kernel@...r.kernel.org, acme@...hat.com,
alexander.shishkin@...ux.intel.com, peterz@...radead.org,
kan.liang@...el.com, ak@...ux.intel.com, adrian.hunter@...el.com
Subject: [tip:perf/core] perf intel-pt: Set no_aux_samples for the tracking
event
Commit-ID: 69d8bd8aa7d8906a1e922ae884d97f0bd7f1b269
Gitweb: http://git.kernel.org/tip/69d8bd8aa7d8906a1e922ae884d97f0bd7f1b269
Author: Kan Liang <kan.liang@...el.com>
AuthorDate: Fri, 30 Jun 2017 10:16:55 -0400
Committer: Arnaldo Carvalho de Melo <acme@...hat.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@...el.com>
Acked-by: Jiri Olsa <jolsa@...hat.com>
Cc: Adrian Hunter <adrian.hunter@...el.com>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/20170630141656.1626-1-kan.liang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.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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