1#!/bin/sh 2# Copyright (c) 2015 Oracle and/or its affiliates. All Rights Reserved. 3# Copyright (c) 2019-2022 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="${TST_SETUP:-zram_load}" 16TST_CLEANUP="${TST_CLEANUP:-zram_cleanup}" 17TST_NEEDS_DRIVERS="zram" 18 19zram_cleanup() 20{ 21 local i 22 23 for i in $(seq $dev_start $dev_makeswap); do 24 swapoff /dev/zram$i 25 done 26 27 for i in $(seq $dev_start $dev_mounted); do 28 umount /dev/zram$i 29 done 30 31 for i in $(seq $dev_start $dev_end); do 32 echo 1 > /sys/block/zram${i}/reset 33 done 34 35 if [ $sys_control -eq 1 ]; then 36 for i in $(seq $dev_start $dev_end); do 37 echo $i > /sys/class/zram-control/hot_remove 38 done 39 fi 40 41 if [ $module_load -eq 1 ]; then 42 rmmod zram > /dev/null 2>&1 43 fi 44} 45 46zram_load() 47{ 48 local tmp 49 50 if [ -z "$dev_num" ]; then 51 dev_num=0 52 for tmp in $zram_max_streams; do 53 dev_num=$((dev_num+1)) 54 done 55 fi 56 57 if [ $dev_num -le 0 ]; then 58 tst_brk TBROK "dev_num must be > 0" 59 fi 60 61 tst_set_timeout $((dev_num*450)) 62 63 tst_res TINFO "create '$dev_num' zram device(s)" 64 65 # zram module loaded, new kernel 66 if [ -d "/sys/class/zram-control" ]; then 67 tst_res TINFO "zram module already loaded, kernel supports zram-control interface" 68 dev_start=$(ls /dev/zram* | wc -w) 69 dev_end=$(($dev_start + $dev_num - 1)) 70 sys_control=1 71 72 for i in $(seq $dev_start $dev_end); do 73 cat /sys/class/zram-control/hot_add > /dev/null 74 done 75 76 tst_res TPASS "all zram devices (/dev/zram$dev_start~$dev_end) successfully created" 77 return 78 fi 79 80 # detect old kernel or built-in 81 modprobe zram num_devices=$dev_num 82 if [ ! -d "/sys/class/zram-control" ]; then 83 if grep -q '^zram' /proc/modules; then 84 rmmod zram > /dev/null 2>&1 || \ 85 tst_brk TCONF "zram module is being used on old kernel without zram-control interface" 86 else 87 tst_brk TCONF "test needs CONFIG_ZRAM=m on old kernel without zram-control interface" 88 fi 89 modprobe zram num_devices=$dev_num 90 fi 91 92 module_load=1 93 dev_end=$(($dev_num - 1)) 94 tst_res TPASS "all zram devices (/dev/zram0~$dev_end) successfully created" 95} 96 97zram_max_streams() 98{ 99 if tst_kvcmp -lt "3.15" -o -ge "4.7"; then 100 tst_res TCONF "The device attribute max_comp_streams was"\ 101 "introduced in kernel 3.15 and deprecated in 4.7" 102 return 103 fi 104 105 tst_res TINFO "set max_comp_streams to zram device(s)" 106 107 local i=$dev_start 108 109 for max_s in $zram_max_streams; do 110 local sys_path="/sys/block/zram${i}/max_comp_streams" 111 echo $max_s > $sys_path || \ 112 tst_brk TFAIL "failed to set '$max_s' to $sys_path" 113 local max_streams=$(cat $sys_path) 114 115 [ "$max_s" -ne "$max_streams" ] && \ 116 tst_brk TFAIL "can't set max_streams '$max_s', get $max_stream" 117 118 i=$(($i + 1)) 119 tst_res TINFO "$sys_path = '$max_streams'" 120 done 121 122 tst_res TPASS "test succeeded" 123} 124 125zram_compress_alg() 126{ 127 if tst_kvcmp -lt "3.15"; then 128 tst_res TCONF "device attribute comp_algorithm is"\ 129 "introduced since kernel v3.15, the running kernel"\ 130 "does not support it" 131 return 132 fi 133 134 local i=$dev_start 135 136 tst_res TINFO "test that we can set compression algorithm" 137 local algs="$(sed 's/[][]//g' /sys/block/zram${i}/comp_algorithm)" 138 tst_res TINFO "supported algs: $algs" 139 140 for i in $(seq $dev_start $dev_end); do 141 for alg in $algs; do 142 local sys_path="/sys/block/zram${i}/comp_algorithm" 143 echo "$alg" > $sys_path || \ 144 tst_brk TFAIL "can't set '$alg' to $sys_path" 145 tst_res TINFO "$sys_path = '$alg'" 146 done 147 done 148 149 tst_res TPASS "test succeeded" 150} 151 152zram_set_disksizes() 153{ 154 local i=$dev_start 155 local ds 156 157 tst_res TINFO "set disk size to zram device(s)" 158 for ds in $zram_sizes; do 159 local sys_path="/sys/block/zram${i}/disksize" 160 echo "$ds" > $sys_path || \ 161 tst_brk TFAIL "can't set '$ds' to $sys_path" 162 163 i=$(($i + 1)) 164 tst_res TINFO "$sys_path = '$ds'" 165 done 166 167 tst_res TPASS "test succeeded" 168} 169 170zram_set_memlimit() 171{ 172 if tst_kvcmp -lt "3.18"; then 173 tst_res TCONF "device attribute mem_limit is"\ 174 "introduced since kernel v3.18, the running kernel"\ 175 "does not support it" 176 return 177 fi 178 179 local i=$dev_start 180 local ds 181 182 tst_res TINFO "set memory limit to zram device(s)" 183 184 for ds in $zram_mem_limits; do 185 local sys_path="/sys/block/zram${i}/mem_limit" 186 echo "$ds" > $sys_path || \ 187 tst_brk TFAIL "can't set '$ds' to $sys_path" 188 189 i=$(($i + 1)) 190 tst_res TINFO "$sys_path = '$ds'" 191 done 192 193 tst_res TPASS "test succeeded" 194} 195 196. tst_test.sh 197