10 echo $msg must be run as root >&2
16 SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
18 if [ ! -d "$SYSFS" ]; then
19 echo $msg sysfs is not mounted >&2
23 if ! ls $SYSFS/devices/system/cpu/cpu* > /dev/null 2>&1; then
24 echo $msg cpu hotplug is not supported >&2
28 echo "CPU online/offline summary:"
29 online_cpus=`cat $SYSFS/devices/system/cpu/online`
30 online_max=${online_cpus##*-}
31 echo -e "\t Cpus in online state: $online_cpus"
33 offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
34 if [[ "a$offline_cpus" = "a" ]]; then
37 offline_max=${offline_cpus##*-}
39 echo -e "\t Cpus in offline state: $offline_cpus"
43 # list all hot-pluggable CPUs
49 for cpu in $SYSFS/devices/system/cpu/cpu*; do
50 if [ -f $cpu/online ] && grep -q $state $cpu/online; then
56 hotplaggable_offline_cpus()
61 hotpluggable_online_cpus()
68 grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
73 grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
78 echo 1 > $SYSFS/devices/system/cpu/cpu$1/online
83 echo 0 > $SYSFS/devices/system/cpu/cpu$1/online
86 online_cpu_expect_success()
90 if ! online_cpu $cpu; then
91 echo $FUNCNAME $cpu: unexpected fail >&2
92 elif ! cpu_is_online $cpu; then
93 echo $FUNCNAME $cpu: unexpected offline >&2
97 online_cpu_expect_fail()
101 if online_cpu $cpu 2> /dev/null; then
102 echo $FUNCNAME $cpu: unexpected success >&2
103 elif ! cpu_is_offline $cpu; then
104 echo $FUNCNAME $cpu: unexpected online >&2
108 offline_cpu_expect_success()
112 if ! offline_cpu $cpu; then
113 echo $FUNCNAME $cpu: unexpected fail >&2
114 elif ! cpu_is_offline $cpu; then
115 echo $FUNCNAME $cpu: unexpected offline >&2
119 offline_cpu_expect_fail()
123 if offline_cpu $cpu 2> /dev/null; then
124 echo $FUNCNAME $cpu: unexpected success >&2
125 elif ! cpu_is_online $cpu; then
126 echo $FUNCNAME $cpu: unexpected offline >&2
138 while getopts e:ahp: opt; do
147 echo "Usage $0 [ -a ] [ -e errno ] [ -p notifier-priority ]"
148 echo -e "\t default offline one cpu"
149 echo -e "\t run with -a option to offline all cpus"
158 if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
159 echo "error code must be -4095 <= errno < 0" >&2
166 # Safe test (default) - offline and online one cpu
168 if [ $allcpus -eq 0 ]; then
169 echo "Limited scope test: one hotplug cpu"
170 echo -e "\t (leaves cpu in the original state):"
171 echo -e "\t online to offline to online: cpu $online_max"
172 offline_cpu_expect_success $online_max
173 online_cpu_expect_success $online_max
175 if [[ $offline_cpus -gt 0 ]]; then
176 echo -e "\t offline to online to offline: cpu $offline_max"
177 online_cpu_expect_success $offline_max
178 offline_cpu_expect_success $offline_max
182 echo "Full scope test: all hotplug cpus"
183 echo -e "\t online all offline cpus"
184 echo -e "\t offline all online cpus"
185 echo -e "\t online all offline cpus"
189 # Online all hot-pluggable CPUs
191 for cpu in `hotplaggable_offline_cpus`; do
192 online_cpu_expect_success $cpu
196 # Offline all hot-pluggable CPUs
198 for cpu in `hotpluggable_online_cpus`; do
199 offline_cpu_expect_success $cpu
203 # Online all hot-pluggable CPUs again
205 for cpu in `hotplaggable_offline_cpus`; do
206 online_cpu_expect_success $cpu
210 # Test with cpu notifier error injection
213 DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
214 NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/cpu
218 msg="skip extra tests:"
220 /sbin/modprobe -q -r cpu-notifier-error-inject
221 /sbin/modprobe -q cpu-notifier-error-inject priority=$priority
223 if [ ! -d "$DEBUGFS" ]; then
224 echo $msg debugfs is not mounted >&2
228 if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
229 echo $msg cpu-notifier-error-inject module is not available >&2
237 # Offline all hot-pluggable CPUs
239 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
240 for cpu in `hotpluggable_online_cpus`; do
241 offline_cpu_expect_success $cpu
245 # Test CPU hot-add error handling (offline => online)
247 echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
248 for cpu in `hotplaggable_offline_cpus`; do
249 online_cpu_expect_fail $cpu
253 # Online all hot-pluggable CPUs
255 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
256 for cpu in `hotplaggable_offline_cpus`; do
257 online_cpu_expect_success $cpu
261 # Test CPU hot-remove error handling (online => offline)
263 echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
264 for cpu in `hotpluggable_online_cpus`; do
265 offline_cpu_expect_fail $cpu
268 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
269 /sbin/modprobe -q -r cpu-notifier-error-inject