1 #!/bin/bash 1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 3
4 SYSFS= 4 SYSFS=
5 # Kselftest framework requirement - SKIP code <<
6 ksft_skip=4 <<
7 retval=0 <<
8 5
9 prerequisite() 6 prerequisite()
10 { 7 {
11 msg="skip all tests:" 8 msg="skip all tests:"
12 9
13 if [ $UID != 0 ]; then 10 if [ $UID != 0 ]; then
14 echo $msg must be run as root 11 echo $msg must be run as root >&2
15 exit $ksft_skip !! 12 exit 0
16 fi 13 fi
17 14
18 taskset -p 01 $$ 15 taskset -p 01 $$
19 16
20 SYSFS=`mount -t sysfs | head -1 | awk 17 SYSFS=`mount -t sysfs | head -1 | awk '{ print $3 }'`
21 18
22 if [ ! -d "$SYSFS" ]; then 19 if [ ! -d "$SYSFS" ]; then
23 echo $msg sysfs is not mounted 20 echo $msg sysfs is not mounted >&2
24 exit $ksft_skip !! 21 exit 0
25 fi 22 fi
26 23
27 if ! ls $SYSFS/devices/system/cpu/cpu* 24 if ! ls $SYSFS/devices/system/cpu/cpu* > /dev/null 2>&1; then
28 echo $msg cpu hotplug is not s 25 echo $msg cpu hotplug is not supported >&2
29 exit $ksft_skip !! 26 exit 0
30 fi 27 fi
31 28
32 echo "CPU online/offline summary:" 29 echo "CPU online/offline summary:"
33 online_cpus=`cat $SYSFS/devices/system 30 online_cpus=`cat $SYSFS/devices/system/cpu/online`
34 online_max=${online_cpus##*-} 31 online_max=${online_cpus##*-}
35 32
36 if [[ "$online_cpus" = "$online_max" ] 33 if [[ "$online_cpus" = "$online_max" ]]; then
37 echo "$msg: since there is onl 34 echo "$msg: since there is only one cpu: $online_cpus"
38 exit $ksft_skip !! 35 exit 0
39 fi 36 fi
40 37
41 present_cpus=`cat $SYSFS/devices/syste 38 present_cpus=`cat $SYSFS/devices/system/cpu/present`
42 present_max=${present_cpus##*-} 39 present_max=${present_cpus##*-}
43 echo "present_cpus = $present_cpus pre 40 echo "present_cpus = $present_cpus present_max = $present_max"
44 41
45 echo -e "\t Cpus in online state: $onl 42 echo -e "\t Cpus in online state: $online_cpus"
46 43
47 offline_cpus=`cat $SYSFS/devices/syste 44 offline_cpus=`cat $SYSFS/devices/system/cpu/offline`
48 if [[ "a$offline_cpus" = "a" ]]; then 45 if [[ "a$offline_cpus" = "a" ]]; then
49 offline_cpus=0 46 offline_cpus=0
50 else 47 else
51 offline_max=${offline_cpus##*- 48 offline_max=${offline_cpus##*-}
52 fi 49 fi
53 echo -e "\t Cpus in offline state: $of 50 echo -e "\t Cpus in offline state: $offline_cpus"
54 } 51 }
55 52
56 # 53 #
57 # list all hot-pluggable CPUs 54 # list all hot-pluggable CPUs
58 # 55 #
59 hotpluggable_cpus() 56 hotpluggable_cpus()
60 { 57 {
61 local state=${1:-.\*} 58 local state=${1:-.\*}
62 59
63 for cpu in $SYSFS/devices/system/cpu/c 60 for cpu in $SYSFS/devices/system/cpu/cpu*; do
64 if [ -f $cpu/online ] && grep 61 if [ -f $cpu/online ] && grep -q $state $cpu/online; then
65 echo ${cpu##/*/cpu} 62 echo ${cpu##/*/cpu}
66 fi 63 fi
67 done 64 done
68 } 65 }
69 66
70 hotplaggable_offline_cpus() 67 hotplaggable_offline_cpus()
