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Message-Id: <20230905133243.91107-8-longman@redhat.com>
Date:   Tue,  5 Sep 2023 09:32:43 -0400
From:   Waiman Long <longman@...hat.com>
To:     Tejun Heo <tj@...nel.org>, Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Christian Brauner <brauner@...nel.org>,
        Jonathan Corbet <corbet@....net>, Shuah Khan <shuah@...nel.org>
Cc:     cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        Juri Lelli <juri.lelli@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Michal Koutný <mkoutny@...e.com>,
        Giuseppe Scrivano <gscrivan@...hat.com>,
        Waiman Long <longman@...hat.com>
Subject: [PATCH v8 7/7] cgroup/cpuset: Extend test_cpuset_prs.sh to test remote partition

This patch extends the test_cpuset_prs.sh test script to support testing
the new remote partition type and the new "cpuset.cpus.exclusive" and
"cpuset.cpus.exclusive.effective" control files by adding new tests
for them. In addition, the following changes are also made:

 1) Run the state transition tests directly under root to ease testing
    of remote partition and remove the unneeded test column.
 2) Add a column to for the list of expected isolated CPUs and compare
    it with the actual value by looking at the state of
    /sys/kernel/debug/sched/domains which will be available if the
    verbose flag is set.

Signed-off-by: Waiman Long <longman@...hat.com>
---
 .../selftests/cgroup/test_cpuset_prs.sh       | 458 ++++++++++++------
 1 file changed, 317 insertions(+), 141 deletions(-)

diff --git a/tools/testing/selftests/cgroup/test_cpuset_prs.sh b/tools/testing/selftests/cgroup/test_cpuset_prs.sh
index 4afb132e4e4f..0f4f4a57ae12 100755
--- a/tools/testing/selftests/cgroup/test_cpuset_prs.sh
+++ b/tools/testing/selftests/cgroup/test_cpuset_prs.sh
@@ -3,7 +3,7 @@
 #
 # Test for cpuset v2 partition root state (PRS)
 #
-# The sched verbose flag is set, if available, so that the console log
+# The sched verbose flag can be optionally set so that the console log
 # can be examined for the correct setting of scheduling domain.
 #
 
@@ -22,27 +22,27 @@ WAIT_INOTIFY=$(cd $(dirname $0); pwd)/wait_inotify
 # Find cgroup v2 mount point
 CGROUP2=$(mount -t cgroup2 | head -1 | awk -e '{print $3}')
 [[ -n "$CGROUP2" ]] || skip_test "Cgroup v2 mount point not found!"
+SUBPARTS_CPUS=$CGROUP2/.__DEBUG__.cpuset.cpus.subpartitions
+CPULIST=$(cat $CGROUP2/cpuset.cpus.effective)
 
-CPUS=$(lscpu | grep "^CPU(s):" | sed -e "s/.*:[[:space:]]*//")
-[[ $CPUS -lt 8 ]] && skip_test "Test needs at least 8 cpus available!"
+NR_CPUS=$(lscpu | grep "^CPU(s):" | sed -e "s/.*:[[:space:]]*//")
+[[ $NR_CPUS -lt 8 ]] && skip_test "Test needs at least 8 cpus available!"
 
 # Set verbose flag and delay factor
 PROG=$1
-VERBOSE=
+VERBOSE=0
 DELAY_FACTOR=1
 SCHED_DEBUG=
 while [[ "$1" = -* ]]
 do
 	case "$1" in
-		-v) VERBOSE=1
+		-v) ((VERBOSE++))
 		    # Enable sched/verbose can slow thing down
 		    [[ $DELAY_FACTOR -eq 1 ]] &&
 			DELAY_FACTOR=2
-		    break
 		    ;;
 		-d) DELAY_FACTOR=$2
 		    shift
-		    break
 		    ;;
 		*)  echo "Usage: $PROG [-v] [-d <delay-factor>"
 		    exit
@@ -52,7 +52,7 @@ do
 done
 
