summaryrefslogtreecommitdiffstats
path: root/kernel/tools/testing/selftests/zram/zram_lib.sh
blob: f6a9c73e7a442e7988b0820ebc809a342981df91 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
#!/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

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 0
	fi
}

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"
}