71 { 68 {
72 hotpluggable_cpus 0 69 hotpluggable_cpus 0
73 } 70 }
74 71
75 hotpluggable_online_cpus() 72 hotpluggable_online_cpus()
76 { 73 {
77 hotpluggable_cpus 1 74 hotpluggable_cpus 1
78 } 75 }
79 76
80 cpu_is_online() 77 cpu_is_online()
81 { 78 {
82 grep -q 1 $SYSFS/devices/system/cpu/cp 79 grep -q 1 $SYSFS/devices/system/cpu/cpu$1/online
83 } 80 }
84 81
85 cpu_is_offline() 82 cpu_is_offline()
86 { 83 {
87 grep -q 0 $SYSFS/devices/system/cpu/cp 84 grep -q 0 $SYSFS/devices/system/cpu/cpu$1/online
88 } 85 }
89 86
90 online_cpu() 87 online_cpu()
91 { 88 {
92 echo 1 > $SYSFS/devices/system/cpu/cpu 89 echo 1 > $SYSFS/devices/system/cpu/cpu$1/online
93 } 90 }
94 91
95 offline_cpu() 92 offline_cpu()
96 { 93 {
97 echo 0 > $SYSFS/devices/system/cpu/cpu 94 echo 0 > $SYSFS/devices/system/cpu/cpu$1/online
98 } 95 }
99 96
100 online_cpu_expect_success() 97 online_cpu_expect_success()
101 { 98 {
102 local cpu=$1 99 local cpu=$1
103 100
104 if ! online_cpu $cpu; then 101 if ! online_cpu $cpu; then
105 echo $FUNCNAME $cpu: unexpecte 102 echo $FUNCNAME $cpu: unexpected fail >&2
106 retval=1 !! 103 exit 1
107 elif ! cpu_is_online $cpu; then 104 elif ! cpu_is_online $cpu; then
108 echo $FUNCNAME $cpu: unexpecte 105 echo $FUNCNAME $cpu: unexpected offline >&2
109 retval=1 !! 106 exit 1
110 fi 107 fi
111 } 108 }
112 109
113 online_cpu_expect_fail() 110 online_cpu_expect_fail()
114 { 111 {
115 local cpu=$1 112 local cpu=$1
116 113
117 if online_cpu $cpu 2> /dev/null; then 114 if online_cpu $cpu 2> /dev/null; then
118 echo $FUNCNAME $cpu: unexpecte 115 echo $FUNCNAME $cpu: unexpected success >&2
119 retval=1 !! 116 exit 1
120 elif ! cpu_is_offline $cpu; then 117 elif ! cpu_is_offline $cpu; then
121 echo $FUNCNAME $cpu: unexpecte 118 echo $FUNCNAME $cpu: unexpected online >&2
122 retval=1 !! 119 exit 1
123 fi 120 fi
124 } 121 }
125 122
126 offline_cpu_expect_success() 123 offline_cpu_expect_success()
127 { 124 {
128 local cpu=$1 125 local cpu=$1
129 126
130 if ! offline_cpu $cpu; then 127 if ! offline_cpu $cpu; then
131 echo $FUNCNAME $cpu: unexpecte 128 echo $FUNCNAME $cpu: unexpected fail >&2
132 retval=1 !! 129 exit 1
133 elif ! cpu_is_offline $cpu; then 130 elif ! cpu_is_offline $cpu; then
134 echo $FUNCNAME $cpu: unexpecte 131 echo $FUNCNAME $cpu: unexpected offline >&2
135 retval=1 !! 132 exit 1
136 fi 133 fi
137 } 134 }
138 135
139 offline_cpu_expect_fail() 136 offline_cpu_expect_fail()
140 { 137 {
141 local cpu=$1 138 local cpu=$1
142 139
143 if offline_cpu $cpu 2> /dev/null; then 140 if offline_cpu $cpu 2> /dev/null; then
144 echo $FUNCNAME $cpu: unexpecte 141 echo $FUNCNAME $cpu: unexpected success >&2
145 retval=1 !! 142 exit 1
146 elif ! cpu_is_online $cpu; then 143 elif ! cpu_is_online $cpu; then
