diff options
| -rw-r--r-- | tools/testing/selftests/cgroup/Makefile | 2 | ||||
| -rwxr-xr-x | tools/testing/selftests/cgroup/test_stress.sh | 4 | ||||
| -rwxr-xr-x | tools/testing/selftests/cgroup/with_stress.sh | 101 |
3 files changed, 107 insertions, 0 deletions
diff --git a/tools/testing/selftests/cgroup/Makefile b/tools/testing/selftests/cgroup/Makefile index 1c9179400be0..66aafe1f5746 100644 --- a/tools/testing/selftests/cgroup/Makefile +++ b/tools/testing/selftests/cgroup/Makefile @@ -3,6 +3,8 @@ CFLAGS += -Wall -pthread all: +TEST_FILES := with_stress.sh +TEST_PROGS := test_stress.sh TEST_GEN_PROGS = test_memcontrol TEST_GEN_PROGS += test_core TEST_GEN_PROGS += test_freezer diff --git a/tools/testing/selftests/cgroup/test_stress.sh b/tools/testing/selftests/cgroup/test_stress.sh new file mode 100755 index 000000000000..15d9d5896394 --- /dev/null +++ b/tools/testing/selftests/cgroup/test_stress.sh @@ -0,0 +1,4 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +./with_stress.sh -s subsys -s fork ./test_core diff --git a/tools/testing/selftests/cgroup/with_stress.sh b/tools/testing/selftests/cgroup/with_stress.sh new file mode 100755 index 000000000000..e28c35008f5b --- /dev/null +++ b/tools/testing/selftests/cgroup/with_stress.sh @@ -0,0 +1,101 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 + +stress_fork() +{ + while true ; do + /usr/bin/true + sleep 0.01 + done +} + +stress_subsys() +{ + local verb=+ + while true ; do + echo $verb$subsys_ctrl >$sysfs/cgroup.subtree_control + [ $verb = "+" ] && verb=- || verb=+ + # incommensurable period with other stresses + sleep 0.011 + done +} + +init_and_check() +{ + sysfs=`mount -t cgroup2 | head -1 | awk '{ print $3 }'` + if [ ! -d "$sysfs" ]; then + echo "Skipping: cgroup2 is not mounted" >&2 + exit $ksft_skip + fi + + if ! echo +$subsys_ctrl >$sysfs/cgroup.subtree_control ; then + echo "Skipping: cannot enable $subsys_ctrl in $sysfs" >&2 + exit $ksft_skip + fi + + if ! echo -$subsys_ctrl >$sysfs/cgroup.subtree_control ; then + echo "Skipping: cannot disable $subsys_ctrl in $sysfs" >&2 + exit $ksft_skip + fi +} + +declare -a stresses +declare -a stress_pids +duration=5 +rc=0 +subsys_ctrl=cpuset +sysfs= + +while getopts c:d:hs: opt; do + case $opt in + c) + subsys_ctrl=$OPTARG + ;; + d) + duration=$OPTARG + ;; + h) + echo "Usage $0 [ -s stress ] ... [ -d duration ] [-c controller] cmd args .." + echo -e "\t default duration $duration seconds" + echo -e "\t default controller $subsys_ctrl" + exit + ;; + s) + func=stress_$OPTARG + if [ "x$(type -t $func)" != "xfunction" ] ; then + echo "Unknown stress $OPTARG" + exit 1 + fi + stresses+=($func) + ;; + esac +done +shift $((OPTIND - 1)) + +init_and_check + +for s in ${stresses[*]} ; do + $s & + stress_pids+=($!) +done + + +time=0 +start=$(date +%s) + +while [ $time -lt $duration ] ; do + $* + rc=$? + [ $rc -eq 0 ] || break + time=$(($(date +%s) - $start)) +done + +for pid in ${stress_pids[*]} ; do + kill -SIGTERM $pid + wait $pid +done + +exit $rc |