tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3#
4# Test for cpuset v2 partition root state (PRS)
5#
6# The sched verbose flag can be optionally set so that the console log
7# can be examined for the correct setting of scheduling domain.
8#
9
10skip_test() {
11 echo "$1"
12 echo "Test SKIPPED"
13 exit 4 # ksft_skip
14}
15
16[[ $(id -u) -eq 0 ]] || skip_test "Test must be run as root!"
17
18
19# Get wait_inotify location
20WAIT_INOTIFY=$(cd $(dirname $0); pwd)/wait_inotify
21
22# Find cgroup v2 mount point
23CGROUP2=$(mount -t cgroup2 | head -1 | awk -e '{print $3}')
24[[ -n "$CGROUP2" ]] || skip_test "Cgroup v2 mount point not found!"
25SUBPARTS_CPUS=$CGROUP2/.__DEBUG__.cpuset.cpus.subpartitions
26CPULIST=$(cat $CGROUP2/cpuset.cpus.effective)
27
28NR_CPUS=$(lscpu | grep "^CPU(s):" | sed -e "s/.*:[[:space:]]*//")
29[[ $NR_CPUS -lt 8 ]] && skip_test "Test needs at least 8 cpus available!"
30
31# Check to see if /dev/console exists and is writable
32if [[ -c /dev/console && -w /dev/console ]]
33then
34 CONSOLE=/dev/console
35else
36 CONSOLE=/dev/null
37fi
38
39# Set verbose flag and delay factor
40PROG=$1
41VERBOSE=0
42DELAY_FACTOR=1
43SCHED_DEBUG=
44while [[ "$1" = -* ]]
45do
46 case "$1" in
47 -v) ((VERBOSE++))
48 # Enable sched/verbose can slow thing down
49 [[ $DELAY_FACTOR -eq 1 ]] &&
50 DELAY_FACTOR=2
51 ;;
52 -d) DELAY_FACTOR=$2
53 shift
54 ;;
55 *) echo "Usage: $PROG [-v] [-d <delay-factor>"
56 exit
57 ;;
58 esac
59 shift
60done
61
62# Set sched verbose flag if available when "-v" option is specified
63if [[ $VERBOSE -gt 0 && -d /sys/kernel/debug/sched ]]
64then
65 # Used to restore the original setting during cleanup
66 SCHED_DEBUG=$(cat /sys/kernel/debug/sched/verbose)
67 echo Y > /sys/kernel/debug/sched/verbose
68fi
69
70cd $CGROUP2
71echo +cpuset > cgroup.subtree_control
72
73#
74# If cpuset has been set up and used in child cgroups, we may not be able to
75# create partition under root cgroup because of the CPU exclusivity rule.
76# So we are going to skip the test if this is the case.
77#
78[[ -d test ]] || mkdir test
79echo 0-6 > test/cpuset.cpus
80echo root > test/cpuset.cpus.partition
81cat test/cpuset.cpus.partition | grep -q invalid
82RESULT=$?
83echo member > test/cpuset.cpus.partition
84echo "" > test/cpuset.cpus
85[[ $RESULT -eq 0 ]] && skip_test "Child cgroups are using cpuset!"
86
87#
88# If isolated CPUs have been reserved at boot time (as shown in
89# cpuset.cpus.isolated), these isolated CPUs should be outside of CPUs 0-8
90# that will be used by this script for testing purpose. If not, some of
91# the tests may fail incorrectly. Wait a bit and retry again just in case
92# these isolated CPUs are leftover from previous run and have just been
93# cleaned up earlier in this script.
94#
95# These pre-isolated CPUs should stay in an isolated state throughout the
96# testing process for now.
97#
98BOOT_ISOLCPUS=$(cat $CGROUP2/cpuset.cpus.isolated)
99[[ -n "$BOOT_ISOLCPUS" ]] && {
100 sleep 0.5
101 BOOT_ISOLCPUS=$(cat $CGROUP2/cpuset.cpus.isolated)
102}
103if [[ -n "$BOOT_ISOLCPUS" ]]
104then
105 [[ $(echo $BOOT_ISOLCPUS | sed -e "s/[,-].*//") -le 8 ]] &&
106 skip_test "Pre-isolated CPUs ($BOOT_ISOLCPUS) overlap CPUs to be tested"
107 echo "Pre-isolated CPUs: $BOOT_ISOLCPUS"
108fi
109
110cleanup()
111{
112 online_cpus
113 cd $CGROUP2
114 rmdir A1/A2/A3 A1/A2 A1 B1 test/A1 test/B1 test > /dev/null 2>&1
115 rmdir rtest/p1/c11 rtest/p1/c12 rtest/p2/c21 \
116 rtest/p2/c22 rtest/p1 rtest/p2 rtest > /dev/null 2>&1
117 [[ -n "$SCHED_DEBUG" ]] &&
118 echo "$SCHED_DEBUG" > /sys/kernel/debug/sched/verbose
119}
120
121# Pause in ms
122pause()
123{
124 DELAY=$1
125 LOOP=0
126 while [[ $LOOP -lt $DELAY_FACTOR ]]
127 do
128 sleep $DELAY
129 ((LOOP++))
130 done
131 return 0
132}
133
134console_msg()
135{
136 MSG=$1
137 echo "$MSG"
138 echo "" > $CONSOLE
139 echo "$MSG" > $CONSOLE
140 pause 0.01
141}
142
143test_partition()
144{
145 EXPECTED_VAL=$1
146 echo $EXPECTED_VAL > cpuset.cpus.partition
147 [[ $? -eq 0 ]] || exit 1
148 ACTUAL_VAL=$(cat cpuset.cpus.partition)
149 [[ $ACTUAL_VAL != $EXPECTED_VAL ]] && {
150 echo "cpuset.cpus.partition: expect $EXPECTED_VAL, found $ACTUAL_VAL"
151 echo "Test FAILED"
152 exit 1
153 }
154}
155
156test_effective_cpus()
157{
158 EXPECTED_VAL=$1
159 ACTUAL_VAL=$(cat cpuset.cpus.effective)
160 [[ "$ACTUAL_VAL" != "$EXPECTED_VAL" ]] && {
161 echo "cpuset.cpus.effective: expect '$EXPECTED_VAL', found '$ACTUAL_VAL'"
162 echo "Test FAILED"
163 exit 1
164 }
165}
166
167# Adding current process to cgroup.procs as a test
168test_add_proc()
169{
170 OUTSTR="$1"
171 ERRMSG=$((echo $$ > cgroup.procs) |& cat)
172 echo $ERRMSG | grep -q "$OUTSTR"
173 [[ $? -ne 0 ]] && {
174 echo "cgroup.procs: expect '$OUTSTR', got '$ERRMSG'"
175 echo "Test FAILED"
176 exit 1
177 }
178 echo $$ > $CGROUP2/cgroup.procs # Move out the task
179}
180
181#
182# Cpuset controller state transition test matrix.