 # Set sched verbose flag if available when "-v" option is specified
-if [[ -n "$VERBOSE" && -d /sys/kernel/debug/sched ]]
+if [[ $VERBOSE -gt 0 && -d /sys/kernel/debug/sched ]]
 then
 	# Used to restore the original setting during cleanup
 	SCHED_DEBUG=$(cat /sys/kernel/debug/sched/verbose)
@@ -61,14 +61,26 @@ fi
 
 cd $CGROUP2
 echo +cpuset > cgroup.subtree_control
+
+#
+# If cpuset has been set up and used in child cgroups, we may not be able to
+# create partition under root cgroup because of the CPU exclusivity rule.
+# So we are going to skip the test if this is the case.
+#
 [[ -d test ]] || mkdir test
-cd test
+echo 0-6 > test/cpuset.cpus
+echo root > test/cpuset.cpus.partition
+cat test/cpuset.cpus.partition | grep -q invalid
+RESULT=$?
+echo member > test/cpuset.cpus.partition
+echo "" > test/cpuset.cpus
+[[ $RESULT -eq 0 ]] && skip_test "Child cgroups are using cpuset!"
 
 cleanup()
 {
 	online_cpus
+	cd $CGROUP2
 	rmdir A1/A2/A3 A1/A2 A1 B1 > /dev/null 2>&1
-	cd ..
 	rmdir test > /dev/null 2>&1
 	[[ -n "$SCHED_DEBUG" ]] &&
 		echo "$SCHED_DEBUG" > /sys/kernel/debug/sched/verbose
@@ -103,7 +115,7 @@ test_partition()
 	[[ $? -eq 0 ]] || exit 1
 	ACTUAL_VAL=$(cat cpuset.cpus.partition)
 	[[ $ACTUAL_VAL != $EXPECTED_VAL ]] && {
-		echo "cpuset.cpus.partition: expect $EXPECTED_VAL, found $EXPECTED_VAL"
+		echo "cpuset.cpus.partition: expect $EXPECTED_VAL, found $ACTUAL_VAL"
 		echo "Test FAILED"
 		exit 1
 	}
@@ -114,7 +126,7 @@ test_effective_cpus()
 	EXPECTED_VAL=$1
 	ACTUAL_VAL=$(cat cpuset.cpus.effective)
 	[[ "$ACTUAL_VAL" != "$EXPECTED_VAL" ]] && {
-		echo "cpuset.cpus.effective: expect '$EXPECTED_VAL', found '$EXPECTED_VAL'"
+		echo "cpuset.cpus.effective: expect '$EXPECTED_VAL', found '$ACTUAL_VAL'"
 		echo "Test FAILED"
 		exit 1
 	}
@@ -139,6 +151,7 @@ test_add_proc()
 #
 test_isolated()
 {
+	cd $CGROUP2/test
 	echo 2-3 > cpuset.cpus
 	TYPE=$(cat cpuset.cpus.partition)
 	[[ $TYPE = member ]] || echo member > cpuset.cpus.partition
@@ -203,125 +216,213 @@ test_isolated()
 #
 # Cgroup test hierarchy
 #
-# test -- A1 -- A2 -- A3
-#      \- B1
+# root -- A1 -- A2 -- A3
+#      +- B1
 #
-#  P<v> = set cpus.partition (0:member, 1:root, 2:isolated, -1:root invalid)
+#  P<v> = set cpus.partition (0:member, 1:root, 2:isolated)
 #  C<l> = add cpu-list
 #  S<p> = use prefix in subtree_control
 #  T    = put a task into cgroup
-#  O<c>-<v> = Write <v> to CPU online file of <c>
+#  O<c>=<v> = Write <v> to CPU online file of <c>
 #
 SETUP_A123_PARTITIONS="C1-3:P1:S+ C2-3:P1:S+ C3:P1"
 TEST_MATRIX=(
-	# test  old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate
-	# ----  ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------
-	"  S+    C0-1     .      .    C2-3    S+    C4-5     .      .     0 A2:0-1"
-	"  S+    C0-1     .      .    C2-3    P1      .      .      .     0 "
-	"  S+    C0-1     .      .    C2-3   P1:S+ C0-1:P1   .      .     0 "
-	"  S+    C0-1     .      .    C2-3   P1:S+  C1:P1    .      .     0 "
-	"  S+   C0-1:S+   .      .    C2-3     .      .      .     P1     0 "
-	"  S+   C0-1:P1   .      .    C2-3    S+     C1      .      .     0 "
-	"  S+   C0-1:P1   .      .    C2-3    S+    C1:P1    .      .     0 "
-	"  S+   C0-1:P1   .      .    C2-3    S+    C1:P1    .     P1     0 "
-	"  S+   C0-1:P1   .      .    C2-3   C4-5     .      .      .     0 A1:4-5"
-	"  S+   C0-1:P1   .      .    C2-3  S+:C4-5   .      .      .     0 A1:4-5"
-	"  S+    C0-1     .      .   C2-3:P1   .      .      .     C2     0 "
-	"  S+    C0-1     .      .   C2-3:P1   .      .      .    C4-5    0 B1:4-5"
-	"  S+ C0-3:P1:S+ C2-3:P1 .      .      .      .      .      .     0 A1:0-1,A2:2-3"
-	"  S+ C0-3:P1:S+ C2-3:P1 .      .     C1-3    .      .      .     0 A1:1,A2:2-3"
-	"  S+ C2-3:P1:S+  C3:P1  .      .     C3      .      .      .     0 A1:,A2:3 A1:P1,A2:P1"
-	"  S+ C2-3:P1:S+  C3:P1  .      .     C3      P0     .      .     0 A1:3,A2:3 A1:P1,A2:P0"
-	"  S+ C2-3:P1:S+  C2:P1  .      .     C2-4    .      .      .     0 A1:3-4,A2:2"
-	"  S+ C2-3:P1:S+  C3:P1  .      .     C3      .      .     C0-2   0 A1:,B1:0-2 A1:P1,A2:P1"
-	"  S+ $SETUP_A123_PARTITIONS    .     C2-3    .      .      .     0 A1:,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
+	#  old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate ISOLCPUS
+	#  ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------ --------
+	"   C0-1     .      .    C2-3    S+    C4-5     .      .     0 A2:0-1"
+	"   C0-1     .      .    C2-3    P1      .      .      .     0 "
+	"   C0-1     .      .    C2-3   P1:S+ C0-1:P1   .      .     0 "
+	"   C0-1     .      .    C2-3   P1:S+  C1:P1    .      .     0 "
+	"  C0-1:S+   .      .    C2-3     .      .      .     P1     0 "
+	"  C0-1:P1   .      .    C2-3    S+     C1      .      .     0 "
+	"  C0-1:P1   .      .    C2-3    S+    C1:P1    .      .     0 "
+	"  C0-1:P1   .      .    C2-3    S+    C1:P1    .     P1     0 "
+	"  C0-1:P1   .      .    C2-3   C4-5     .      .      .     0 A1:4-5"
+	"  C0-1:P1   .      .    C2-3  S+:C4-5   .      .      .     0 A1:4-5"
+	"   C0-1     .      .   C2-3:P1   .      .      .     C2     0 "
+	"   C0-1     .      .   C2-3:P1   .      .      .    C4-5    0 B1:4-5"
+	"C0-3:P1:S+ C2-3:P1 .      .      .      .      .      .     0 A1:0-1,A2:2-3"
+	"C0-3:P1:S+ C2-3:P1 .      .     C1-3    .      .      .     0 A1:1,A2:2-3"
+	"C2-3:P1:S+  C3:P1  .      .     C3      .      .      .     0 A1:,A2:3 A1:P1,A2:P1"
+	"C2-3:P1:S+  C3:P1  .      .     C3      P0     .      .     0 A1:3,A2:3 A1:P1,A2:P0"
+	"C2-3:P1:S+  C2:P1  .      .     C2-4    .      .      .     0 A1:3-4,A2:2"
+	"C2-3:P1:S+  C3:P1  .      .     C3      .      .     C0-2   0 A1:,B1:0-2 A1:P1,A2:P1"
+	"$SETUP_A123_PARTITIONS    .     C2-3    .      .      .     0 A1:,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
 
