1#!/bin/sh 2# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved. 3# Copyright (c) 2019-2021 Petr Vorel <pvorel@suse.cz> 4# Author: Alexey Kodanev <alexey.kodanev@oracle.com> 5 6dev_makeswap=-1 7dev_mounted=-1 8dev_start=0 9dev_end=-1 10module_load=-1 11sys_control=-1 12 13TST_NEEDS_TMPDIR=1 14TST_NEEDS_ROOT=1 15TST_SETUP="zram_load" 16TST_CLEANUP="zram_cleanup" 17TST_NEEDS_DRIVERS="zram" 18. tst_test.sh 19 20zram_cleanup() 21{ 22 local i 23 24 for i in $(seq $dev_start $dev_makeswap); do 25 swapoff /dev/zram$i 26 done 27 28 for i in $(seq $dev_start $dev_mounted); do 29 umount /dev/zram$i 30 done 31 32 for i in $(seq $dev_start $dev_end); do 33 echo 1 > /sys/block/zram${i}/reset 34 done 35 36 if [ $sys_control -eq 1 ]; then 37 for i in $(seq $dev_start $dev_end); do 38 echo $i > /sys/class/zram-control/hot_remove 39 done 40 fi 41 42 if [ $module_load -eq 1 ]; then 43 rmmod zram > /dev/null 2>&1 44 fi 45} 46 47zram_load() 48{ 49 local tmp 50 51 if [ -z "$dev_num" ]; then 52 dev_num=0 53 for tmp in $zram_max_streams; do 54 dev_num=$((dev_num+1)) 55 done 56 fi 57 58 if [ $dev_num -le 0 ]; then 59 tst_brk TBROK "dev_num must be > 0" 60 fi 61 62 tst_set_timeout $((dev_num*450)) 63 64 tst_res TINFO "create '$dev_num' zram device(s)" 65 66 # zram module loaded, new kernel 67 if [ -d "/sys/class/zram-control" ]; then 68 tst_res TINFO "zram module already loaded, kernel supports zram-control interface" 69 dev_start=$(ls /dev/zram* | wc -w) 70 dev_end=$(($dev_start + $dev_num - 1)) 71 sys_control=1 72 73 for i in $(seq $dev_start $dev_end); do 74 cat /sys/class/zram-control/hot_add > /dev/null 75 done 76 77 tst_res TPASS "all zram devices (/dev/zram$dev_start~$dev_end) successfully created" 78 return 79 fi 80 81 # detect old kernel or built-in 82 modprobe zram num_devices=$dev_num 83 if [ ! -d "/sys/class/zram-control" ]; then 84 if grep -q '^zram' /proc/modules; then 85 rmmod zram > /dev/null 2>&1 || \ 86 tst_brk TCONF "zram module is being used on old kernel without zram-control interface" 87 else 88 tst_brk TCONF "test needs CONFIG_ZRAM=m on old kernel without zram-control interface" 89 fi 90 modprobe zram num_devices=$dev_num 91 fi 92 93 module_load=1 94 dev_end=$(($dev_num - 1)) 95 tst_res TPASS "all zram devices (/dev/zram0~$dev_end) successfully created" 96} 97 98zram_max_streams() 99{ 100 if tst_kvcmp -lt "3.15" -o -ge "4.7"; then 101 tst_res TCONF "The device attribute max_comp_streams was"\ 102 "introduced in kernel 3.15 and deprecated in 4.7" 103 return 104 fi 105 106 tst_res TINFO "set max_comp_streams to zram device(s)" 107 108 local i=$dev_start 109 110 for max_s in $zram_max_streams; do 111 local sys_path="/sys/block/zram${i}/max_comp_streams" 112 echo $max_s > $sys_path || \ 113 tst_brk TFAIL "failed to set '$max_s' to $sys_path" 114 local max_streams=$(cat $sys_path) 115 116 [ "$max_s" -ne "$max_streams" ] && \ 117 tst_brk TFAIL "can't set max_streams '$max_s', get $max_stream" 118 119 i=$(($i + 1)) 120 tst_res TINFO "$sys_path = '$max_streams'" 121 done 122 123 tst_res TPASS "test succeeded" 124} 125 126zram_compress_alg() 127{ 128 if tst_kvcmp -lt "3.15"; then 129 tst_res TCONF "device attribute comp_algorithm is"\ 130 "introduced since kernel v3.15, the running kernel"\ 131 "does not support it" 132 return 133 fi 134 135 local i=$dev_start 136 137 tst_res TINFO "test that we can set compression algorithm" 138 local algs="$(sed 's/[][]//g' /sys/block/zram${i}/comp_algorithm)" 139 tst_res TINFO "supported algs: $algs" 140 141 for i in $(seq $dev_start $dev_end); do 142 for alg in $algs; do 143 local sys_path="/sys/block/zram${i}/comp_algorithm" 144 echo "$alg" > $sys_path || \ 145 tst_brk TFAIL "can't set '$alg' to $sys_path" 146 tst_res TINFO "$sys_path = '$alg'" 147 done 148 done 149 150 tst_res TPASS "test succeeded" 151} 152 153zram_set_disksizes() 154{ 155 local i=$dev_start 156 local ds 157 158 tst_res TINFO "set disk size to zram device(s)" 159 for ds in $zram_sizes; do 160 local sys_path="/sys/block/zram${i}/disksize" 161 echo "$ds" > $sys_path || \ 162 tst_brk TFAIL "can't set '$ds' to $sys_path" 163 164 i=$(($i + 1)) 165 tst_res TINFO "$sys_path = '$ds'" 166 done 167 168 tst_res TPASS "test succeeded" 169} 170 171zram_set_memlimit() 172{ 173 if tst_kvcmp -lt "3.18"; then 174 tst_res TCONF "device attribute mem_limit is"\ 175 "introduced since kernel v3.18, the running kernel"\ 176 "does not support it" 177 return 178 fi 179 180 local i=$dev_start 181 local ds 182 183 tst_res TINFO "set memory limit to zram device(s)" 184 185 for ds in $zram_mem_limits; do 186 local sys_path="/sys/block/zram${i}/mem_limit" 187 echo "$ds" > $sys_path || \ 188 tst_brk TFAIL "can't set '$ds' to $sys_path" 189 190 i=$(($i + 1)) 191 tst_res TINFO "$sys_path = '$ds'" 192 done 193 194 tst_res TPASS "test succeeded" 195} 196