183#
184# Cgroup test hierarchy
185#
186# root
187# |
188# +------+------+
189# | |
190# A1 B1
191# |
192# A2
193# |
194# A3
195#
196# P<v> = set cpus.partition (0:member, 1:root, 2:isolated)
197# C<l> = add cpu-list to cpuset.cpus
198# X<l> = add cpu-list to cpuset.cpus.exclusive
199# S<p> = use prefix in subtree_control
200# T = put a task into cgroup
201# CX<l> = add cpu-list to both cpuset.cpus and cpuset.cpus.exclusive
202# O<c>=<v> = Write <v> to CPU online file of <c>
203#
204# ECPUs - effective CPUs of cpusets
205# Pstate - partition root state
206# ISOLCPUS - isolated CPUs (<icpus>[,<icpus2>])
207#
208# Note that if there are 2 fields in ISOLCPUS, the first one is for
209# sched-debug matching which includes offline CPUs and single-CPU partitions
210# while the second one is for matching cpuset.cpus.isolated.
211#
212SETUP_A123_PARTITIONS="C1-3:P1:S+ C2-3:P1:S+ C3:P1"
213TEST_MATRIX=(
214 # old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate ISOLCPUS
215 # ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------ --------
216 " C0-1 . . C2-3 S+ C4-5 . . 0 A2:0-1"
217 " C0-1 . . C2-3 P1 . . . 0 "
218 " C0-1 . . C2-3 P1:S+ C0-1:P1 . . 0 "
219 " C0-1 . . C2-3 P1:S+ C1:P1 . . 0 "
220 " C0-1:S+ . . C2-3 . . . P1 0 "
221 " C0-1:P1 . . C2-3 S+ C1 . . 0 "
222 " C0-1:P1 . . C2-3 S+ C1:P1 . . 0 "
223 " C0-1:P1 . . C2-3 S+ C1:P1 . P1 0 "
224 " C0-1:P1 . . C2-3 C4-5 . . . 0 A1:4-5"
225 " C0-1:P1 . . C2-3 S+:C4-5 . . . 0 A1:4-5"
226 " C0-1 . . C2-3:P1 . . . C2 0 "
227 " C0-1 . . C2-3:P1 . . . C4-5 0 B1:4-5"
228 "C0-3:P1:S+ C2-3:P1 . . . . . . 0 A1:0-1|A2:2-3|XA2:2-3"
229 "C0-3:P1:S+ C2-3:P1 . . C1-3 . . . 0 A1:1|A2:2-3|XA2:2-3"
230 "C2-3:P1:S+ C3:P1 . . C3 . . . 0 A1:|A2:3|XA2:3 A1:P1|A2:P1"
231 "C2-3:P1:S+ C3:P1 . . C3 P0 . . 0 A1:3|A2:3 A1:P1|A2:P0"
232 "C2-3:P1:S+ C2:P1 . . C2-4 . . . 0 A1:3-4|A2:2"
233 "C2-3:P1:S+ C3:P1 . . C3 . . C0-2 0 A1:|B1:0-2 A1:P1|A2:P1"
234 "$SETUP_A123_PARTITIONS . C2-3 . . . 0 A1:|A2:2|A3:3 A1:P1|A2:P1|A3:P1"
235
236 # CPU offlining cases:
237 " C0-1 . . C2-3 S+ C4-5 . O2=0 0 A1:0-1|B1:3"
238 "C0-3:P1:S+ C2-3:P1 . . O2=0 . . . 0 A1:0-1|A2:3"
239 "C0-3:P1:S+ C2-3:P1 . . O2=0 O2=1 . . 0 A1:0-1|A2:2-3"
240 "C0-3:P1:S+ C2-3:P1 . . O1=0 . . . 0 A1:0|A2:2-3"
241 "C0-3:P1:S+ C2-3:P1 . . O1=0 O1=1 . . 0 A1:0-1|A2:2-3"
242 "C2-3:P1:S+ C3:P1 . . O3=0 O3=1 . . 0 A1:2|A2:3 A1:P1|A2:P1"
243 "C2-3:P1:S+ C3:P2 . . O3=0 O3=1 . . 0 A1:2|A2:3 A1:P1|A2:P2"
244 "C2-3:P1:S+ C3:P1 . . O2=0 O2=1 . . 0 A1:2|A2:3 A1:P1|A2:P1"
245 "C2-3:P1:S+ C3:P2 . . O2=0 O2=1 . . 0 A1:2|A2:3 A1:P1|A2:P2"
246 "C2-3:P1:S+ C3:P1 . . O2=0 . . . 0 A1:|A2:3 A1:P1|A2:P1"
247 "C2-3:P1:S+ C3:P1 . . O3=0 . . . 0 A1:2|A2: A1:P1|A2:P1"
248 "C2-3:P1:S+ C3:P1 . . T:O2=0 . . . 0 A1:3|A2:3 A1:P1|A2:P-1"
249 "C2-3:P1:S+ C3:P1 . . . T:O3=0 . . 0 A1:2|A2:2 A1:P1|A2:P-1"
250 "$SETUP_A123_PARTITIONS . O1=0 . . . 0 A1:|A2:2|A3:3 A1:P1|A2:P1|A3:P1"
251 "$SETUP_A123_PARTITIONS . O2=0 . . . 0 A1:1|A2:|A3:3 A1:P1|A2:P1|A3:P1"
252 "$SETUP_A123_PARTITIONS . O3=0 . . . 0 A1:1|A2:2|A3: A1:P1|A2:P1|A3:P1"
253 "$SETUP_A123_PARTITIONS . T:O1=0 . . . 0 A1:2-3|A2:2-3|A3:3 A1:P1|A2:P-1|A3:P-1"
254 "$SETUP_A123_PARTITIONS . . T:O2=0 . . 0 A1:1|A2:3|A3:3 A1:P1|A2:P1|A3:P-1"
255 "$SETUP_A123_PARTITIONS . . . T:O3=0 . 0 A1:1|A2:2|A3:2 A1:P1|A2:P1|A3:P-1"
256 "$SETUP_A123_PARTITIONS . T:O1=0 O1=1 . . 0 A1:1|A2:2|A3:3 A1:P1|A2:P1|A3:P1"
257 "$SETUP_A123_PARTITIONS . . T:O2=0 O2=1 . 0 A1:1|A2:2|A3:3 A1:P1|A2:P1|A3:P1"
258 "$SETUP_A123_PARTITIONS . . . T:O3=0 O3=1 0 A1:1|A2:2|A3:3 A1:P1|A2:P1|A3:P1"
259 "$SETUP_A123_PARTITIONS . T:O1=0 O2=0 O1=1 . 0 A1:1|A2:|A3:3 A1:P1|A2:P1|A3:P1"
260 "$SETUP_A123_PARTITIONS . T:O1=0 O2=0 O2=1 . 0 A1:2-3|A2:2-3|A3:3 A1:P1|A2:P-1|A3:P-1"
261
262 # old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate ISOLCPUS
263 # ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------ --------
264 #
