[PATCH 08/12] perf test: Replace arm spe fork test workload with sqrtloop

Namhyung Kim
2022-11-10T18:20:00Z

So that it can get rid of requirement of a compiler. I've also removed
killall as it'll kill perf process now and run the test workload for 10
sec instead.

Tested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/tests/shell/test_arm_spe_fork.sh | 44 +--------------------
1 file changed, 1 insertion(+), 43 deletions(-)

diff --git a/tools/perf/tests/shell/test_arm_spe_fork.sh b/tools/perf/tests/shell/test_arm_spe_fork.sh
index c920d3583d30..da810e1b2b9e 100755
--- a/tools/perf/tests/shell/test_arm_spe_fork.sh
+++ b/tools/perf/tests/shell/test_arm_spe_fork.sh
@@ -11,14 +11,7 @@ skip_if_no_arm_spe_event() {

skip_if_no_arm_spe_event || exit 2

-# skip if there's no compiler
-if ! [ -x "$(command -v cc)" ]; then
- echo "failed: no compiler, install gcc"
- exit 2
-fi
-
-TEST_PROGRAM_SOURCE=$(mktemp /tmp/__perf_test.program.XXXXX.c)
-TEST_PROGRAM=$(mktemp /tmp/__perf_test.program.XXXXX)
+TEST_PROGRAM="perf test -w sqrtloop 10"
PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
PERF_RECORD_LOG=$(mktemp /tmp/__perf_test.log.XXXXX)

@@ -27,43 +20,10 @@ cleanup_files()
echo "Cleaning up files..."
rm -f ${PERF_RECORD_LOG}
rm -f ${PERF_DATA}
- rm -f ${TEST_PROGRAM_SOURCE}
- rm -f ${TEST_PROGRAM}
}

trap cleanup_files exit term int

-# compile test program
-cat << EOF > $TEST_PROGRAM_SOURCE
-#include <math.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/wait.h>
-
-int workload() {
- while (1)
- sqrt(rand());
- return 0;
-}
-
-int main() {
- switch (fork()) {
- case 0:
- return workload();
- case -1:
- return 1;
- default:
- wait(NULL);
- }
- return 0;
-}
-EOF
-
-echo "Compiling test program..."
-CFLAGS="-lm"
-cc $TEST_PROGRAM_SOURCE $CFLAGS -o $TEST_PROGRAM || exit 1
-
echo "Recording workload..."
perf record -o ${PERF_DATA} -e arm_spe/period=65536/ -vvv -- $TEST_PROGRAM > ${PERF_RECORD_LOG} 2>&1 &
PERFPID=$!
@@ -78,8 +38,6 @@ echo Log lines after 1 second = $log1

kill $PERFPID
wait $PERFPID
-# test program may leave an orphan process running the workload
-killall $(basename $TEST_PROGRAM)

if [ "$log0" = "$log1" ];
then
--
2.38.1.493.g58b659f92b-goog