Lines Matching +full:1 +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 present_cpus=`cat $SYSFS/devices/system/cpu/present`
41 present_max=${present_cpus##*-}
44 echo -e "\t Cpus in online state: $online_cpus"
46 offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
50 offline_max=${offline_cpus##*-}
52 echo -e "\t Cpus in offline state: $offline_cpus"
56 # list all hot-pluggable CPUs
60 local state=${1:-.\*}
62 for cpu in $SYSFS/devices/system/cpu/cpu*; do
63 if [ -f $cpu/online ] && grep -q $state $cpu/online; then
64 echo ${cpu##/*/cpu}
76 hotpluggable_cpus 1
81 grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
86 grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
91 echo 1 > $SYSFS/devices/system/cpu/cpu$1/online
96 echo 0 > $SYSFS/devices/system/cpu/cpu$1/online
101 local cpu=$1
103 if ! online_cpu $cpu; then
104 echo $FUNCNAME $cpu: unexpected fail >&2
105 exit 1
106 elif ! cpu_is_online $cpu; then
107 echo $FUNCNAME $cpu: unexpected offline >&2
108 exit 1
114 local cpu=$1
116 if online_cpu $cpu 2> /dev/null; then
117 echo $FUNCNAME $cpu: unexpected success >&2
118 exit 1
119 elif ! cpu_is_offline $cpu; then
120 echo $FUNCNAME $cpu: unexpected online >&2
121 exit 1
127 local cpu=$1
129 if ! offline_cpu $cpu; then
130 echo $FUNCNAME $cpu: unexpected fail >&2
131 exit 1
132 elif ! cpu_is_offline $cpu; then
133 echo $FUNCNAME $cpu: unexpected offline >&2
134 exit 1
140 local cpu=$1
142 if offline_cpu $cpu 2> /dev/null; then
143 echo $FUNCNAME $cpu: unexpected success >&2
144 exit 1
145 elif ! cpu_is_online $cpu; then
146 echo $FUNCNAME $cpu: unexpected offline >&2
147 exit 1
151 error=-12
167 allcpus=1
170 echo "Usage $0 [ -a ] [ -e errno ] [ -p notifier-priority ]"
171 echo -e "\t default offline one cpu"
172 echo -e "\t run with -a option to offline all cpus"
181 if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
182 echo "error code must be -4095 <= errno < 0" >&2
183 exit 1
189 # Safe test (default) - offline and online one cpu
191 if [ $allcpus -eq 0 ]; then
192 echo "Limited scope test: one hotplug cpu"
193 echo -e "\t (leaves cpu in the original state):"
194 echo -e "\t online to offline to online: cpu $online_max"
198 if [[ $offline_cpus -gt 0 ]]; then
199 echo -e "\t offline to online to offline: cpu $present_max"
207 echo -e "\t online all offline cpus"
208 echo -e "\t offline all online cpus"
209 echo -e "\t online all offline cpus"
213 # Online all hot-pluggable CPUs
215 for cpu in `hotplaggable_offline_cpus`; do
216 online_cpu_expect_success $cpu
220 # Offline all hot-pluggable CPUs
222 for cpu in `hotpluggable_online_cpus`; do
223 offline_cpu_expect_success $cpu
227 # Online all hot-pluggable CPUs again
229 for cpu in `hotplaggable_offline_cpus`; do
230 online_cpu_expect_success $cpu
234 # Test with cpu notifier error injection
237 DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
238 NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/cpu
244 /sbin/modprobe -q -r cpu-notifier-error-inject
245 /sbin/modprobe -q cpu-notifier-error-inject priority=$priority
247 if [ ! -d "$DEBUGFS" ]; then
252 if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
253 echo $msg cpu-notifier-error-inject module is not available >&2
261 # Offline all hot-pluggable CPUs
264 for cpu in `hotpluggable_online_cpus`; do
265 offline_cpu_expect_success $cpu
269 # Test CPU hot-add error handling (offline => online)
272 for cpu in `hotplaggable_offline_cpus`; do
273 online_cpu_expect_fail $cpu
277 # Online all hot-pluggable CPUs
280 for cpu in `hotplaggable_offline_cpus`; do
281 online_cpu_expect_success $cpu
285 # Test CPU hot-remove error handling (online => offline)
288 for cpu in `hotpluggable_online_cpus`; do
289 offline_cpu_expect_fail $cpu
293 /sbin/modprobe -q -r cpu-notifier-error-inject