265 # Remote partition and cpuset.cpus.exclusive tests
266 #
267 " C0-3:S+ C1-3:S+ C2-3 . X2-3 . . . 0 A1:0-3|A2:1-3|A3:2-3|XA1:2-3"
268 " C0-3:S+ C1-3:S+ C2-3 . X2-3 X2-3:P2 . . 0 A1:0-1|A2:2-3|A3:2-3 A1:P0|A2:P2 2-3"
269 " C0-3:S+ C1-3:S+ C2-3 . X2-3 X3:P2 . . 0 A1:0-2|A2:3|A3:3 A1:P0|A2:P2 3"
270 " C0-3:S+ C1-3:S+ C2-3 . X2-3 X2-3 X2-3:P2 . 0 A1:0-1|A2:1|A3:2-3 A1:P0|A3:P2 2-3"
271 " C0-3:S+ C1-3:S+ C2-3 . X2-3 X2-3 X2-3:P2:C3 . 0 A1:0-1|A2:1|A3:2-3 A1:P0|A3:P2 2-3"
272 " C0-3:S+ C1-3:S+ C2-3 C2-3 . . . P2 0 A1:0-3|A2:1-3|A3:2-3|B1:2-3 A1:P0|A3:P0|B1:P-2"
273 " C0-3:S+ C1-3:S+ C2-3 C4-5 . . . P2 0 B1:4-5 B1:P2 4-5"
274 " C0-3:S+ C1-3:S+ C2-3 C4 X2-3 X2-3 X2-3:P2 P2 0 A3:2-3|B1:4 A3:P2|B1:P2 2-4"
275 " C0-3:S+ C1-3:S+ C2-3 C4 X2-3 X2-3 X2-3:P2:C1-3 P2 0 A3:2-3|B1:4 A3:P2|B1:P2 2-4"
276 " C0-3:S+ C1-3:S+ C2-3 C4 X1-3 X1-3:P2 P2 . 0 A2:1|A3:2-3 A2:P2|A3:P2 1-3"
277 " C0-3:S+ C1-3:S+ C2-3 C4 X2-3 X2-3 X2-3:P2 P2:C4-5 0 A3:2-3|B1:4-5 A3:P2|B1:P2 2-5"
278 " C4:X0-3:S+ X1-3:S+ X2-3 . . P2 . . 0 A1:4|A2:1-3|A3:1-3 A2:P2 1-3"
279 " C4:X0-3:S+ X1-3:S+ X2-3 . . . P2 . 0 A1:4|A2:4|A3:2-3 A3:P2 2-3"
280
281 # Nested remote/local partition tests
282 " C0-3:S+ C1-3:S+ C2-3 C4-5 X2-3 X2-3:P1 P2 P1 0 A1:0-1|A2:|A3:2-3|B1:4-5 \
283 A1:P0|A2:P1|A3:P2|B1:P1 2-3"
284 " C0-3:S+ C1-3:S+ C2-3 C4 X2-3 X2-3:P1 P2 P1 0 A1:0-1|A2:|A3:2-3|B1:4 \
285 A1:P0|A2:P1|A3:P2|B1:P1 2-4|2-3"
286 " C0-3:S+ C1-3:S+ C2-3 C4 X2-3 X2-3:P1 . P1 0 A1:0-1|A2:2-3|A3:2-3|B1:4 \
287 A1:P0|A2:P1|A3:P0|B1:P1"
288 " C0-3:S+ C1-3:S+ C3 C4 X2-3 X2-3:P1 P2 P1 0 A1:0-1|A2:2|A3:3|B1:4 \
289 A1:P0|A2:P1|A3:P2|B1:P1 2-4|3"
290 " C0-4:S+ C1-4:S+ C2-4 . X2-4 X2-4:P2 X4:P1 . 0 A1:0-1|A2:2-3|A3:4 \
291 A1:P0|A2:P2|A3:P1 2-4|2-3"
292 " C0-4:S+ C1-4:S+ C2-4 . X2-4 X2-4:P2 X3-4:P1 . 0 A1:0-1|A2:2|A3:3-4 \
293 A1:P0|A2:P2|A3:P1 2"
294 " C0-4:X2-4:S+ C1-4:X2-4:S+:P2 C2-4:X4:P1 \
295 . . X5 . . 0 A1:0-4|A2:1-4|A3:2-4 \
296 A1:P0|A2:P-2|A3:P-1 ."
297 " C0-4:X2-4:S+ C1-4:X2-4:S+:P2 C2-4:X4:P1 \
298 . . . X1 . 0 A1:0-1|A2:2-4|A3:2-4 \
299 A1:P0|A2:P2|A3:P-1 2-4"
300
301 # Remote partition offline tests
302 " C0-3:S+ C1-3:S+ C2-3 . X2-3 X2-3 X2-3:P2:O2=0 . 0 A1:0-1|A2:1|A3:3 A1:P0|A3:P2 2-3"
303 " C0-3:S+ C1-3:S+ C2-3 . X2-3 X2-3 X2-3:P2:O2=0 O2=1 0 A1:0-1|A2:1|A3:2-3 A1:P0|A3:P2 2-3"
304 " C0-3:S+ C1-3:S+ C3 . X2-3 X2-3 P2:O3=0 . 0 A1:0-2|A2:1-2|A3: A1:P0|A3:P2 3"
305 " C0-3:S+ C1-3:S+ C3 . X2-3 X2-3 T:P2:O3=0 . 0 A1:0-2|A2:1-2|A3:1-2 A1:P0|A3:P-2 3|"
306
307 # An invalidated remote partition cannot self-recover from hotplug
308 " C0-3:S+ C1-3:S+ C2 . X2-3 X2-3 T:P2:O2=0 O2=1 0 A1:0-3|A2:1-3|A3:2 A1:P0|A3:P-2 ."
309
310 # cpus.exclusive.effective clearing test
311 " C0-3:S+ C1-3:S+ C2 . X2-3:X . . . 0 A1:0-3|A2:1-3|A3:2|XA1:"
312
313 # Invalid to valid remote partition transition test
314 " C0-3:S+ C1-3 . . . X3:P2 . . 0 A1:0-3|A2:1-3|XA2: A2:P-2 ."
315 " C0-3:S+ C1-3:X3:P2
316 . . X2-3 P2 . . 0 A1:0-2|A2:3|XA2:3 A2:P2 3"
317
318 # Invalid to valid local partition direct transition tests
319 " C1-3:S+:P2 X4:P2 . . . . . . 0 A1:1-3|XA1:1-3|A2:1-3:XA2: A1:P2|A2:P-2 1-3"
320 " C1-3:S+:P2 X4:P2 . . . X3:P2 . . 0 A1:1-2|XA1:1-3|A2:3:XA2:3 A1:P2|A2:P2 1-3"
321 " C0-3:P2 . . C4-6 C0-4 . . . 0 A1:0-4|B1:4-6 A1:P-2|B1:P0"
322 " C0-3:P2 . . C4-6 C0-4:C0-3 . . . 0 A1:0-3|B1:4-6 A1:P2|B1:P0 0-3"
323
324 # Local partition invalidation tests
325 " C0-3:X1-3:S+:P2 C1-3:X2-3:S+:P2 C2-3:X3:P2 \
326 . . . . . 0 A1:1|A2:2|A3:3 A1:P2|A2:P2|A3:P2 1-3"
327 " C0-3:X1-3:S+:P2 C1-3:X2-3:S+:P2 C2-3:X3:P2 \
328 . . X4 . . 0 A1:1-3|A2:1-3|A3:2-3|XA2:|XA3: A1:P2|A2:P-2|A3:P-2 1-3"
329 " C0-3:X1-3:S+:P2 C1-3:X2-3:S+:P2 C2-3:X3:P2 \
330 . . C4:X . . 0 A1:1-3|A2:1-3|A3:2-3|XA2:|XA3: A1:P2|A2:P-2|A3:P-2 1-3"
331 # Local partition CPU change tests
332 " C0-5:S+:P2 C4-5:S+:P1 . . . C3-5 . . 0 A1:0-2|A2:3-5 A1:P2|A2:P1 0-2"
333 " C0-5:S+:P2 C4-5:S+:P1 . . C1-5 . . . 0 A1:1-3|A2:4-5 A1:P2|A2:P1 1-3"
