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.

Reviewed-by: German Gomez <german.gomez@arm.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220701230932.1000495-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/tests/shell/test_arm_spe.sh b/tools/perf/tests/shell/test_arm_spe.sh
index e59044e..0d47479 100755 (executable)
--- a/tools/perf/tests/shell/test_arm_spe.sh
+++ b/tools/perf/tests/shell/test_arm_spe.sh
@@ -23,17 +23,20 @@ glb_err=0
 cleanup_files()
 {
        rm -f ${perfdata}
+       rm -f ${perfdata}.old
        exit $glb_err
 }
 
 trap cleanup_files exit term int
 
 arm_spe_report() {
-       if [ $2 != 0 ]; then
+       if [ $2 = 0 ]; then
+               echo "$1: PASS"
+       elif [ $2 = 2 ]; then
+               echo "$1: SKIPPED"
+       else
                echo "$1: FAIL"
                glb_err=$2
-       else
-               echo "$1: PASS"
        fi
 }
 
@@ -85,5 +88,26 @@ 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 - -e dummy -a -B true > /dev/null 2>&1
+       if [ $? != 0 ]; then
+               arm_spe_report "SPE system-wide testing" 2
+               return
+       fi
+
+       perf record -o ${perfdata} -e arm_spe// -a --no-bpf-event \
+               -- dd if=/dev/zero of=/dev/null count=100000 > /dev/null 2>&1
+
+       perf_script_samples dd &&
+       perf_report_samples dd
+
+       err=$?
+       arm_spe_report "SPE system-wide testing" $err
+}
+
 arm_spe_snapshot_test
+arm_spe_system_wide_test
+
 exit $glb_err