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/cpu/cpu* > /dev/null 2>&1; then
22 echo $msg cpu hotplug is not supported >&2
28 # list all hot-pluggable CPUs
34 for cpu in $SYSFS/devices/system/cpu/cpu*; do
35 if [ -f $cpu/online ] && grep -q $state $cpu/online; then
41 hotplaggable_offline_cpus()
46 hotpluggable_online_cpus()
53 grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
58 grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
63 echo 1 > $SYSFS/devices/system/cpu/cpu$1/online
68 echo 0 > $SYSFS/devices/system/cpu/cpu$1/online
71 online_cpu_expect_success()
75 if ! online_cpu $cpu; then
76 echo $FUNCNAME $cpu: unexpected fail >&2
77 elif ! cpu_is_online $cpu; then
78 echo $FUNCNAME $cpu: unexpected offline >&2
82 online_cpu_expect_fail()
86 if online_cpu $cpu 2> /dev/null; then
87 echo $FUNCNAME $cpu: unexpected success >&2
88 elif ! cpu_is_offline $cpu; then
89 echo $FUNCNAME $cpu: unexpected online >&2
93 offline_cpu_expect_success()
97 if ! offline_cpu $cpu; then
98 echo $FUNCNAME $cpu: unexpected fail >&2
99 elif ! cpu_is_offline $cpu; then
100 echo $FUNCNAME $cpu: unexpected offline >&2
104 offline_cpu_expect_fail()
108 if offline_cpu $cpu 2> /dev/null; then
109 echo $FUNCNAME $cpu: unexpected success >&2
110 elif ! cpu_is_online $cpu; then
111 echo $FUNCNAME $cpu: unexpected offline >&2
118 while getopts e:hp: opt; do
124 echo "Usage $0 [ -e errno ] [ -p notifier-priority ]"
133 if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
134 echo "error code must be -4095 <= errno < 0" >&2
141 # Online all hot-pluggable CPUs
143 for cpu in `hotplaggable_offline_cpus`; do
144 online_cpu_expect_success $cpu
148 # Offline all hot-pluggable CPUs
150 for cpu in `hotpluggable_online_cpus`; do
151 offline_cpu_expect_success $cpu
155 # Online all hot-pluggable CPUs again
157 for cpu in `hotplaggable_offline_cpus`; do
158 online_cpu_expect_success $cpu
162 # Test with cpu notifier error injection
165 DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
166 NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/cpu
170 msg="skip extra tests:"
172 /sbin/modprobe -q -r cpu-notifier-error-inject
173 /sbin/modprobe -q cpu-notifier-error-inject priority=$priority
175 if [ ! -d "$DEBUGFS" ]; then
176 echo $msg debugfs is not mounted >&2
180 if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
181 echo $msg cpu-notifier-error-inject module is not available >&2
189 # Offline all hot-pluggable CPUs
191 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
192 for cpu in `hotpluggable_online_cpus`; do
193 offline_cpu_expect_success $cpu
197 # Test CPU hot-add error handling (offline => online)
199 echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
200 for cpu in `hotplaggable_offline_cpus`; do
201 online_cpu_expect_fail $cpu
205 # Online all hot-pluggable CPUs
207 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
208 for cpu in `hotplaggable_offline_cpus`; do
209 online_cpu_expect_success $cpu
213 # Test CPU hot-remove error handling (online => offline)
215 echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
216 for cpu in `hotpluggable_online_cpus`; do
217 offline_cpu_expect_fail $cpu
220 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
221 /sbin/modprobe -q -r cpu-notifier-error-inject