334
335 # cpus_allowed/exclusive_cpus update tests
336 " C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3 \
337 . X:C4 . P2 . 0 A1:4|A2:4|XA2:|XA3:|A3:4 \
338 A1:P0|A3:P-2 ."
339 " C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3 \
340 . X1 . P2 . 0 A1:0-3|A2:1-3|XA1:1|XA2:|XA3:|A3:2-3 \
341 A1:P0|A3:P-2 ."
342 " C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3 \
343 . . X3 P2 . 0 A1:0-2|A2:1-2|XA2:3|XA3:3|A3:3 \
344 A1:P0|A3:P2 3"
345 " C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3:P2 \
346 . . X3 . . 0 A1:0-2|A2:1-2|XA2:3|XA3:3|A3:3|XA3:3 \
347 A1:P0|A3:P2 3"
348 " C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3:P2 \
349 . X4 . . . 0 A1:0-3|A2:1-3|A3:2-3|XA1:4|XA2:|XA3 \
350 A1:P0|A3:P-2"
351
352 # old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate ISOLCPUS
353 # ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------ --------
354 #
355 # Incorrect change to cpuset.cpus[.exclusive] invalidates partition root
356 #
357 # Adding CPUs to partition root that are not in parent's
358 # cpuset.cpus is allowed, but those extra CPUs are ignored.
359 "C2-3:P1:S+ C3:P1 . . . C2-4 . . 0 A1:|A2:2-3 A1:P1|A2:P1"
360
361 # Taking away all CPUs from parent or itself if there are tasks
362 # will make the partition invalid.
363 "C2-3:P1:S+ C3:P1 . . T C2-3 . . 0 A1:2-3|A2:2-3 A1:P1|A2:P-1"
364 " C3:P1:S+ C3 . . T P1 . . 0 A1:3|A2:3 A1:P1|A2:P-1"
365 "$SETUP_A123_PARTITIONS . T:C2-3 . . . 0 A1:2-3|A2:2-3|A3:3 A1:P1|A2:P-1|A3:P-1"
366 "$SETUP_A123_PARTITIONS . T:C2-3:C1-3 . . . 0 A1:1|A2:2|A3:3 A1:P1|A2:P1|A3:P1"
367
368 # Changing a partition root to member makes child partitions invalid
369 "C2-3:P1:S+ C3:P1 . . P0 . . . 0 A1:2-3|A2:3 A1:P0|A2:P-1"
370 "$SETUP_A123_PARTITIONS . C2-3 P0 . . 0 A1:2-3|A2:2-3|A3:3 A1:P1|A2:P0|A3:P-1"
371
372 # cpuset.cpus can contains cpus not in parent's cpuset.cpus as long
373 # as they overlap.
374 "C2-3:P1:S+ . . . . C3-4:P1 . . 0 A1:2|A2:3 A1:P1|A2:P1"
375
376 # Deletion of CPUs distributed to child cgroup is allowed.
377 "C0-1:P1:S+ C1 . C2-3 C4-5 . . . 0 A1:4-5|A2:4-5"
378
379 # To become a valid partition root, cpuset.cpus must overlap parent's
380 # cpuset.cpus.
381 " C0-1:P1 . . C2-3 S+ C4-5:P1 . . 0 A1:0-1|A2:0-1 A1:P1|A2:P-1"
382
383 # Enabling partition with child cpusets is allowed
384 " C0-1:S+ C1 . C2-3 P1 . . . 0 A1:0-1|A2:1 A1:P1"
385
386 # A partition root with non-partition root parent is invalid| but it
387 # can be made valid if its parent becomes a partition root too.
388 " C0-1:S+ C1 . C2-3 . P2 . . 0 A1:0-1|A2:1 A1:P0|A2:P-2"
389 " C0-1:S+ C1:P2 . C2-3 P1 . . . 0 A1:0|A2:1 A1:P1|A2:P2 0-1|1"
390
391 # A non-exclusive cpuset.cpus change will invalidate partition and its siblings
392 " C0-1:P1 . . C2-3 C0-2 . . . 0 A1:0-2|B1:2-3 A1:P-1|B1:P0"
393 " C0-1:P1 . . P1:C2-3 C0-2 . . . 0 A1:0-2|B1:2-3 A1:P-1|B1:P-1"
394 " C0-1 . . P1:C2-3 C0-2 . . . 0 A1:0-2|B1:2-3 A1:P0|B1:P-1"
395
396 # cpuset.cpus can overlap with sibling cpuset.cpus.exclusive but not subsumed by it
397 " C0-3 . . C4-5 X5 . . . 0 A1:0-3|B1:4-5"
398
399 # Child partition root that try to take all CPUs from parent partition
400 # with tasks will remain invalid.
401 " C1-4:P1:S+ P1 . . . . . . 0 A1:1-4|A2:1-4 A1:P1|A2:P-1"
402 " C1-4:P1:S+ P1 . . . C1-4 . . 0 A1|A2:1-4 A1:P1|A2:P1"
403 " C1-4:P1:S+ P1 . . T C1-4 . . 0 A1:1-4|A2:1-4 A1:P1|A2:P-1"
404
405 # Clearing of cpuset.cpus with a preset cpuset.cpus.exclusive shouldn't
406 # affect cpuset.cpus.exclusive.effective.
407 " C1-4:X3:S+ C1:X3 . . . C . . 0 A2:1-4|XA2:3"
408
409 # cpuset.cpus can contain CPUs that overlap a sibling cpuset with cpus.exclusive
410 # but creating a local partition out of it is not allowed. Similarly and change
411 # in cpuset.cpus of a local partition that overlaps sibling exclusive CPUs will
412 # invalidate it.
413 " CX1-4:S+ CX2-4:P2 . C5-6 . . . P1 0 A1:1|A2:2-4|B1:5-6|XB1:5-6 \
414 A1:P0|A2:P2:B1:P1 2-4"
415 " CX1-4:S+ CX2-4:P2 . C3-6 . . . P1 0 A1:1|A2:2-4|B1:5-6 \
416 A1:P0|A2:P2:B1:P-1 2-4"
417 " CX1-4:S+ CX2-4:P2 . C5-6 . . . P1:C3-6 0 A1:1|A2:2-4|B1:5-6 \
418 A1:P0|A2:P2:B1:P-1 2-4"
419
420 # old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate ISOLCPUS
421 # ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------ --------
422 # Failure cases:
423
424 # A task cannot be added to a partition with no cpu
425 "C2-3:P1:S+ C3:P1 . . O2=0:T . . . 1 A1:|A2:3 A1:P1|A2:P1"
426
427 # Changes to cpuset.cpus.exclusive that violate exclusivity rule is rejected
428 " C0-3 . . C4-5 X0-3 . . X3-5 1 A1:0-3|B1:4-5"
429
430 # cpuset.cpus cannot be a subset of sibling cpuset.cpus.exclusive
431 " C0-3 . . C4-5 X3-5 . . . 1 A1:0-3|B1:4-5"
432)
433
434#
435# Cpuset controller remote partition test matrix.
