1 #!/bin/sh
2 # Check Arm SPE doesn't hang when there are forks
3
4 # SPDX-License-Identifier: GPL-2.0
5 # German Gomez <german.gomez@arm.com>, 2022
6
7 skip_if_no_arm_spe_event() {
8 perf list | grep -E -q 'arm_spe_[0-9]+//' && return 0
9 return 2
10 }
11
12 skip_if_no_arm_spe_event || exit 2
13
14 TEST_PROGRAM="perf test -w sqrtloop 10"
15 PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
16 PERF_RECORD_LOG=$(mktemp /tmp/__perf_test.log.XXXXX)
17
18 cleanup_files()
19 {
20 echo "Cleaning up files..."
21 rm -f ${PERF_RECORD_LOG}
22 rm -f ${PERF_DATA}
23 }
24
25 trap cleanup_files EXIT TERM INT
26
27 echo "Recording workload..."
28 perf record -o ${PERF_DATA} -e arm_spe/period=65536/ -vvv -- $TEST_PROGRAM > ${PERF_RECORD_LOG} 2>&1 &
29 PERFPID=$!
30
31 # Check if perf hangs by checking the perf-record logs.
32 sleep 1
33 log0=$(wc -l $PERF_RECORD_LOG)
34 echo Log lines = $log0
35 sleep 1
36 log1=$(wc -l $PERF_RECORD_LOG)
37 echo Log lines after 1 second = $log1
38
39 kill $PERFPID
40 wait $PERFPID
41
42 if [ "$log0" = "$log1" ];
43 then
44 echo "SPE hang test: FAIL"
45 exit 1
46 else
47 echo "SPE hang test: PASS"
48 fi
49
50 exit 0
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