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101 lines
1.7 KiB
101 lines
1.7 KiB
#!/bin/bash |
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# SPDX-License-Identifier: GPL-2.0 |
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# Kselftest framework requirement - SKIP code is 4. |
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ksft_skip=4 |
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stress_fork() |
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{ |
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while true ; do |
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/usr/bin/true |
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sleep 0.01 |
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done |
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} |
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stress_subsys() |
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{ |
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local verb=+ |
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while true ; do |
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echo $verb$subsys_ctrl >$sysfs/cgroup.subtree_control |
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[ $verb = "+" ] && verb=- || verb=+ |
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# incommensurable period with other stresses |
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sleep 0.011 |
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done |
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} |
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init_and_check() |
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{ |
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sysfs=`mount -t cgroup2 | head -1 | awk '{ print $3 }'` |
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if [ ! -d "$sysfs" ]; then |
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echo "Skipping: cgroup2 is not mounted" >&2 |
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exit $ksft_skip |
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fi |
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if ! echo +$subsys_ctrl >$sysfs/cgroup.subtree_control ; then |
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echo "Skipping: cannot enable $subsys_ctrl in $sysfs" >&2 |
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exit $ksft_skip |
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fi |
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if ! echo -$subsys_ctrl >$sysfs/cgroup.subtree_control ; then |
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echo "Skipping: cannot disable $subsys_ctrl in $sysfs" >&2 |
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exit $ksft_skip |
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fi |
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} |
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declare -a stresses |
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declare -a stress_pids |
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duration=5 |
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rc=0 |
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subsys_ctrl=cpuset |
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sysfs= |
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while getopts c:d:hs: opt; do |
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case $opt in |
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c) |
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subsys_ctrl=$OPTARG |
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;; |
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d) |
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duration=$OPTARG |
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;; |
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h) |
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echo "Usage $0 [ -s stress ] ... [ -d duration ] [-c controller] cmd args .." |
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echo -e "\t default duration $duration seconds" |
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echo -e "\t default controller $subsys_ctrl" |
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exit |
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;; |
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s) |
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func=stress_$OPTARG |
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if [ "x$(type -t $func)" != "xfunction" ] ; then |
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echo "Unknown stress $OPTARG" |
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exit 1 |
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fi |
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stresses+=($func) |
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;; |
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esac |
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done |
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shift $((OPTIND - 1)) |
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init_and_check |
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for s in ${stresses[*]} ; do |
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$s & |
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stress_pids+=($!) |
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done |
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time=0 |
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start=$(date +%s) |
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while [ $time -lt $duration ] ; do |
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$* |
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rc=$? |
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[ $rc -eq 0 ] || break |
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time=$(($(date +%s) - $start)) |
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done |
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for pid in ${stress_pids[*]} ; do |
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kill -SIGTERM $pid |
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wait $pid |
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done |
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exit $rc
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