436#
437# Cgroup test hierarchy
438#
439# root
440# |
441# rtest (cpuset.cpus.exclusive=1-7)
442# |
443# +------+------+
444# | |
445# p1 p2
446# +--+--+ +--+--+
447# | | | |
448# c11 c12 c21 c22
449#
450# REMOTE_TEST_MATRIX uses the same notational convention as TEST_MATRIX.
451# Only CPUs 1-7 should be used.
452#
453REMOTE_TEST_MATRIX=(
454 # old-p1 old-p2 old-c11 old-c12 old-c21 old-c22
455 # new-p1 new-p2 new-c11 new-c12 new-c21 new-c22 ECPUs Pstate ISOLCPUS
456 # ------ ------ ------- ------- ------- ------- ----- ------ --------
457 " X1-3:S+ X4-6:S+ X1-2 X3 X4-5 X6 \
458 . . P2 P2 P2 P2 c11:1-2|c12:3|c21:4-5|c22:6 \
459 c11:P2|c12:P2|c21:P2|c22:P2 1-6"
460 " CX1-4:S+ . X1-2:P2 C3 . . \
461 . . . C3-4 . . p1:3-4|c11:1-2|c12:3-4 \
462 p1:P0|c11:P2|c12:P0 1-2"
463 " CX1-4:S+ . X1-2:P2 . . . \
464 X2-4 . . . . . p1:1,3-4|c11:2 \
465 p1:P0|c11:P2 2"
466 " CX1-5:S+ . X1-2:P2 X3-5:P1 . . \
467 X2-4 . . . . . p1:1,5|c11:2|c12:3-4 \
468 p1:P0|c11:P2|c12:P1 2"
469 " CX1-4:S+ . X1-2:P2 X3-4:P1 . . \
470 . . X2 . . . p1:1|c11:2|c12:3-4 \
471 p1:P0|c11:P2|c12:P1 2"
472 # p1 as member, will get its effective CPUs from its parent rtest
473 " CX1-4:S+ . X1-2:P2 X3-4:P1 . . \
474 . . X1 CX2-4 . . p1:5-7|c11:1|c12:2-4 \
475 p1:P0|c11:P2|c12:P1 1"
476 " CX1-4:S+ X5-6:P1:S+ . . . . \
477 . . X1-2:P2 X4-5:P1 . X1-7:P2 p1:3|c11:1-2|c12:4:c22:5-6 \
478 p1:P0|p2:P1|c11:P2|c12:P1|c22:P2 \
479 1-2,4-6|1-2,5-6"
480)
481
482#
483# Write to the cpu online file
484# $1 - <c>=<v> where <c> = cpu number, <v> value to be written
485#
486write_cpu_online()
487{
488 CPU=${1%=*}
489 VAL=${1#*=}
490 CPUFILE=//sys/devices/system/cpu/cpu${CPU}/online
491 if [[ $VAL -eq 0 ]]
492 then
493 OFFLINE_CPUS="$OFFLINE_CPUS $CPU"
494 else
495 [[ -n "$OFFLINE_CPUS" ]] && {
496 OFFLINE_CPUS=$(echo $CPU $CPU $OFFLINE_CPUS | fmt -1 |\
497 sort | uniq -u)
498 }
499 fi
500 echo $VAL > $CPUFILE
501 pause 0.05
502}
503
504#
505# Set controller state
506# $1 - cgroup directory
507# $2 - state
508# $3 - showerr
509#
510# The presence of ":" in state means transition from one to the next.
511#
512set_ctrl_state()
513{
514 TMPMSG=/tmp/.msg_$$
515 CGRP=$1
516 STATE=$2
517 SHOWERR=${3}
518 CTRL=${CTRL:=$CONTROLLER}
519 HASERR=0
520 REDIRECT="2> $TMPMSG"
521 [[ -z "$STATE" || "$STATE" = '.' ]] && return 0
522 [[ $VERBOSE -gt 0 ]] && SHOWERR=1
523
524 rm -f $TMPMSG
525 for CMD in $(echo $STATE | sed -e "s/:/ /g")
526 do
527 TFILE=$CGRP/cgroup.procs
528 SFILE=$CGRP/cgroup.subtree_control
529 PFILE=$CGRP/cpuset.cpus.partition
530 CFILE=$CGRP/cpuset.cpus
531 XFILE=$CGRP/cpuset.cpus.exclusive
532 case $CMD in
533 S*) PREFIX=${CMD#?}
534 COMM="echo ${PREFIX}${CTRL} > $SFILE"
535 eval $COMM $REDIRECT
536 ;;
537 X*)
538 CPUS=${CMD#?}
539 COMM="echo $CPUS > $XFILE"
540 eval $COMM $REDIRECT
541 ;;
542 CX*)
543 CPUS=${CMD#??}
544 COMM="echo $CPUS > $CFILE; echo $CPUS > $XFILE"
545 eval $COMM $REDIRECT
546 ;;
547 C*) CPUS=${CMD#?}
548 COMM="echo $CPUS > $CFILE"
549 eval $COMM $REDIRECT
550 ;;
551 P*) VAL=${CMD#?}
552 case $VAL in
553 0) VAL=member
554 ;;
555 1) VAL=root
556 ;;
557 2) VAL=isolated
558 ;;
559 *)
560 echo "Invalid partition state - $VAL"
561 exit 1
562 ;;
563 esac
564 COMM="echo $VAL > $PFILE"
565 eval $COMM $REDIRECT
566 ;;
567 O*) VAL=${CMD#?}
568 write_cpu_online $VAL
569 ;;
570 T*) COMM="echo 0 > $TFILE"
571 eval $COMM $REDIRECT
572 ;;
573 *) echo "Unknown command: $CMD"
574 exit 1
575 ;;
576 esac
577 RET=$?
578 [[ $RET -ne 0 ]] && {
579 [[ -n "$SHOWERR" ]] && {
580 echo "$COMM"
581 cat $TMPMSG
582 }
583 HASERR=1
584 }
585 pause 0.01
586 rm -f $TMPMSG
587 done
588 return $HASERR
589}
590
591set_ctrl_state_noerr()
592{
593 CGRP=$1
594 STATE=$2
595 [[ -d $CGRP ]] || mkdir $CGRP
596 set_ctrl_state $CGRP $STATE 1
597 [[ $? -ne 0 ]] && {
598 echo "ERROR: Failed to set $2 to cgroup $1!"
