name : test_arm_spe_fork.sh #!/bin/sh # Check Arm SPE doesn't hang when there are forks # SPDX-License-Identifier: GPL-2.0 # German Gomez <german.gomez@arm.com>, 2022 skip_if_no_arm_spe_event() { perf list | grep -E -q 'arm_spe_[0-9]+//' && return 0 return 2 } skip_if_no_arm_spe_event || exit 2 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) cleanup_files() { echo "Cleaning up files..." rm -f ${PERF_RECORD_LOG} rm -f ${PERF_DATA} } trap cleanup_files EXIT TERM INT echo "Recording workload..." perf record -o ${PERF_DATA} -e arm_spe/period=65536/ -vvv -- $TEST_PROGRAM > ${PERF_RECORD_LOG} 2>&1 & PERFPID=$! # Check if perf hangs by checking the perf-record logs. sleep 1 log0=$(wc -l $PERF_RECORD_LOG) echo Log lines = $log0 sleep 1 log1=$(wc -l $PERF_RECORD_LOG) echo Log lines after 1 second = $log1 kill $PERFPID wait $PERFPID if [ "$log0" = "$log1" ]; then echo "SPE hang test: FAIL" exit 1 else echo "SPE hang test: PASS" fi exit 0