 	# CPU offlining cases:
-	"  S+    C0-1     .      .    C2-3    S+    C4-5     .     O2-0   0 A1:0-1,B1:3"
-	"  S+ C0-3:P1:S+ C2-3:P1 .      .     O2-0    .      .      .     0 A1:0-1,A2:3"
-	"  S+ C0-3:P1:S+ C2-3:P1 .      .     O2-0   O2-1    .      .     0 A1:0-1,A2:2-3"
-	"  S+ C0-3:P1:S+ C2-3:P1 .      .     O1-0    .      .      .     0 A1:0,A2:2-3"
-	"  S+ C0-3:P1:S+ C2-3:P1 .      .     O1-0   O1-1    .      .     0 A1:0-1,A2:2-3"
-	"  S+ C2-3:P1:S+  C3:P1  .      .     O3-0   O3-1    .      .     0 A1:2,A2:3 A1:P1,A2:P1"
-	"  S+ C2-3:P1:S+  C3:P2  .      .     O3-0   O3-1    .      .     0 A1:2,A2:3 A1:P1,A2:P2"
-	"  S+ C2-3:P1:S+  C3:P1  .      .     O2-0   O2-1    .      .     0 A1:2,A2:3 A1:P1,A2:P1"
-	"  S+ C2-3:P1:S+  C3:P2  .      .     O2-0   O2-1    .      .     0 A1:2,A2:3 A1:P1,A2:P2"
-	"  S+ C2-3:P1:S+  C3:P1  .      .     O2-0    .      .      .     0 A1:,A2:3 A1:P1,A2:P1"
-	"  S+ C2-3:P1:S+  C3:P1  .      .     O3-0    .      .      .     0 A1:2,A2: A1:P1,A2:P1"
-	"  S+ C2-3:P1:S+  C3:P1  .      .    T:O2-0   .      .      .     0 A1:3,A2:3 A1:P1,A2:P-1"
-	"  S+ C2-3:P1:S+  C3:P1  .      .      .    T:O3-0   .      .     0 A1:2,A2:2 A1:P1,A2:P-1"
-	"  S+ $SETUP_A123_PARTITIONS    .     O1-0    .      .      .     0 A1:,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
-	"  S+ $SETUP_A123_PARTITIONS    .     O2-0    .      .      .     0 A1:1,A2:,A3:3 A1:P1,A2:P1,A3:P1"
-	"  S+ $SETUP_A123_PARTITIONS    .     O3-0    .      .      .     0 A1:1,A2:2,A3: A1:P1,A2:P1,A3:P1"
-	"  S+ $SETUP_A123_PARTITIONS    .    T:O1-0   .      .      .     0 A1:2-3,A2:2-3,A3:3 A1:P1,A2:P-1,A3:P-1"
-	"  S+ $SETUP_A123_PARTITIONS    .      .    T:O2-0   .      .     0 A1:1,A2:3,A3:3 A1:P1,A2:P1,A3:P-1"
-	"  S+ $SETUP_A123_PARTITIONS    .      .      .    T:O3-0   .     0 A1:1,A2:2,A3:2 A1:P1,A2:P1,A3:P-1"
-	"  S+ $SETUP_A123_PARTITIONS    .    T:O1-0  O1-1    .      .     0 A1:1,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
-	"  S+ $SETUP_A123_PARTITIONS    .      .    T:O2-0  O2-1    .     0 A1:1,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
-	"  S+ $SETUP_A123_PARTITIONS    .      .      .    T:O3-0  O3-1   0 A1:1,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
-	"  S+ $SETUP_A123_PARTITIONS    .    T:O1-0  O2-0   O1-1    .     0 A1:1,A2:,A3:3 A1:P1,A2:P1,A3:P1"
-	"  S+ $SETUP_A123_PARTITIONS    .    T:O1-0  O2-0   O2-1    .     0 A1:2-3,A2:2-3,A3:3 A1:P1,A2:P-1,A3:P-1"
-
-	# test  old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate
-	# ----  ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------
+	"   C0-1     .      .    C2-3    S+    C4-5     .     O2=0   0 A1:0-1,B1:3"
+	"C0-3:P1:S+ C2-3:P1 .      .     O2=0    .      .      .     0 A1:0-1,A2:3"
+	"C0-3:P1:S+ C2-3:P1 .      .     O2=0   O2=1    .      .     0 A1:0-1,A2:2-3"
+	"C0-3:P1:S+ C2-3:P1 .      .     O1=0    .      .      .     0 A1:0,A2:2-3"
+	"C0-3:P1:S+ C2-3:P1 .      .     O1=0   O1=1    .      .     0 A1:0-1,A2:2-3"
+	"C2-3:P1:S+  C3:P1  .      .     O3=0   O3=1    .      .     0 A1:2,A2:3 A1:P1,A2:P1"
+	"C2-3:P1:S+  C3:P2  .      .     O3=0   O3=1    .      .     0 A1:2,A2:3 A1:P1,A2:P2"
+	"C2-3:P1:S+  C3:P1  .      .     O2=0   O2=1    .      .     0 A1:2,A2:3 A1:P1,A2:P1"
+	"C2-3:P1:S+  C3:P2  .      .     O2=0   O2=1    .      .     0 A1:2,A2:3 A1:P1,A2:P2"