147 echo $FUNCNAME $cpu: unexpecte 144 echo $FUNCNAME $cpu: unexpected offline >&2
148 retval=1 !! 145 exit 1
149 fi 146 fi
150 } 147 }
151 148
152 online_all_hot_pluggable_cpus() !! 149 error=-12
153 { <<
154 for cpu in `hotplaggable_offline_cpus` <<
155 online_cpu_expect_success $cpu <<
156 done <<
157 } <<
158 <<
159 offline_all_hot_pluggable_cpus() <<
160 { <<
161 local reserve_cpu=$online_max <<
162 for cpu in `hotpluggable_online_cpus`; <<
163 # Reserve one cpu oneline at l <<
164 if [ $cpu -eq $reserve_cpu ];t <<
165 continue <<
166 fi <<
167 offline_cpu_expect_success $cp <<
168 done <<
169 } <<
170 <<
171 allcpus=0 150 allcpus=0
>> 151 priority=0
172 online_cpus=0 152 online_cpus=0
173 online_max=0 153 online_max=0
174 offline_cpus=0 154 offline_cpus=0
175 offline_max=0 155 offline_max=0
176 present_cpus=0 156 present_cpus=0
177 present_max=0 157 present_max=0
178 158
179 while getopts ah opt; do !! 159 while getopts e:ahp: opt; do
180 case $opt in 160 case $opt in
>> 161 e)
>> 162 error=$OPTARG
>> 163 ;;
181 a) 164 a)
182 allcpus=1 165 allcpus=1
183 ;; 166 ;;
184 h) 167 h)
185 echo "Usage $0 [ -a ]" !! 168 echo "Usage $0 [ -a ] [ -e errno ] [ -p notifier-priority ]"
186 echo -e "\t default offline on 169 echo -e "\t default offline one cpu"
187 echo -e "\t run with -a option 170 echo -e "\t run with -a option to offline all cpus"
188 exit 171 exit
189 ;; 172 ;;
>> 173 p)
>> 174 priority=$OPTARG
>> 175 ;;
190 esac 176 esac
191 done 177 done
192 178
>> 179 if ! [ "$error" -ge -4095 -a "$error" -lt 0 ]; then
>> 180 echo "error code must be -4095 <= errno < 0" >&2
>> 181 exit 1
>> 182 fi
>> 183
193 prerequisite 184 prerequisite
194 185
195 # 186 #
196 # Safe test (default) - offline and online one 187 # Safe test (default) - offline and online one cpu
197 # 188 #
198 if [ $allcpus -eq 0 ]; then 189 if [ $allcpus -eq 0 ]; then
199 echo "Limited scope test: one hotplug 190 echo "Limited scope test: one hotplug cpu"
200 echo -e "\t (leaves cpu in the origina 191 echo -e "\t (leaves cpu in the original state):"
201 echo -e "\t online to offline to onlin 192 echo -e "\t online to offline to online: cpu $online_max"
202 offline_cpu_expect_success $online_max 193 offline_cpu_expect_success $online_max
203 online_cpu_expect_success $online_max 194 online_cpu_expect_success $online_max
204 195
205 if [[ $offline_cpus -gt 0 ]]; then 196 if [[ $offline_cpus -gt 0 ]]; then
206 echo -e "\t online to offline !! 197 echo -e "\t offline to online to offline: cpu $present_max"
207 online_cpu_expect_success $pre 198 online_cpu_expect_success $present_max
208 offline_cpu_expect_success $pr 199 offline_cpu_expect_success $present_max
209 online_cpu $present_max 200 online_cpu $present_max
210 fi 201 fi
211 exit $retval !! 202 exit 0
212 else 203 else
213 echo "Full scope test: all hotplug cpu 204 echo "Full scope test: all hotplug cpus"
