linux-kernel - [tip:perf/core] perf coresight: Remove superfluous check before use

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Message-ID: <tip-0c788d4726c916544490c17cdbfd1ae2a6347fa8@git.kernel.org>
Date:   Tue, 20 Jun 2017 02:01:35 -0700
From:   tip-bot for Kim Phillips <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     kim.phillips@....com, mathieu.poirier@...aro.org,
        tglx@...utronix.de, hpa@...or.com, mingo@...nel.org,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        alexander.shishkin@...ux.intel.com, acme@...hat.com
Subject: [tip:perf/core] perf coresight: Remove superfluous check before use

Commit-ID:  0c788d4726c916544490c17cdbfd1ae2a6347fa8
Gitweb:     http://git.kernel.org/tip/0c788d4726c916544490c17cdbfd1ae2a6347fa8
Author:     Kim Phillips <kim.phillips@....com>
AuthorDate: Thu, 15 Jun 2017 12:55:21 -0500
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Mon, 19 Jun 2017 15:27:08 -0300

perf coresight: Remove superfluous check before use

The cs_etm_evsel variable is guaranteed to be set at this point in
cs_etm_recording_options().

Signed-off-by: Kim Phillips <kim.phillips@....com>
Acked-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: linux-arm-kernel@...ts.infradead.org
Link: http://lkml.kernel.org/r/20170615125521.80cc128dc856bc1f2e61b730@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.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 02a649b..7ce3d1a 100644
--- a/tools/perf/arch/arm/util/cs-etm.c
+++ b/tools/perf/arch/arm/util/cs-etm.c
@@ -203,19 +203,18 @@ 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) {