+	"C2-3:P1:S+  C3:P1  .      .     O2=0    .      .      .     0 A1:,A2:3 A1:P1,A2:P1"
+	"C2-3:P1:S+  C3:P1  .      .     O3=0    .      .      .     0 A1:2,A2: A1:P1,A2:P1"
+	"C2-3:P1:S+  C3:P1  .      .    T:O2=0   .      .      .     0 A1:3,A2:3 A1:P1,A2:P-1"
+	"C2-3:P1:S+  C3:P1  .      .      .    T:O3=0   .      .     0 A1:2,A2:2 A1:P1,A2:P-1"
+	"$SETUP_A123_PARTITIONS    .     O1=0    .      .      .     0 A1:,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
+	"$SETUP_A123_PARTITIONS    .     O2=0    .      .      .     0 A1:1,A2:,A3:3 A1:P1,A2:P1,A3:P1"
+	"$SETUP_A123_PARTITIONS    .     O3=0    .      .      .     0 A1:1,A2:2,A3: A1:P1,A2:P1,A3:P1"
+	"$SETUP_A123_PARTITIONS    .    T:O1=0   .      .      .     0 A1:2-3,A2:2-3,A3:3 A1:P1,A2:P-1,A3:P-1"
+	"$SETUP_A123_PARTITIONS    .      .    T:O2=0   .      .     0 A1:1,A2:3,A3:3 A1:P1,A2:P1,A3:P-1"
+	"$SETUP_A123_PARTITIONS    .      .      .    T:O3=0   .     0 A1:1,A2:2,A3:2 A1:P1,A2:P1,A3:P-1"
+	"$SETUP_A123_PARTITIONS    .    T:O1=0  O1=1    .      .     0 A1:1,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
+	"$SETUP_A123_PARTITIONS    .      .    T:O2=0  O2=1    .     0 A1:1,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
+	"$SETUP_A123_PARTITIONS    .      .      .    T:O3=0  O3=1   0 A1:1,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
+	"$SETUP_A123_PARTITIONS    .    T:O1=0  O2=0   O1=1    .     0 A1:1,A2:,A3:3 A1:P1,A2:P1,A3:P1"
+	"$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"
+
+	#  old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate ISOLCPUS
+	#  ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------ --------
+	#
+	# Remote partition and cpuset.cpus.exclusive tests
+	#
+	" C0-3:S+ C1-3:S+ C2-3     .    X2-3     .      .      .     0 A1:0-3,A2:1-3,A3:2-3,XA1:2-3"
+	" 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"
+	" 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"
+	" 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"
+	" C0-3:S+ C1-3:S+ C2-3     .    X2-3   X2-3 X2-3:P2:C3 .     0 A1:0-2,A2:1-2,A3:3 A1:P0,A3:P2 3"
+	" 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"
+	" C0-3:S+ C1-3:S+ C2-3   C4-5     .      .      .      P2    0 B1:4-5 B1:P2 4-5"
+	" 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"
+	" 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"
+	" 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"
+	" 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"
+
+	# Nested remote/local partition tests
+	" 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 \
+								       A1:P0,A2:P1,A3:P2,B1:P1 2-3"
+	" 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 \
+								       A1:P0,A2:P1,A3:P2,B1:P1 2-4"
+	" 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 \
+								       A1:P0,A2:P1,A3:P2,B1:P1 2-4"
+	" C0-4:S+ C1-4:S+ C2-4     .    X2-4  X2-4:P2  X4:P1    .    0 A1:0-1,A2:2-3,A3:4 \
+								       A1:P0,A2:P2,A3:P1 2-4"
+	" C0-4:X2-4:S+ C1-4:X2-4:S+:P2 C2-4:X4:P1 \
+				   .      .      X5      .      .    0 A1:0-4,A2:1-4,A3:2-4 \
+								       A1:P0,A2:P-2,A3:P-1 ."
+	" C0-4:X2-4:S+ C1-4:X2-4:S+:P2 C2-4:X4:P1 \
+				   .      .      .      X1      .    0 A1:0-1,A2:2-4,A3:2-4 \
+								       A1:P0,A2:P2,A3:P-1 2-4"
+
