From: Kim Phillips <kim.phillips@arm.com>
To: Mathieu Poirier <mathieu.poirier@linaro.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] perf coresight: Remove superfluous check before use
Date: Thu, 15 Jun 2017 12:55:21 -0500 [thread overview]
Message-ID: <20170615125521.80cc128dc856bc1f2e61b730@arm.com> (raw)
cs_etm_evsel is guaranteed to be set at this point in the function.
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
---
tools/perf/arch/arm/util/cs-etm.c | 25 ++++++++++++-------------
1 file changed, 12 insertions(+), 13 deletions(-)
diff --git a/tools/perf/arch/arm/util/cs-etm.c b/tools/perf/arch/arm/util/cs-etm.c
index 29361d9b635a..8e1e9469caf2 100644
--- a/tools/perf/arch/arm/util/cs-etm.c
+++ b/tools/perf/arch/arm/util/cs-etm.c
@@ -202,19 +202,18 @@ static int cs_etm_recording_options(struct auxtrace_record *itr,
pr_debug2("%s snapshot size: %zu\n", CORESIGHT_ETM_PMU_NAME,
opts->auxtrace_snapshot_size);
- if (cs_etm_evsel) {
- /*
- * To obtain the auxtrace buffer file descriptor, the auxtrace
- * event must come first.
- */
- perf_evlist__to_front(evlist, cs_etm_evsel);
- /*
- * In the case of per-cpu mmaps, we need the CPU on the
- * AUX event.
- */
- if (!cpu_map__empty(cpus))
- perf_evsel__set_sample_bit(cs_etm_evsel, CPU);
- }
+ /*
+ * To obtain the auxtrace buffer file descriptor, the auxtrace
+ * event must come first.
+ */
+ perf_evlist__to_front(evlist, cs_etm_evsel);
+
+ /*
+ * In the case of per-cpu mmaps, we need the CPU on the
+ * AUX event.
+ */
+ if (!cpu_map__empty(cpus))
+ perf_evsel__set_sample_bit(cs_etm_evsel, CPU);
/* Add dummy event to keep tracking */
if (opts->full_auxtrace) {
--
2.11.0
next reply other threads:[~2017-06-15 17:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-15 17:55 Kim Phillips [this message]
2017-06-16 14:31 ` Mathieu Poirier
2017-06-16 16:13 ` Arnaldo Carvalho de Melo
2017-06-20 9:01 ` [tip:perf/core] " tip-bot for Kim Phillips
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