perf test: Avoid system wide when not privileged

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@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20230930060206.2353141-1-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

diff --git a/tools/perf/tests/shell/stat_all_metricgroups.sh b/tools/perf/tests/shell/stat_all_metricgroups.sh
index cb35e48..f3e3056 100755 (executable)
--- 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