Lines Matching +full:- +full:cpu
2 # SPDX-License-Identifier: GPL-2.0
5 # Kselftest framework requirement - SKIP code is 4.
17 taskset -p 01 $$
19 SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
21 if [ ! -d "$SYSFS" ]; then
26 if ! ls $SYSFS/devices/system/cpu/cpu* > /dev/null 2>&1; then
27 echo $msg cpu hotplug is not supported >&2
31 echo "CPU online/offline summary:"
32 online_cpus=`cat $SYSFS/devices/system/cpu/online`
33 online_max=${online_cpus##*-}
36 echo "$msg: since there is only one cpu: $online_cpus"
40 echo -e "\t Cpus in online state: $online_cpus"
42 offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
46 offline_max=${offline_cpus##*-}
48 echo -e "\t Cpus in offline state: $offline_cpus"
52 # list all hot-pluggable CPUs
56 local state=${1:-.\*}
58 for cpu in $SYSFS/devices/system/cpu/cpu*; do
59 if [ -f $cpu/online ] && grep -q $state $cpu/online; then
60 echo ${cpu##/*/cpu}
77 grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
82 grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
87 echo 1 > $SYSFS/devices/system/cpu/cpu$1/online
92 echo 0 > $SYSFS/devices/system/cpu/cpu$1/online
97 local cpu=$1
99 if ! online_cpu $cpu; then
100 echo $FUNCNAME $cpu: unexpected fail >&2
102 elif ! cpu_is_online $cpu; then
103 echo $FUNCNAME $cpu: unexpected offline >&2
110 local cpu=$1
112 if online_cpu $cpu 2> /dev/null; then
113 echo $FUNCNAME $cpu: unexpected success >&2
115 elif ! cpu_is_offline $cpu; then
116 echo $FUNCNAME $cpu: unexpected online >&2
123 local cpu=$1
125 if ! offline_cpu $cpu; then
126 echo $FUNCNAME $cpu: unexpected fail >&2
128 elif ! cpu_is_offline $cpu; then
129 echo $FUNCNAME $cpu: unexpected offline >&2
136 local cpu=$1
138 if offline_cpu $cpu 2> /dev/null; then
139 echo $FUNCNAME $cpu: unexpected success >&2
141 elif ! cpu_is_online $cpu; then
142 echo $FUNCNAME $cpu: unexpected offline >&2
147 error=-12
164 echo "Usage $0 [ -a ] [ -e errno ] [ -p notifier-priority ]"
165 echo -e "\t default offline one cpu"
166 echo -e "\t run with -a option to offline all cpus"
175 if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
176 echo "error code must be -4095 <= errno < 0" >&2
183 # Safe test (default) - offline and online one cpu
185 if [ $allcpus -eq 0 ]; then
186 echo "Limited scope test: one hotplug cpu"
187 echo -e "\t (leaves cpu in the original state):"
188 echo -e "\t online to offline to online: cpu $online_max"
192 if [[ $offline_cpus -gt 0 ]]; then
193 echo -e "\t offline to online to offline: cpu $offline_max"
200 echo -e "\t online all offline cpus"
201 echo -e "\t offline all online cpus"
202 echo -e "\t online all offline cpus"
206 # Online all hot-pluggable CPUs
208 for cpu in `hotplaggable_offline_cpus`; do
209 online_cpu_expect_success $cpu
213 # Offline all hot-pluggable CPUs
215 for cpu in `hotpluggable_online_cpus`; do
216 offline_cpu_expect_success $cpu
220 # Online all hot-pluggable CPUs again
222 for cpu in `hotplaggable_offline_cpus`; do
223 online_cpu_expect_success $cpu
227 # Test with cpu notifier error injection
230 DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
231 NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/cpu
237 /sbin/modprobe -q -r cpu-notifier-error-inject
238 /sbin/modprobe -q cpu-notifier-error-inject priority=$priority
240 if [ ! -d "$DEBUGFS" ]; then
245 if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
246 echo $msg cpu-notifier-error-inject module is not available >&2
254 # Offline all hot-pluggable CPUs
257 for cpu in `hotpluggable_online_cpus`; do
258 offline_cpu_expect_success $cpu
262 # Test CPU hot-add error handling (offline => online)
265 for cpu in `hotplaggable_offline_cpus`; do
266 online_cpu_expect_fail $cpu
270 # Online all hot-pluggable CPUs
273 for cpu in `hotplaggable_offline_cpus`; do
274 online_cpu_expect_success $cpu
278 # Test CPU hot-remove error handling (online => offline)
281 for cpu in `hotpluggable_online_cpus`; do
282 offline_cpu_expect_fail $cpu
286 /sbin/modprobe -q -r cpu-notifier-error-inject