+	# Remote partition offline tests
+	" 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"
+	" 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"
+	" 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"
+	" 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"
+
+	# An invalidated remote partition cannot self-recover from hotplug
+	" 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"
+
+	# cpus.exclusive.effective clearing test
+	" C0-3:S+ C1-3:S+  C2      .   X2-3:X    .      .      .      0 A1:0-3,A2:1-3,A3:2,XA1:"
+
+	# Invalid to valid remote partition indirect transition test via member
+	" C0-3:S+   C1-3    .      .      .    X3:P2    .      .      0 A1:0-3,A2:1-3,XA2: A2:P-2"
+	" C0-3:S+ C1-3:X3:P2
+			    .      .    X2-3   P0:P2    .      .      0 A1:0-2,A2:3,XA2:3 A2:P2 3"
+
+	# Invalid to valid local partition direct transition tests
+	" C1-3:S+:P2 C2-3:X1:P2 .  .      .      .      .      .      0 A1:1-3,XA1:1-3,A2:2-3:XA2: A1:P2,A2:P-2 1-3"
+	" C1-3:S+:P2 C2-3:X1:P2 .  .      .    X3:P2    .      .      0 A1:1-2,XA1:1-3,A2:3:XA2:3 A1:P2,A2:P2 1-3"
+
+	# Local partition invalidation tests
+	" C0-3:X1-3:S+:P2 C1-3:X2-3:S+:P2 C2-3:X3:P2 \
+				   .      .      .      .      .     0 A1:1,A2:2,A3:3 A1:P2,A2:P2,A3:P2 1-3"
+	" C0-3:X1-3:S+:P2 C1-3:X2-3:S+:P2 C2-3:X3:P2 \
+				   .      .     X4      .      .     0 A1:1-3,A2:1-3,A3:2-3,XA2:,XA3: A1:P2,A2:P-2,A3:P-2 1-3"
+	" C0-3:X1-3:S+:P2 C1-3:X2-3:S+:P2 C2-3:X3:P2 \
+				   .      .     C4      .      .     0 A1:1-3,A2:1-3,A3:2-3,XA2:,XA3: A1:P2,A2:P-2,A3:P-2 1-3"
+
+	# cpus_allowed/exclusive_cpus update tests
+	" C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3 \
+				   .     C4      .      P2     .     0 A1:4,A2:4,XA2:,XA3:,A3:4 \
+								       A1:P0,A3:P-2 ."
+	" C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3 \
+				   .     X1      .      P2     .     0 A1:0-3,A2:1-3,XA1:1,XA2:,XA3:,A3:2-3 \
+								       A1:P0,A3:P-2 ."
+	" C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3 \
+				   .      .     C3      P2     .     0 A1:0-2,A2:0-2,XA2:3,XA3:3,A3:3 \
+								       A1:P0,A3:P2 3"
+	" C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3 \
+				   .      .     X3      P2     .     0 A1:0-2,A2:1-2,XA2:3,XA3:3,A3:3 \
+								       A1:P0,A3:P2 3"
+	" C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3:P2 \
+				   .      .     X3      .      .     0 A1:0-3,A2:1-3,XA2:3,XA3:3,A3:2-3 \
+								       A1:P0,A3:P-2 ."
+	" C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3:P2 \
+				   .      .     C3      .      .     0 A1:0-3,A2:3,XA2:3,XA3:3,A3:3 \
+								       A1:P0,A3:P-2 ."
+	" C0-3:X2-3:S+ C1-3:X2-3:S+ C2-3:X2-3:P2 \
+				   .     C4      .      .      .     0 A1:4,A2:4,A3:4,XA1:,XA2:,XA3 \
+								       A1:P0,A3:P-2 ."
+
+	#  old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate ISOLCPUS
+	#  ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------ --------
 	#
 	# Incorrect change to cpuset.cpus invalidates partition root
 	#
 	# Adding CPUs to partition root that are not in parent's
 	# cpuset.cpus is allowed, but those extra CPUs are ignored.
-	"  S+ C2-3:P1:S+ C3:P1   .      .      .     C2-4    .      .     0 A1:,A2:2-3 A1:P1,A2:P1"
+	"C2-3:P1:S+ C3:P1   .      .      .     C2-4    .      .     0 A1:,A2:2-3 A1:P1,A2:P1"
 
