selftests/memory-hotplug/mem-on-off-test.sh

25 	if ! ls $SYSFS/devices/system/memory/memory* > /dev/null 2>&1; then
26 		echo $msg memory hotplug is not supported >&2
30 	if ! grep -q 1 $SYSFS/devices/system/memory/memory*/removable; then
31 		echo $msg no hot-pluggable memory >&2
37 # list all hot-pluggable memory
43 	for memory in $SYSFS/devices/system/memory/memory*; do
44 		if grep -q 1 $memory/removable &&
45 		   grep -q $state $memory/state; then
46 			echo ${memory##/*/memory}
63 	grep -q online $SYSFS/devices/system/memory/memory$1/state
68 	grep -q offline $SYSFS/devices/system/memory/memory$1/state
73 	echo online > $SYSFS/devices/system/memory/memory$1/state
78 	echo offline > $SYSFS/devices/system/memory/memory$1/state
83 	local memory=$1
85 	if ! online_memory $memory; then
86 		echo $FUNCNAME $memory: unexpected fail >&2
88 	elif ! memory_is_online $memory; then
89 		echo $FUNCNAME $memory: unexpected offline >&2
97 	local memory=$1
99 	if online_memory $memory 2> /dev/null; then
100 		echo $FUNCNAME $memory: unexpected success >&2
102 	elif ! memory_is_offline $memory; then
103 		echo $FUNCNAME $memory: unexpected online >&2
111 	local memory=$1
113 	if ! offline_memory $memory; then
114 		echo $FUNCNAME $memory: unexpected fail >&2
116 	elif ! memory_is_offline $memory; then
117 		echo $FUNCNAME $memory: unexpected offline >&2
125 	local memory=$1
127 	if offline_memory $memory 2> /dev/null; then
128 		echo $FUNCNAME $memory: unexpected success >&2
130 	elif ! memory_is_online $memory; then
131 		echo $FUNCNAME $memory: unexpected offline >&2
139 	for memory in `hotpluggable_offline_memory`; do
140 		if ! online_memory_expect_success $memory; then
158 		echo "Usage $0 [ -e errno ] [ -p notifier-priority ] [ -r percent-of-memory-to-offline ]"
181 echo "Test scope: $ratio% hotplug memory"
184 # Online all hot-pluggable memory
187 echo -e "\t online all hot-pluggable memory in offline state:"
189 	for memory in `hotpluggable_offline_memory`; do
190 		echo "offline->online memory$memory"
191 		if ! online_memory_expect_success $memory; then
196 	echo -e "\t\t SKIPPED - no hot-pluggable memory in offline state"
200 # Offline $ratio percent of hot-pluggable memory
204 echo -e "\t offline $ratio% hot-pluggable memory in online state"
205 echo -e "\t trying to offline $target out of $hotpluggable_num memory block(s):"
206 for memory in `hotpluggable_online_memory`; do
208 		echo "online->offline memory$memory"
209 		if offline_memory_expect_success $memory &>/dev/null; then
219 	echo -e "\t\t FAILED - unable to offline some memory blocks, device busy?"
223 # Online all hot-pluggable memory again
226 echo -e "\t online all hot-pluggable memory in offline state:"
228 	for memory in `hotpluggable_offline_memory`; do
229 		echo "offline->online memory$memory"
230 		if ! online_memory_expect_success $memory; then
235 	echo -e "\t\t SKIPPED - no hot-pluggable memory in offline state"
239 # Test with memory notifier error injection
243 NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/memory
249 	/sbin/modprobe -q -r memory-notifier-error-inject
250 	/sbin/modprobe -q memory-notifier-error-inject priority=$priority
258 		echo $msg memory-notifier-error-inject module is not available >&2
263 echo -e "\t Test with memory notifier error injection"
267 # Offline $ratio percent of hot-pluggable memory
270 for memory in `hotpluggable_online_memory`; do
272 		offline_memory_expect_success $memory &>/dev/null
277 # Test memory hot-add error handling (offline => online)
280 for memory in `hotpluggable_offline_memory`; do
281 	if ! online_memory_expect_fail $memory; then
287 # Online all hot-pluggable memory
293 # Test memory hot-remove error handling (online => offline)
296 for memory in `hotpluggable_online_memory`; do
298 		if ! offline_memory_expect_fail $memory; then
305 /sbin/modprobe -q -r memory-notifier-error-inject
308 # Restore memory before exit