214 echo -e "\t online all offline cpus" 205 echo -e "\t online all offline cpus"
215 echo -e "\t offline all online cpus" 206 echo -e "\t offline all online cpus"
216 echo -e "\t online all offline cpus" 207 echo -e "\t online all offline cpus"
217 fi 208 fi
218 209
219 online_all_hot_pluggable_cpus !! 210 #
>> 211 # Online all hot-pluggable CPUs
>> 212 #
>> 213 for cpu in `hotplaggable_offline_cpus`; do
>> 214 online_cpu_expect_success $cpu
>> 215 done
>> 216
>> 217 #
>> 218 # Offline all hot-pluggable CPUs
>> 219 #
>> 220 for cpu in `hotpluggable_online_cpus`; do
>> 221 offline_cpu_expect_success $cpu
>> 222 done
220 223
221 offline_all_hot_pluggable_cpus !! 224 #
>> 225 # Online all hot-pluggable CPUs again
>> 226 #
>> 227 for cpu in `hotplaggable_offline_cpus`; do
>> 228 online_cpu_expect_success $cpu
>> 229 done
>> 230
>> 231 #
>> 232 # Test with cpu notifier error injection
>> 233 #
222 234
223 online_all_hot_pluggable_cpus !! 235 DEBUGFS=`mount -t debugfs | head -1 | awk '{ print $3 }'`
>> 236 NOTIFIER_ERR_INJECT_DIR=$DEBUGFS/notifier-error-inject/cpu
>> 237
>> 238 prerequisite_extra()
>> 239 {
>> 240 msg="skip extra tests:"
>> 241
>> 242 /sbin/modprobe -q -r cpu-notifier-error-inject
>> 243 /sbin/modprobe -q cpu-notifier-error-inject priority=$priority
>> 244
>> 245 if [ ! -d "$DEBUGFS" ]; then
>> 246 echo $msg debugfs is not mounted >&2
>> 247 exit 0
>> 248 fi
>> 249
>> 250 if [ ! -d $NOTIFIER_ERR_INJECT_DIR ]; then
>> 251 echo $msg cpu-notifier-error-inject module is not available >&2
>> 252 exit 0
>> 253 fi
>> 254 }
>> 255
>> 256 prerequisite_extra
>> 257
>> 258 #
>> 259 # Offline all hot-pluggable CPUs
>> 260 #
>> 261 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
>> 262 for cpu in `hotpluggable_online_cpus`; do
>> 263 offline_cpu_expect_success $cpu
>> 264 done
>> 265
>> 266 #
>> 267 # Test CPU hot-add error handling (offline => online)
>> 268 #
>> 269 echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
>> 270 for cpu in `hotplaggable_offline_cpus`; do
>> 271 online_cpu_expect_fail $cpu
>> 272 done
>> 273
>> 274 #
>> 275 # Online all hot-pluggable CPUs
>> 276 #
>> 277 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_UP_PREPARE/error
>> 278 for cpu in `hotplaggable_offline_cpus`; do
>> 279 online_cpu_expect_success $cpu
>> 280 done
>> 281
>> 282 #
>> 283 # Test CPU hot-remove error handling (online => offline)
>> 284 #
>> 285 echo $error > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
>> 286 for cpu in `hotpluggable_online_cpus`; do
>> 287 offline_cpu_expect_fail $cpu
>> 288 done
224 289
225 exit $retval !! 290 echo 0 > $NOTIFIER_ERR_INJECT_DIR/actions/CPU_DOWN_PREPARE/error
>> 291 /sbin/modprobe -q -r cpu-notifier-error-inject
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