 	# Taking away all CPUs from parent or itself if there are tasks
 	# will make the partition invalid.
-	"  S+ C2-3:P1:S+  C3:P1  .      .      T     C2-3    .      .     0 A1:2-3,A2:2-3 A1:P1,A2:P-1"
-	"  S+  C3:P1:S+    C3    .      .      T      P1     .      .     0 A1:3,A2:3 A1:P1,A2:P-1"
-	"  S+ $SETUP_A123_PARTITIONS    .    T:C2-3   .      .      .     0 A1:2-3,A2:2-3,A3:3 A1:P1,A2:P-1,A3:P-1"
-	"  S+ $SETUP_A123_PARTITIONS    . T:C2-3:C1-3 .      .      .     0 A1:1,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
+	"C2-3:P1:S+  C3:P1  .      .      T     C2-3    .      .     0 A1:2-3,A2:2-3 A1:P1,A2:P-1"
+	" C3:P1:S+    C3    .      .      T      P1     .      .     0 A1:3,A2:3 A1:P1,A2:P-1"
+	"$SETUP_A123_PARTITIONS    .    T:C2-3   .      .      .     0 A1:2-3,A2:2-3,A3:3 A1:P1,A2:P-1,A3:P-1"
+	"$SETUP_A123_PARTITIONS    . T:C2-3:C1-3 .      .      .     0 A1:1,A2:2,A3:3 A1:P1,A2:P1,A3:P1"
 
