10 echo $msg must be run as root >&2
14 SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
16 if [ ! -d "$SYSFS" ]; then
17 echo $msg sysfs is not mounted >&2
21 if ! ls $SYSFS/devices/system/memory/memory* > /dev/null 2>&1; then
22 echo $msg memory hotplug is not supported >&2
28 # list all hot-pluggable memory
34 for memory in $SYSFS/devices/system/memory/memory*; do
35 if grep -q 1 $memory/removable &&
36 grep -q $state $memory/state; then
37 echo ${memory##/*/memory}
42 hotplaggable_offline_memory()
44 hotpluggable_memory offline
47 hotpluggable_online_memory()
49 hotpluggable_memory online
54 grep -q online $SYSFS/devices/system/memory/memory$1/state
59 grep -q offline $SYSFS/devices/system/memory/memory$1/state
64 echo online > $SYSFS/devices/system/memory/memory$1/state
69 echo offline > $SYSFS/devices/system/memory/memory$1/state
72 online_memory_expect_success()
76 if ! online_memory $memory; then
77 echo $FUNCNAME $memory: unexpected fail >&2
78 elif ! memory_is_online $memory; then
79 echo $FUNCNAME $memory: unexpected offline >&2
83 online_memory_expect_fail()
87 if online_memory $memory 2> /dev/null; then
88 echo $FUNCNAME $memory: unexpected success >&2
89 elif ! memory_is_offline $memory; then
90 echo $FUNCNAME $memory: unexpected online >&2
94 offline_memory_expect_success()
98 if ! offline_memory $memory; then
99 echo $FUNCNAME $memory: unexpected fail >&2
100 elif ! memory_is_offline $memory; then
101 echo $FUNCNAME $memory: unexpected offline >&2
105 offline_memory_expect_fail()
109 if offline_memory $memory 2> /dev/null; then
110 echo $FUNCNAME $memory: unexpected success >&2
111 elif ! memory_is_online $memory; then
112 echo $FUNCNAME $memory: unexpected offline >&2
120 while getopts e:hp:r: opt; do
126 echo "Usage $0 [ -e errno ] [ -p notifier-priority ] [ -r percent-of-memory-to-offline ]"
138 if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
139 echo "error code must be -4095 <= errno < 0" >&2
145 echo "Test scope: $ratio% hotplug memory"
146 echo -e "\t online all hotplug memory in offline state"
147 echo -e "\t offline $ratio% hotplug memory in online state"
148 echo -e "\t online all hotplug memory in offline state"
151 # Online all hot-pluggable memory
153 for memory in `hotplaggable_offline_memory`; do
154 echo offline-online $memory
155 online_memory_expect_success $memory
159 # Offline $ratio percent of hot-pluggable memory
161 for memory in `hotpluggable_online_memory`; do
162 if [ $((RANDOM % 100)) -lt $ratio ]; then
163 echo online-offline $memory
164 offline_memory_expect_success $memory
169 # Online all hot-pluggable memory again
171 for memory in `hotplaggable_offline_memory`; do
172 echo offline-online $memory
173 online_memory_expect_success $memory
177 # Test with memory notifier error injection
180 DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
181 NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/memory
185 msg="skip extra tests:"
187 /sbin/modprobe -q -r memory-notifier-error-inject
188 /sbin/modprobe -q memory-notifier-error-inject priority=$priority
190 if [ ! -d "$DEBUGFS" ]; then
191 echo $msg debugfs is not mounted >&2
195 if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
196 echo $msg memory-notifier-error-inject module is not available >&2
204 # Offline $ratio percent of hot-pluggable memory
206 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
207 for memory in `hotpluggable_online_memory`; do
208 if [ $((RANDOM % 100)) -lt $ratio ]; then
209 offline_memory_expect_success $memory
214 # Test memory hot-add error handling (offline => online)
216 echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
217 for memory in `hotplaggable_offline_memory`; do
218 online_memory_expect_fail $memory
222 # Online all hot-pluggable memory
224 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_ONLINE/error
225 for memory in `hotplaggable_offline_memory`; do
226 online_memory_expect_success $memory
230 # Test memory hot-remove error handling (online => offline)
232 echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
233 for memory in `hotpluggable_online_memory`; do
234 offline_memory_expect_fail $memory
237 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/MEM_GOING_OFFLINE/error
238 /sbin/modprobe -q -r memory-notifier-error-inject