599 exit 1
600 }
601}
602
603online_cpus()
604{
605 [[ -n "OFFLINE_CPUS" ]] && {
606 for C in $OFFLINE_CPUS
607 do
608 write_cpu_online ${C}=1
609 done
610 }
611}
612
613#
614# Remove all the test cgroup directories
615#
616reset_cgroup_states()
617{
618 echo 0 > $CGROUP2/cgroup.procs
619 online_cpus
620 rmdir $RESET_LIST > /dev/null 2>&1
621}
622
623dump_states()
624{
625 for DIR in $CGROUP_LIST
626 do
627 CPUS=$DIR/cpuset.cpus
628 ECPUS=$DIR/cpuset.cpus.effective
629 XCPUS=$DIR/cpuset.cpus.exclusive
630 XECPUS=$DIR/cpuset.cpus.exclusive.effective
631 PRS=$DIR/cpuset.cpus.partition
632 PCPUS=$DIR/.__DEBUG__.cpuset.cpus.subpartitions
633 ISCPUS=$DIR/cpuset.cpus.isolated
634 [[ -e $CPUS ]] && echo "$CPUS: $(cat $CPUS)"
635 [[ -e $XCPUS ]] && echo "$XCPUS: $(cat $XCPUS)"
636 [[ -e $ECPUS ]] && echo "$ECPUS: $(cat $ECPUS)"
637 [[ -e $XECPUS ]] && echo "$XECPUS: $(cat $XECPUS)"
638 [[ -e $PRS ]] && echo "$PRS: $(cat $PRS)"
639 [[ -e $PCPUS ]] && echo "$PCPUS: $(cat $PCPUS)"
640 [[ -e $ISCPUS ]] && echo "$ISCPUS: $(cat $ISCPUS)"
641 done
642}
643
644#
645# Set the actual cgroup directory into $CGRP_DIR
646# $1 - cgroup name
647#
648set_cgroup_dir()
649{
650 CGRP_DIR=$1
651 [[ $CGRP_DIR = A2 ]] && CGRP_DIR=A1/A2
652 [[ $CGRP_DIR = A3 ]] && CGRP_DIR=A1/A2/A3
653 [[ $CGRP_DIR = c11 ]] && CGRP_DIR=p1/c11
654 [[ $CGRP_DIR = c12 ]] && CGRP_DIR=p1/c12
655 [[ $CGRP_DIR = c21 ]] && CGRP_DIR=p2/c21
656 [[ $CGRP_DIR = c22 ]] && CGRP_DIR=p2/c22
657}
658
659#
660# Check effective cpus
661# $1 - check string, format: <cgroup>:<cpu-list>[|<cgroup>:<cpu-list>]*
662#
663check_effective_cpus()
664{
665 CHK_STR=$1
666 for CHK in $(echo $CHK_STR | sed -e "s/|/ /g")
667 do
668 set -- $(echo $CHK | sed -e "s/:/ /g")
669 CGRP=$1
670 EXPECTED_CPUS=$2
671 ACTUAL_CPUS=
672 if [[ $CGRP = X* ]]
673 then
674 CGRP=${CGRP#X}
675 FILE=cpuset.cpus.exclusive.effective
676 else
677 FILE=cpuset.cpus.effective
678 fi
679 set_cgroup_dir $CGRP
680 [[ -e $CGRP_DIR/$FILE ]] || return 1
681 ACTUAL_CPUS=$(cat $CGRP_DIR/$FILE)
682 [[ $EXPECTED_CPUS = $ACTUAL_CPUS ]] || return 1
683 done
684}
685
686#
687# Check cgroup states
688# $1 - check string, format: <cgroup>:<state>[|<cgroup>:<state>]*
689#
690check_cgroup_states()
691{
692 CHK_STR=$1
693 for CHK in $(echo $CHK_STR | sed -e "s/|/ /g")
694 do
695 set -- $(echo $CHK | sed -e "s/:/ /g")
696 CGRP=$1
697 EXPECTED_STATE=$2
698 FILE=
699 EVAL=$(expr substr $EXPECTED_STATE 2 2)
700
701 set_cgroup_dir $CGRP
702 case $EXPECTED_STATE in
703 P*) FILE=$CGRP_DIR/cpuset.cpus.partition
704 ;;
705 *) echo "Unknown state: $EXPECTED_STATE!"
706 exit 1
707 ;;
708 esac
709 ACTUAL_STATE=$(cat $FILE)
710
711 case "$ACTUAL_STATE" in
712 member) VAL=0
713 ;;
714 root) VAL=1
715 ;;
716 isolated)
717 VAL=2
718 ;;
719 "root invalid"*)
720 VAL=-1
721 ;;
722 "isolated invalid"*)
723 VAL=-2
724 ;;
725 esac
726 [[ $EVAL != $VAL ]] && return 1
727
728 #
729 # For root partition, dump sched-domains info to console if
730 # verbose mode set for manual comparison with sched debug info.
731 #
732 [[ $VAL -eq 1 && $VERBOSE -gt 0 ]] && {
733 DOMS=$(cat $CGRP_DIR/cpuset.cpus.effective)
734 [[ -n "$DOMS" ]] &&
735 echo " [$CGRP_DIR] sched-domain: $DOMS" > $CONSOLE
736 }
737 done
738 return 0
739}
740
741#
742# Get isolated (including offline) CPUs by looking at
743# /sys/kernel/debug/sched/domains and cpuset.cpus.isolated control file,
744# if available, and compare that with the expected value.
745#
746# Note that isolated CPUs from the sched/domains context include offline
747# CPUs as well as CPUs in non-isolated 1-CPU partition. Those CPUs may
748# not be included in the cpuset.cpus.isolated control file which contains
749# only CPUs in isolated partitions as well as those that are isolated at
750# boot time.
751#
752# $1 - expected isolated cpu list(s) <isolcpus1>{,<isolcpus2>}
753# <isolcpus1> - expected sched/domains value
754# <isolcpus2> - cpuset.cpus.isolated value = <isolcpus1> if not defined
755#
756check_isolcpus()
757{
758 EXPECTED_ISOLCPUS=$1
759 ISCPUS=${CGROUP2}/cpuset.cpus.isolated
760 ISOLCPUS=$(cat $ISCPUS)
761 LASTISOLCPU=
762 SCHED_DOMAINS=/sys/kernel/debug/sched/domains
763 if [[ $EXPECTED_ISOLCPUS = . ]]
764 then
765 EXPECTED_ISOLCPUS=
766 EXPECTED_SDOMAIN=
767 elif [[ $(expr $EXPECTED_ISOLCPUS : ".*|.*") > 0 ]]
768 then
769 set -- $(echo $EXPECTED_ISOLCPUS | sed -e "s/|/ /g")
770 EXPECTED_ISOLCPUS=$2
771 EXPECTED_SDOMAIN=$1
772 else
773 EXPECTED_SDOMAIN=$EXPECTED_ISOLCPUS
774 fi
775
776 #
777 # Appending pre-isolated CPUs
778 # Even though CPU #8 isn't used for testing, it can't be pre-isolated
779 # to make appending those CPUs easier.
