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#!/bin/sh
# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# Author: Alexey Kodanev <alexey.kodanev@oracle.com>
# Modified: Naresh Kamboju <naresh.kamboju@linaro.org>
MODULE=0
dev_makeswap=-1
dev_mounted=-1
trap INT
zram_cleanup()
{
echo "zram cleanup"
local i=
for i in $(seq 0 $dev_makeswap); do
swapoff /dev/zram$i
done
for i in $(seq 0 $dev_mounted); do
umount /dev/zram$i
done
for i in $(seq 0 $(($dev_num - 1))); do
echo 1 > /sys/block/zram${i}/reset
rm -rf zram$i
done
}
zram_unload()
{
if [ $MODULE -ne 0 ] ; then
echo "zram rmmod zram"
rmmod zram > /dev/null 2>&1
fi
}
zram_load()
{
# check zram module exists
MODULE_PATH=/lib/modules/`uname -r`/kernel/drivers/block/zram/zram.ko
if [ -f $MODULE_PATH ]; then
MODULE=1
echo "create '$dev_num' zram device(s)"
modprobe zram num_devices=$dev_num
if [ $? -ne 0 ]; then
echo "failed to insert zram module"
exit 1
fi
dev_num_created=$(ls /dev/zram* | wc -w)
if [ "$dev_num_created" -ne "$dev_num" ]; then
echo "unexpected num of devices: $dev_num_created"
ERR_CODE=-1
else
echo "zram load module successful"
fi
elif [ -b /dev/zram0 ]; then
echo "/dev/zram0 device file found: OK"
else
echo "ERROR: No zram.ko module or no /dev/zram0 device found"
echo "$TCID : CONFIG_ZRAM is not set"
exit 1
fi
}
zram_max_streams()
{
echo "set max_comp_streams to zram device(s)"
local i=0
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 = '$max_streams' ($i/$dev_num)"
done
echo "zram max streams: OK"
}
zram_compress_alg()
{
echo "test that we can set compression algorithm"
local algs=$(cat /sys/block/zram0/comp_algorithm)
echo "supported algs: $algs"
local i=0
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 = '$alg' ($i/$dev_num)"
done
echo "zram set compression algorithm: OK"
}
zram_set_disksizes()
{
echo "set disk size to zram device(s)"
local i=0
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 = '$ds' ($i/$dev_num)"
done
echo "zram set disksizes: OK"
}
zram_set_memlimit()
{
echo "set memory limit to zram device(s)"
local i=0
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 = '$ds' ($i/$dev_num)"
done
echo "zram set memory limit: OK"
}
zram_makeswap()
{
echo "make swap with zram device(s)"
local i=0
for i in $(seq 0 $(($dev_num - 1))); 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 0 $dev_makeswap); do
swapoff /dev/zram$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=0
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 0 $(($dev_num - 1))); 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"
}
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