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5aa45cc535
Add a stress test for context switching of the ZA register state based on the similar tests Dave Martin wrote for FPSIMD and SVE registers. The test loops indefinitely writing a data pattern to ZA then reading it back and verifying that it's what was expected. Unlike the other tests we manually assemble the SME instructions since at present no released toolchain has SME support integrated. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-35-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
689 B
689 B
#!/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\ $log
./za-test >$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