selftests/cgroup/test_cpuset_prs.sh

25 SUBPARTS_CPUS=$CGROUP2/.__DEBUG__.cpuset.cpus.subpartitions
26 CPULIST=$(cat $CGROUP2/cpuset.cpus.effective)
29 [[ $NR_CPUS -lt 8 ]] && skip_test "Test needs at least 8 cpus available!"
79 echo 0-6 > test/cpuset.cpus
80 echo root > test/cpuset.cpus.partition
81 cat test/cpuset.cpus.partition | grep -q invalid
83 echo member > test/cpuset.cpus.partition
84 echo "" > test/cpuset.cpus
88 # If isolated CPUs have been reserved at boot time (as shown in
89 # cpuset.cpus.isolated), these isolated CPUs should be outside of CPUs 0-8
92 # these isolated CPUs are leftover from previous run and have just been
95 # These pre-isolated CPUs should stay in an isolated state throughout the
98 BOOT_ISOLCPUS=$(cat $CGROUP2/cpuset.cpus.isolated)
101 	BOOT_ISOLCPUS=$(cat $CGROUP2/cpuset.cpus.isolated)
106 		skip_test "Pre-isolated CPUs ($BOOT_ISOLCPUS) overlap CPUs to be tested"
107 	echo "Pre-isolated CPUs: $BOOT_ISOLCPUS"
146 	echo $EXPECTED_VAL > cpuset.cpus.partition
148 	ACTUAL_VAL=$(cat cpuset.cpus.partition)
150 		echo "cpuset.cpus.partition: expect $EXPECTED_VAL, found $ACTUAL_VAL"
159 	ACTUAL_VAL=$(cat cpuset.cpus.effective)
161 		echo "cpuset.cpus.effective: expect '$EXPECTED_VAL', found '$ACTUAL_VAL'"
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
201 #  CX<l> = add cpu-list to both cpuset.cpus and cpuset.cpus.exclusive
204 # ECPUs    - effective CPUs of cpusets
206 # ISOLCPUS - isolated CPUs (<icpus>[,<icpus2>])
209 # sched-debug matching which includes offline CPUs and single-CPU partitions
210 # while the second one is for matching cpuset.cpus.isolated.
265 	# Remote partition and cpuset.cpus.exclusive tests
310 	# cpus.exclusive.effective clearing test
355 	# Incorrect change to cpuset.cpus[.exclusive] invalidates partition root
357 	# Adding CPUs to partition root that are not in parent's
358 	# cpuset.cpus is allowed, but those extra CPUs are ignored.
361 	# Taking away all CPUs from parent or itself if there are tasks
372 	# cpuset.cpus can contains cpus not in parent's cpuset.cpus as long
376 	# Deletion of CPUs distributed to child cgroup is allowed.
379 	# To become a valid partition root, cpuset.cpus must overlap parent's
380 	# cpuset.cpus.
391 	# A non-exclusive cpuset.cpus change will invalidate partition and its siblings
396 	# cpuset.cpus can overlap with sibling cpuset.cpus.exclusive but not subsumed by it
399 	# Child partition root that try to take all CPUs from parent partition
405 	# Clearing of cpuset.cpus with a preset cpuset.cpus.exclusive shouldn't
406 	# affect cpuset.cpus.exclusive.effective.
409 	# cpuset.cpus can contain CPUs that overlap a sibling cpuset with cpus.exclusive
411 	# in cpuset.cpus of a local partition that overlaps sibling exclusive CPUs will
427 	# Changes to cpuset.cpus.exclusive that violate exclusivity rule is rejected
430 	# cpuset.cpus cannot be a subset of sibling cpuset.cpus.exclusive
441 #	      rtest (cpuset.cpus.exclusive=1-7)
451 # Only CPUs 1-7 should be used.
472 	# p1 as member, will get its effective CPUs from its parent rtest
529 		PFILE=$CGRP/cpuset.cpus.partition
530 		CFILE=$CGRP/cpuset.cpus
531 		XFILE=$CGRP/cpuset.cpus.exclusive
538 			CPUS=${CMD#?}
539 			COMM="echo $CPUS > $XFILE"
543 			CPUS=${CMD#??}
544 			COMM="echo $CPUS > $CFILE; echo $CPUS > $XFILE"
547 		    C*) CPUS=${CMD#?}
548 			COMM="echo $CPUS > $CFILE"
627 		CPUS=$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 $CPUS)"
660 # Check effective cpus
675 			FILE=cpuset.cpus.exclusive.effective
677 			FILE=cpuset.cpus.effective
703 			P*) FILE=$CGRP_DIR/cpuset.cpus.partition
733 			DOMS=$(cat $CGRP_DIR/cpuset.cpus.effective)
742 # Get isolated (including offline) CPUs by looking at
743 # /sys/kernel/debug/sched/domains and cpuset.cpus.isolated control file,
746 # Note that isolated CPUs from the sched/domains context include offline
747 # CPUs as well as CPUs in non-isolated 1-CPU partition. Those CPUs may
748 # not be included in the cpuset.cpus.isolated control file which contains
749 # only CPUs in isolated partitions as well as those that are isolated at
754 # <isolcpus2> - cpuset.cpus.isolated value = <isolcpus1> if not defined
759 	ISCPUS=${CGROUP2}/cpuset.cpus.isolated
777 	# Appending pre-isolated CPUs
779 	# to make appending those CPUs easier.
787 	# Check cpuset.cpus.isolated cpumask
799 	# Use the sched domain in debugfs to check isolated CPUs, if available
847 # Check to see if there are unexpected isolated CPUs left beyond the boot
862 	echo "Unexpected isolated CPUs: $ISOLCPUS"
872 #  $4 - Expected isolated CPUs
893 	# Compare the expected isolated CPUs with the actual ones,
907 	_NEWLIST=$(cat $CGROUP2/cpuset.cpus.effective)
914 		_NEWLIST=$(cat $CGROUP2/cpuset.cpus.effective)
917 		echo "Effective cpus changed to $_NEWLIST after test $_NR!"
995 	echo "1-7" > cpuset.cpus
996 	echo "1-7" > cpuset.cpus.exclusive
1060 	echo 2-3 > cpuset.cpus
1061 	TYPE=$(cat cpuset.cpus.partition)
1062 	[[ $TYPE = member ]] || echo member > cpuset.cpus.partition
1085 	console_msg "Distribute all cpus to child partition"
1091 	echo 2-3 > cpuset.cpus
1105 	echo 2 > cpuset.cpus
1109 	echo 2-3 > cpuset.cpus
1150 	echo 1 > cpuset.cpus
1152 	echo root > cpuset.cpus.partition
1155 	wait_inotify $PWD/cpuset.cpus.partition $PRS &
1176 	echo member > cpuset.cpus.partition
1184 	echo member > cpuset.cpus.partition
1185 	echo "" > cpuset.cpus