780 #
781 [[ -n "$BOOT_ISOLCPUS" ]] && {
782 EXPECTED_ISOLCPUS=${EXPECTED_ISOLCPUS:+${EXPECTED_ISOLCPUS},}${BOOT_ISOLCPUS}
783 EXPECTED_SDOMAIN=${EXPECTED_SDOMAIN:+${EXPECTED_SDOMAIN},}${BOOT_ISOLCPUS}
784 }
785
786 #
787 # Check cpuset.cpus.isolated cpumask
788 #
789 [[ "$EXPECTED_ISOLCPUS" != "$ISOLCPUS" ]] && {
790 # Take a 50ms pause and try again
791 pause 0.05
792 ISOLCPUS=$(cat $ISCPUS)
793 }
794 [[ "$EXPECTED_ISOLCPUS" != "$ISOLCPUS" ]] && return 1
795 ISOLCPUS=
796 EXPECTED_ISOLCPUS=$EXPECTED_SDOMAIN
797
798 #
799 # Use the sched domain in debugfs to check isolated CPUs, if available
800 #
801 [[ -d $SCHED_DOMAINS ]] || return 0
802
803 for ((CPU=0; CPU < $NR_CPUS; CPU++))
804 do
805 [[ -n "$(ls ${SCHED_DOMAINS}/cpu$CPU)" ]] && continue
806
807 if [[ -z "$LASTISOLCPU" ]]
808 then
809 ISOLCPUS=$CPU
810 LASTISOLCPU=$CPU
811 elif [[ "$LASTISOLCPU" -eq $((CPU - 1)) ]]
812 then
813 echo $ISOLCPUS | grep -q "\<$LASTISOLCPU\$"
814 if [[ $? -eq 0 ]]
815 then
816 ISOLCPUS=${ISOLCPUS}-
817 fi
818 LASTISOLCPU=$CPU
819 else
820 if [[ $ISOLCPUS = *- ]]
821 then
822 ISOLCPUS=${ISOLCPUS}$LASTISOLCPU
823 fi
824 ISOLCPUS=${ISOLCPUS},$CPU
825 LASTISOLCPU=$CPU
826 fi
827 done
828 [[ "$ISOLCPUS" = *- ]] && ISOLCPUS=${ISOLCPUS}$LASTISOLCPU
829
830 [[ "$EXPECTED_SDOMAIN" = "$ISOLCPUS" ]]
831}
832
833test_fail()
834{
835 TESTNUM=$1
836 TESTTYPE=$2
837 ADDINFO=$3
838 echo "Test $TEST[$TESTNUM] failed $TESTTYPE check!"
839 [[ -n "$ADDINFO" ]] && echo "*** $ADDINFO ***"
840 eval echo \${$TEST[$I]}
841 echo
842 dump_states
843 exit 1
844}
845
846#
847# Check to see if there are unexpected isolated CPUs left beyond the boot
848# time isolated ones.
849#
850null_isolcpus_check()
851{
852 [[ $VERBOSE -gt 0 ]] || return 0
853 # Retry a few times before printing error
854 RETRY=0
855 while [[ $RETRY -lt 8 ]]
856 do
857 pause 0.02
858 check_isolcpus "."
859 [[ $? -eq 0 ]] && return 0
860 ((RETRY++))
861 done
862 echo "Unexpected isolated CPUs: $ISOLCPUS"
863 dump_states
864 exit 1
865}
866
867#
868# Check state transition test result
869# $1 - Test number
870# $2 - Expected effective CPU values
871# $3 - Expected partition states
872# $4 - Expected isolated CPUs
873#
874check_test_results()
875{
876 _NR=$1
877 _ECPUS="$2"
878 _PSTATES="$3"
879 _ISOLCPUS="$4"
880
881 [[ -n "$_ECPUS" && "$_ECPUS" != . ]] && {
882 check_effective_cpus $_ECPUS
883 [[ $? -ne 0 ]] && test_fail $_NR "effective CPU" \
884 "Cgroup $CGRP: expected $EXPECTED_CPUS, got $ACTUAL_CPUS"
885 }
886
887 [[ -n "$_PSTATES" && "$_PSTATES" != . ]] && {
888 check_cgroup_states $_PSTATES
889 [[ $? -ne 0 ]] && test_fail $_NR states \
890 "Cgroup $CGRP: expected $EXPECTED_STATE, got $ACTUAL_STATE"
891 }
892
893 # Compare the expected isolated CPUs with the actual ones,
894 # if available
895 [[ -n "$_ISOLCPUS" ]] && {
896 check_isolcpus $_ISOLCPUS
897 [[ $? -ne 0 ]] && {
898 [[ -n "$BOOT_ISOLCPUS" ]] && _ISOLCPUS=${_ISOLCPUS},${BOOT_ISOLCPUS}
899 test_fail $_NR "isolated CPU" \
900 "Expect $_ISOLCPUS, get $ISOLCPUS instead"
901 }
902 }
903 reset_cgroup_states
904 #
905 # Check to see if effective cpu list changes
906 #
907 _NEWLIST=$(cat $CGROUP2/cpuset.cpus.effective)
908 RETRY=0
909 while [[ $_NEWLIST != $CPULIST && $RETRY -lt 8 ]]
910 do
911 # Wait a bit longer & recheck a few times
912 pause 0.02
913 ((RETRY++))
914 _NEWLIST=$(cat $CGROUP2/cpuset.cpus.effective)
915 done
916 [[ $_NEWLIST != $CPULIST ]] && {
917 echo "Effective cpus changed to $_NEWLIST after test $_NR!"
918 exit 1
919 }
920 null_isolcpus_check
921 [[ $VERBOSE -gt 0 ]] && echo "Test $I done."
922}
923
924#
925# Run cpuset state transition test
926# $1 - test matrix name
927#
928# This test is somewhat fragile as delays (sleep x) are added in various
929# places to make sure state changes are fully propagated before the next
930# action. These delays may need to be adjusted if running in a slower machine.
931#
932run_state_test()
933{
934 TEST=$1
935 CONTROLLER=cpuset
936 CGROUP_LIST=". A1 A1/A2 A1/A2/A3 B1"
937 RESET_LIST="A1/A2/A3 A1/A2 A1 B1"
938 I=0
939 eval CNT="\${#$TEST[@]}"
940
941 reset_cgroup_states
942 console_msg "Running state transition test ..."
943
944 while [[ $I -lt $CNT ]]
945 do
946 echo "Running test $I ..." > $CONSOLE
947 [[ $VERBOSE -gt 1 ]] && {
948 echo ""
949 eval echo \${$TEST[$I]}
950 }
951 eval set -- "\${$TEST[$I]}"
952 OLD_A1=$1
953 OLD_A2=$2
954 OLD_A3=$3
955 OLD_B1=$4
956 NEW_A1=$5
957 NEW_A2=$6
958 NEW_A3=$7
959 NEW_B1=$8
960 RESULT=$9
961 ECPUS=${10}
962 STATES=${11}
963 ICPUS=${12}
964
965 set_ctrl_state_noerr A1 $OLD_A1
966 set_ctrl_state_noerr A1/A2 $OLD_A2
967 set_ctrl_state_noerr A1/A2/A3 $OLD_A3
968 set_ctrl_state_noerr B1 $OLD_B1
969
970 RETVAL=0
971 set_ctrl_state A1 $NEW_A1; ((RETVAL += $?))
972 set_ctrl_state A1/A2 $NEW_A2; ((RETVAL += $?))
973 set_ctrl_state A1/A2/A3 $NEW_A3; ((RETVAL += $?))
974 set_ctrl_state B1 $NEW_B1; ((RETVAL += $?))
975
976 [[ $RETVAL -ne $RESULT ]] && test_fail $I result
977
978 check_test_results $I "$ECPUS" "$STATES" "$ICPUS"
979 ((I++))
980 done
981 echo "All $I tests of $TEST PASSED."
