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)
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 > ${PERF_RECORD_LOG} 2>&1 &
PERFPID=$!
kill $PERFPID
wait $PERFPID
-# test program may leave an orphan process running the workload
-killall $(basename $TEST_PROGRAM)
if [ "$log0" = "$log1" ];
then