linux-kernel - [PATCH] perf test: Add ARM SPE system wide test

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Date:   Wed, 15 Jun 2022 12:07:35 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>,
        linux-perf-users@...r.kernel.org,
        John Garry <john.garry@...wei.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        German Gomez <german.gomez@....com>,
        Leo Yan <leo.yan@...aro.org>
Subject: [PATCH] perf test: Add ARM SPE system wide test

In the past it had a problem not setting the pid/tid on the sample
correctly when system-wide mode is used.  Although it's fixed now it'd
be nice if we have a test case for it.

Cc: German Gomez <german.gomez@....com>
Cc: Leo Yan <leo.yan@...aro.org>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/tests/shell/test_arm_spe.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/tools/perf/tests/shell/test_arm_spe.sh b/tools/perf/tests/shell/test_arm_spe.sh
index e59044edc406..b9c588ae393b 100755
--- a/tools/perf/tests/shell/test_arm_spe.sh
+++ b/tools/perf/tests/shell/test_arm_spe.sh
@@ -23,6 +23,7 @@ glb_err=0
 cleanup_files()
 {
 	rm -f ${perfdata}
+	rm -f ${perfdata}.old
 	exit $glb_err
 }
 
@@ -85,5 +86,19 @@ arm_spe_snapshot_test() {
 	arm_spe_report "SPE snapshot testing" $err
 }
 
+arm_spe_system_wide_test() {
+	echo "Recording trace with system-wide mode $perfdata"
+	perf record -o ${perfdata} -e arm_spe// -a \
+		-- dd if=/dev/zero of=/dev/null count=100000 > /dev/null 2>&1
+
+	perf_script_samples dd &&
+	perf_report_samples dd
+
+	err=$?
+	arm_spe_report "SPE system-wide testing" $err
+}
+
 arm_spe_snapshot_test
+arm_spe_system_wide_test
+
 exit $glb_err
-- 
2.36.1.476.g0c4daa206d-goog