982}
983
984#
985# Run cpuset remote partition state transition test
986# $1 - test matrix name
987#
988run_remote_state_test()
989{
990 TEST=$1
991 CONTROLLER=cpuset
992 [[ -d rtest ]] || mkdir rtest
993 cd rtest
994 echo +cpuset > cgroup.subtree_control
995 echo "1-7" > cpuset.cpus
996 echo "1-7" > cpuset.cpus.exclusive
997 CGROUP_LIST=".. . p1 p2 p1/c11 p1/c12 p2/c21 p2/c22"
998 RESET_LIST="p1/c11 p1/c12 p2/c21 p2/c22 p1 p2"
999 I=0
1000 eval CNT="\${#$TEST[@]}"
1001
1002 reset_cgroup_states
1003 console_msg "Running remote partition state transition test ..."
1004
1005 while [[ $I -lt $CNT ]]
1006 do
1007 echo "Running test $I ..." > $CONSOLE
1008 [[ $VERBOSE -gt 1 ]] && {
1009 echo ""
1010 eval echo \${$TEST[$I]}
1011 }
1012 eval set -- "\${$TEST[$I]}"
1013 OLD_p1=$1
1014 OLD_p2=$2
1015 OLD_c11=$3
1016 OLD_c12=$4
1017 OLD_c21=$5
1018 OLD_c22=$6
1019 NEW_p1=$7
1020 NEW_p2=$8
1021 NEW_c11=$9
1022 NEW_c12=${10}
1023 NEW_c21=${11}
1024 NEW_c22=${12}
1025 ECPUS=${13}
1026 STATES=${14}
1027 ICPUS=${15}
1028
1029 set_ctrl_state_noerr p1 $OLD_p1
1030 set_ctrl_state_noerr p2 $OLD_p2
1031 set_ctrl_state_noerr p1/c11 $OLD_c11
1032 set_ctrl_state_noerr p1/c12 $OLD_c12
1033 set_ctrl_state_noerr p2/c21 $OLD_c21
1034 set_ctrl_state_noerr p2/c22 $OLD_c22
1035
1036 RETVAL=0
1037 set_ctrl_state p1 $NEW_p1 ; ((RETVAL += $?))
1038 set_ctrl_state p2 $NEW_p2 ; ((RETVAL += $?))
1039 set_ctrl_state p1/c11 $NEW_c11; ((RETVAL += $?))
1040 set_ctrl_state p1/c12 $NEW_c12; ((RETVAL += $?))
1041 set_ctrl_state p2/c21 $NEW_c21; ((RETVAL += $?))
1042 set_ctrl_state p2/c22 $NEW_c22; ((RETVAL += $?))
1043
1044 [[ $RETVAL -ne 0 ]] && test_fail $I result
1045
1046 check_test_results $I "$ECPUS" "$STATES" "$ICPUS"
1047 ((I++))
1048 done
1049 cd ..
1050 rmdir rtest
1051 echo "All $I tests of $TEST PASSED."
1052}
1053
1054#
1055# Testing the new "isolated" partition root type
1056#
1057test_isolated()
1058{
1059 cd $CGROUP2/test
1060 echo 2-3 > cpuset.cpus
1061 TYPE=$(cat cpuset.cpus.partition)
1062 [[ $TYPE = member ]] || echo member > cpuset.cpus.partition
1063
1064 console_msg "Change from member to root"
1065 test_partition root
1066
1067 console_msg "Change from root to isolated"
1068 test_partition isolated
1069
1070 console_msg "Change from isolated to member"
1071 test_partition member
1072
1073 console_msg "Change from member to isolated"
1074 test_partition isolated
1075
1076 console_msg "Change from isolated to root"
1077 test_partition root
1078
1079 console_msg "Change from root to member"
1080 test_partition member
1081
1082 #
1083 # Testing partition root with no cpu
1084 #
1085 console_msg "Distribute all cpus to child partition"
1086 echo +cpuset > cgroup.subtree_control
1087 test_partition root
1088
1089 mkdir A1
1090 cd A1
1091 echo 2-3 > cpuset.cpus
1092 test_partition root
1093 test_effective_cpus 2-3
1094 cd ..
1095 test_effective_cpus ""
1096
1097 console_msg "Moving task to partition test"
1098 test_add_proc "No space left"
1099 cd A1
1100 test_add_proc ""
1101 cd ..
1102
1103 console_msg "Shrink and expand child partition"
1104 cd A1
1105 echo 2 > cpuset.cpus
1106 cd ..
1107 test_effective_cpus 3
1108 cd A1
1109 echo 2-3 > cpuset.cpus
1110 cd ..
1111 test_effective_cpus ""
1112
1113 # Cleaning up
1114 console_msg "Cleaning up"
1115 echo $$ > $CGROUP2/cgroup.procs
1116 [[ -d A1 ]] && rmdir A1
1117 null_isolcpus_check
1118 pause 0.05
1119}
1120
1121#
1122# Wait for inotify event for the given file and read it
1123# $1: cgroup file to wait for
1124# $2: file to store the read result
1125#
1126wait_inotify()
1127{
1128 CGROUP_FILE=$1
1129 OUTPUT_FILE=$2
1130
1131 $WAIT_INOTIFY $CGROUP_FILE
1132 cat $CGROUP_FILE > $OUTPUT_FILE
1133}
1134
1135#
1136# Test if inotify events are properly generated when going into and out of
1137# invalid partition state.
1138#
1139test_inotify()
1140{
1141 ERR=0
1142 PRS=/tmp/.prs_$$
1143 cd $CGROUP2/test
1144 [[ -f $WAIT_INOTIFY ]] || {
1145 echo "wait_inotify not found, inotify test SKIPPED."
1146 return
1147 }
1148
1149 pause 0.01
1150 echo 1 > cpuset.cpus
1151 echo 0 > cgroup.procs
1152 echo root > cpuset.cpus.partition
1153 pause 0.01
1154 rm -f $PRS
1155 wait_inotify $PWD/cpuset.cpus.partition $PRS &
1156 pause 0.01
1157 set_ctrl_state . "O1=0"
1158 pause 0.01
1159 check_cgroup_states ".:P-1"
1160 if [[ $? -ne 0 ]]
1161 then
1162 echo "FAILED: Inotify test - partition not invalid"
1163 ERR=1
1164 elif [[ ! -f $PRS ]]
1165 then
1166 echo "FAILED: Inotify test - event not generated"
1167 ERR=1
1168 kill %1
1169 elif [[ $(cat $PRS) != "root invalid"* ]]
1170 then
1171 echo "FAILED: Inotify test - incorrect state"
1172 cat $PRS
1173 ERR=1
1174 fi
1175 online_cpus
1176 echo member > cpuset.cpus.partition
1177 echo 0 > ../cgroup.procs
1178 if [[ $ERR -ne 0 ]]
1179 then
1180 exit 1
1181 else
1182 echo "Inotify test PASSED"
1183 fi
1184 echo member > cpuset.cpus.partition
1185 echo "" > cpuset.cpus
1186}
1187
1188trap cleanup 0 2 3 6
1189run_state_test TEST_MATRIX
1190run_remote_state_test REMOTE_TEST_MATRIX
1191test_isolated
1192test_inotify
1193echo "All tests PASSED."