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Diffstat (limited to '')
| -rwxr-xr-x | tools/testing/selftests/zram/zram_lib.sh | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/tools/testing/selftests/zram/zram_lib.sh b/tools/testing/selftests/zram/zram_lib.sh new file mode 100755 index 000000000..21ec1966d --- /dev/null +++ b/tools/testing/selftests/zram/zram_lib.sh @@ -0,0 +1,269 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0-or-later +# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved. +# +# Author: Alexey Kodanev <alexey.kodanev@oracle.com> +# Modified: Naresh Kamboju <naresh.kamboju@linaro.org> + +dev_makeswap=-1 +dev_mounted=-1 +dev_start=0 +dev_end=-1 +module_load=-1 +sys_control=-1 +# Kselftest framework requirement - SKIP code is 4. +ksft_skip=4 +kernel_version=`uname -r | cut -d'.' -f1,2` +kernel_major=${kernel_version%.*} +kernel_minor=${kernel_version#*.} + +trap INT + +check_prereqs() +{ + local msg="skip all tests:" + local uid=$(id -u) + + if [ $uid -ne 0 ]; then + echo $msg must be run as root >&2 + exit $ksft_skip + fi +} + +kernel_gte() +{ + major=${1%.*} + minor=${1#*.} + + if [ $kernel_major -gt $major ]; then + return 0 + elif [[ $kernel_major -eq $major && $kernel_minor -ge $minor ]]; then + return 0 + fi + + return 1 +} + +zram_cleanup() +{ + echo "zram cleanup" + local i= + for i in $(seq $dev_start $dev_makeswap); do + swapoff /dev/zram$i + done + + for i in $(seq $dev_start $dev_mounted); do + umount /dev/zram$i + done + + for i in $(seq $dev_start $dev_end); do + echo 1 > /sys/block/zram${i}/reset + rm -rf zram$i + done + + if [ $sys_control -eq 1 ]; then + for i in $(seq $dev_start $dev_end); do + echo $i > /sys/class/zram-control/hot_remove + done + fi + + if [ $module_load -eq 1 ]; then + rmmod zram > /dev/null 2>&1 + fi +} + +zram_load() +{ + echo "create '$dev_num' zram device(s)" + + # zram module loaded, new kernel + if [ -d "/sys/class/zram-control" ]; then + echo "zram modules already loaded, kernel supports" \ + "zram-control interface" + dev_start=$(ls /dev/zram* | wc -w) + dev_end=$(($dev_start + $dev_num - 1)) + sys_control=1 + + for i in $(seq $dev_start $dev_end); do + cat /sys/class/zram-control/hot_add > /dev/null + done + + echo "all zram devices (/dev/zram$dev_start~$dev_end" \ + "successfully created" + return 0 + fi + + # detect old kernel or built-in + modprobe zram num_devices=$dev_num + if [ ! -d "/sys/class/zram-control" ]; then + if grep -q '^zram' /proc/modules; then + rmmod zram > /dev/null 2>&1 + if [ $? -ne 0 ]; then + echo "zram module is being used on old kernel" \ + "without zram-control interface" + exit $ksft_skip + fi + else + echo "test needs CONFIG_ZRAM=m on old kernel without" \ + "zram-control interface" + exit $ksft_skip + fi + modprobe zram num_devices=$dev_num + fi + + module_load=1 + dev_end=$(($dev_num - 1)) + echo "all zram devices (/dev/zram0~$dev_end) successfully created" +} + +zram_max_streams() +{ + echo "set max_comp_streams to zram device(s)" + + kernel_gte 4.7 + if [ $? -eq 0 ]; then + echo "The device attribute max_comp_streams was"\ + "deprecated in 4.7" + return 0 + fi + + local i=$dev_start + for max_s in $zram_max_streams; do + local sys_path="/sys/block/zram${i}/max_comp_streams" + echo $max_s > $sys_path || \ + echo "FAIL failed to set '$max_s' to $sys_path" + sleep 1 + local max_streams=$(cat $sys_path) + + [ "$max_s" -ne "$max_streams" ] && \ + echo "FAIL can't set max_streams '$max_s', get $max_stream" + + i=$(($i + 1)) + echo "$sys_path = '$max_streams'" + done + + echo "zram max streams: OK" +} + +zram_compress_alg() +{ + echo "test that we can set compression algorithm" + + local i=$dev_start + local algs=$(cat /sys/block/zram${i}/comp_algorithm) + echo "supported algs: $algs" + + for alg in $zram_algs; do + local sys_path="/sys/block/zram${i}/comp_algorithm" + echo "$alg" > $sys_path || \ + echo "FAIL can't set '$alg' to $sys_path" + i=$(($i + 1)) + echo "$sys_path = '$alg'" + done + + echo "zram set compression algorithm: OK" +} + +zram_set_disksizes() +{ + echo "set disk size to zram device(s)" + local i=$dev_start + for ds in $zram_sizes; do + local sys_path="/sys/block/zram${i}/disksize" + echo "$ds" > $sys_path || \ + echo "FAIL can't set '$ds' to $sys_path" + + i=$(($i + 1)) + echo "$sys_path = '$ds'" + done + + echo "zram set disksizes: OK" +} + +zram_set_memlimit() +{ + echo "set memory limit to zram device(s)" + + local i=$dev_start + for ds in $zram_mem_limits; do + local sys_path="/sys/block/zram${i}/mem_limit" + echo "$ds" > $sys_path || \ + echo "FAIL can't set '$ds' to $sys_path" + + i=$(($i + 1)) + echo "$sys_path = '$ds'" + done + + echo "zram set memory limit: OK" +} + +zram_makeswap() +{ + echo "make swap with zram device(s)" + local i=$dev_start + for i in $(seq $dev_start $dev_end); do + mkswap /dev/zram$i > err.log 2>&1 + if [ $? -ne 0 ]; then + cat err.log + echo "FAIL mkswap /dev/zram$1 failed" + fi + + swapon /dev/zram$i > err.log 2>&1 + if [ $? -ne 0 ]; then + cat err.log + echo "FAIL swapon /dev/zram$1 failed" + fi + + echo "done with /dev/zram$i" + dev_makeswap=$i + done + + echo "zram making zram mkswap and swapon: OK" +} + +zram_swapoff() +{ + local i= + for i in $(seq $dev_start $dev_end); do + swapoff /dev/zram$i > err.log 2>&1 + if [ $? -ne 0 ]; then + cat err.log + echo "FAIL swapoff /dev/zram$i failed" + fi + done + dev_makeswap=-1 + + echo "zram swapoff: OK" +} + +zram_makefs() +{ + local i=$dev_start + for fs in $zram_filesystems; do + # if requested fs not supported default it to ext2 + which mkfs.$fs > /dev/null 2>&1 || fs=ext2 + + echo "make $fs filesystem on /dev/zram$i" + mkfs.$fs /dev/zram$i > err.log 2>&1 + if [ $? -ne 0 ]; then + cat err.log + echo "FAIL failed to make $fs on /dev/zram$i" + fi + i=$(($i + 1)) + echo "zram mkfs.$fs: OK" + done +} + +zram_mount() +{ + local i=0 + for i in $(seq $dev_start $dev_end); do + echo "mount /dev/zram$i" + mkdir zram$i + mount /dev/zram$i zram$i > /dev/null || \ + echo "FAIL mount /dev/zram$i failed" + dev_mounted=$i + done + + echo "zram mount of zram device(s): OK" +} |