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linux-yocto/tools/testing/selftests/arm64/fp/sve-stress
Mark Brown 25f47e3eb6 selftests: arm64: Add wrapper scripts for stress tests 
Add wrapper scripts which invoke fpsimd-test and sve-test with several
copies per CPU such that the context switch code will be appropriately
exercised.

Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200819114837.51466-6-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-18 14:17:58 +01:00

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#!/bin/bash

SPDX-License-Identifier: GPL-2.0-only

Copyright (C) 2015-2019 ARM Limited.

Original author: Dave Martin Dave.Martin@arm.com

set -ue

NR_CPUS=nproc

pids= logs=

cleanup () { trap - INT TERM CHLD set +e

if [ -n "$pids" ]; then
	kill $pids
	wait $pids
	pids=
fi

if [ -n "$logs" ]; then
	cat $logs
	rm $logs
	logs=
fi

}

interrupt () { cleanup exit 0 }

child_died () { cleanup exit 1 }

trap interrupt INT TERM EXIT

for x in seq 0 $((NR_CPUS * 4)); do log=mktemp logs=$logs\ $log ./sve-test >$log & pids=pids\ ! done

Wait for all child processes to be created:

sleep 10

while :; do kill -USR1 $pids done & pids=pids\ !

wait

exit 1