[PATCH v1] perf test: Avoid system wide when not privileged
From: Ian Rogers
Date: Sat Sep 30 2023 - 02:03:50 EST
Switch the test program to sleep that makes more sense for system wide
events. Only enable system wide when root or not paranoid. This avoids
failures under some testing conditions like ARM cloud.
Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/tests/shell/stat_all_metricgroups.sh | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/tools/perf/tests/shell/stat_all_metricgroups.sh b/tools/perf/tests/shell/stat_all_metricgroups.sh
index cb35e488809a..f3e305649e2c 100755
--- a/tools/perf/tests/shell/stat_all_metricgroups.sh
+++ b/tools/perf/tests/shell/stat_all_metricgroups.sh
@@ -4,9 +4,21 @@
set -e
-for m in $(perf list --raw-dump metricgroups); do
+function ParanoidAndNotRoot()
+{
+ [ "$(id -u)" != 0 ] && [ "$(cat /proc/sys/kernel/perf_event_paranoid)" -gt $1 ]
+}
+
+system_wide_flag="-a"
+if ParanoidAndNotRoot 0
+then
+ system_wide_flag=""
+fi
+
+for m in $(perf list --raw-dump metricgroups)
+do
echo "Testing $m"
- perf stat -M "$m" -a true
+ perf stat -M "$m" $system_wide_flag sleep 0.01
done
exit 0
--
2.42.0.582.g8ccd20d70d-goog