![Zhang Zhen](/assets/img/avatar_default.png)
Not all shells define a variable UID. This is a bash and zsh feature only. In other shells, the UID variable is not defined, so here test command expands to [ != 0 ] which is a syntax error. Without this patch: root@HGH1000007090:/opt/work/linux/tools/testing/selftests/zram# sh zram.sh zram.sh: 8: [: !=: unexpected operator zram.sh : No zram.ko module or /dev/zram0 device file not found zram.sh : CONFIG_ZRAM is not set With this patch: root@HGH1000007090:/opt/work/linux/tools/testing/selftests/zram# sh ./zram.sh zram.sh : No zram.ko module or /dev/zram0 device file not found zram.sh : CONFIG_ZRAM is not set Signed-off-by: Zhang Zhen <zhenzhang.zhang@huawei.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
234 lines
4.8 KiB
Bash
Executable file
234 lines
4.8 KiB
Bash
Executable file
#!/bin/sh
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# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# Author: Alexey Kodanev <alexey.kodanev@oracle.com>
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# Modified: Naresh Kamboju <naresh.kamboju@linaro.org>
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MODULE=0
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dev_makeswap=-1
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dev_mounted=-1
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trap INT
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check_prereqs()
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{
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local msg="skip all tests:"
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local uid=$(id -u)
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if [ $uid -ne 0 ]; then
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echo $msg must be run as root >&2
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exit 0
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fi
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}
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zram_cleanup()
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{
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echo "zram cleanup"
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local i=
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for i in $(seq 0 $dev_makeswap); do
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swapoff /dev/zram$i
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done
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for i in $(seq 0 $dev_mounted); do
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umount /dev/zram$i
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done
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for i in $(seq 0 $(($dev_num - 1))); do
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echo 1 > /sys/block/zram${i}/reset
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rm -rf zram$i
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done
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}
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zram_unload()
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{
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if [ $MODULE -ne 0 ] ; then
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echo "zram rmmod zram"
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rmmod zram > /dev/null 2>&1
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fi
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}
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zram_load()
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{
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# check zram module exists
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MODULE_PATH=/lib/modules/`uname -r`/kernel/drivers/block/zram/zram.ko
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if [ -f $MODULE_PATH ]; then
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MODULE=1
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echo "create '$dev_num' zram device(s)"
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modprobe zram num_devices=$dev_num
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if [ $? -ne 0 ]; then
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echo "failed to insert zram module"
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exit 1
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fi
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dev_num_created=$(ls /dev/zram* | wc -w)
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if [ "$dev_num_created" -ne "$dev_num" ]; then
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echo "unexpected num of devices: $dev_num_created"
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ERR_CODE=-1
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else
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echo "zram load module successful"
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fi
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elif [ -b /dev/zram0 ]; then
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echo "/dev/zram0 device file found: OK"
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else
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echo "ERROR: No zram.ko module or no /dev/zram0 device found"
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echo "$TCID : CONFIG_ZRAM is not set"
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exit 1
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fi
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}
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zram_max_streams()
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{
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echo "set max_comp_streams to zram device(s)"
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local i=0
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for max_s in $zram_max_streams; do
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local sys_path="/sys/block/zram${i}/max_comp_streams"
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echo $max_s > $sys_path || \
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echo "FAIL failed to set '$max_s' to $sys_path"
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sleep 1
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local max_streams=$(cat $sys_path)
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[ "$max_s" -ne "$max_streams" ] && \
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echo "FAIL can't set max_streams '$max_s', get $max_stream"
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i=$(($i + 1))
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echo "$sys_path = '$max_streams' ($i/$dev_num)"
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done
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echo "zram max streams: OK"
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}
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zram_compress_alg()
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{
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echo "test that we can set compression algorithm"
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local algs=$(cat /sys/block/zram0/comp_algorithm)
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echo "supported algs: $algs"
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local i=0
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for alg in $zram_algs; do
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local sys_path="/sys/block/zram${i}/comp_algorithm"
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echo "$alg" > $sys_path || \
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echo "FAIL can't set '$alg' to $sys_path"
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i=$(($i + 1))
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echo "$sys_path = '$alg' ($i/$dev_num)"
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done
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echo "zram set compression algorithm: OK"
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}
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zram_set_disksizes()
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{
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echo "set disk size to zram device(s)"
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local i=0
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for ds in $zram_sizes; do
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local sys_path="/sys/block/zram${i}/disksize"
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echo "$ds" > $sys_path || \
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echo "FAIL can't set '$ds' to $sys_path"
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i=$(($i + 1))
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echo "$sys_path = '$ds' ($i/$dev_num)"
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done
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echo "zram set disksizes: OK"
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}
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zram_set_memlimit()
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{
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echo "set memory limit to zram device(s)"
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local i=0
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for ds in $zram_mem_limits; do
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local sys_path="/sys/block/zram${i}/mem_limit"
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echo "$ds" > $sys_path || \
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echo "FAIL can't set '$ds' to $sys_path"
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i=$(($i + 1))
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echo "$sys_path = '$ds' ($i/$dev_num)"
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done
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echo "zram set memory limit: OK"
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}
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zram_makeswap()
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{
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echo "make swap with zram device(s)"
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local i=0
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for i in $(seq 0 $(($dev_num - 1))); do
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mkswap /dev/zram$i > err.log 2>&1
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if [ $? -ne 0 ]; then
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cat err.log
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echo "FAIL mkswap /dev/zram$1 failed"
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fi
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swapon /dev/zram$i > err.log 2>&1
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if [ $? -ne 0 ]; then
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cat err.log
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echo "FAIL swapon /dev/zram$1 failed"
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fi
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echo "done with /dev/zram$i"
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dev_makeswap=$i
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done
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echo "zram making zram mkswap and swapon: OK"
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}
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zram_swapoff()
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{
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local i=
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for i in $(seq 0 $dev_makeswap); do
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swapoff /dev/zram$i > err.log 2>&1
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if [ $? -ne 0 ]; then
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cat err.log
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echo "FAIL swapoff /dev/zram$i failed"
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fi
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done
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dev_makeswap=-1
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echo "zram swapoff: OK"
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}
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zram_makefs()
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{
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local i=0
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for fs in $zram_filesystems; do
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# if requested fs not supported default it to ext2
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which mkfs.$fs > /dev/null 2>&1 || fs=ext2
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echo "make $fs filesystem on /dev/zram$i"
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mkfs.$fs /dev/zram$i > err.log 2>&1
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if [ $? -ne 0 ]; then
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cat err.log
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echo "FAIL failed to make $fs on /dev/zram$i"
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fi
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i=$(($i + 1))
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echo "zram mkfs.$fs: OK"
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done
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}
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zram_mount()
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{
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local i=0
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for i in $(seq 0 $(($dev_num - 1))); do
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echo "mount /dev/zram$i"
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mkdir zram$i
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mount /dev/zram$i zram$i > /dev/null || \
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echo "FAIL mount /dev/zram$i failed"
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dev_mounted=$i
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done
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echo "zram mount of zram device(s): OK"
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}
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