 	# Changing a partition root to member makes child partitions invalid
-	"  S+ C2-3:P1:S+  C3:P1  .      .      P0     .      .      .     0 A1:2-3,A2:3 A1:P0,A2:P-1"
-	"  S+ $SETUP_A123_PARTITIONS    .     C2-3    P0     .      .     0 A1:2-3,A2:2-3,A3:3 A1:P1,A2:P0,A3:P-1"
+	"C2-3:P1:S+  C3:P1  .      .      P0     .      .      .     0 A1:2-3,A2:3 A1:P0,A2:P-1"
+	"$SETUP_A123_PARTITIONS    .     C2-3    P0     .      .     0 A1:2-3,A2:2-3,A3:3 A1:P1,A2:P0,A3:P-1"
 
 	# cpuset.cpus can contains cpus not in parent's cpuset.cpus as long
 	# as they overlap.
-	"  S+ C2-3:P1:S+  .      .      .      .   C3-4:P1   .      .     0 A1:2,A2:3 A1:P1,A2:P1"
+	"C2-3:P1:S+  .      .      .      .   C3-4:P1   .      .     0 A1:2,A2:3 A1:P1,A2:P1"
 
 	# Deletion of CPUs distributed to child cgroup is allowed.
-	"  S+ C0-1:P1:S+ C1      .    C2-3   C4-5     .      .      .     0 A1:4-5,A2:4-5"
+	"C0-1:P1:S+ C1      .    C2-3   C4-5     .      .      .     0 A1:4-5,A2:4-5"
 
 	# To become a valid partition root, cpuset.cpus must overlap parent's
 	# cpuset.cpus.
-	"  S+   C0-1:P1   .      .    C2-3    S+   C4-5:P1   .      .     0 A1:0-1,A2:0-1 A1:P1,A2:P-1"
+	"  C0-1:P1   .      .    C2-3    S+   C4-5:P1   .      .     0 A1:0-1,A2:0-1 A1:P1,A2:P-1"
 
 	# Enabling partition with child cpusets is allowed
-	"  S+   C0-1:S+  C1      .    C2-3    P1      .      .      .     0 A1:0-1,A2:1 A1:P1"
+	"  C0-1:S+  C1      .    C2-3    P1      .      .      .     0 A1:0-1,A2:1 A1:P1"
 
 	# A partition root with non-partition root parent is invalid, but it
 	# can be made valid if its parent becomes a partition root too.
-	"  S+   C0-1:S+  C1      .    C2-3     .      P2     .      .     0 A1:0-1,A2:1 A1:P0,A2:P-2"
-	"  S+   C0-1:S+ C1:P2    .    C2-3     P1     .      .      .     0 A1:0,A2:1 A1:P1,A2:P2"
+	"  C0-1:S+  C1      .    C2-3     .      P2     .      .     0 A1:0-1,A2:1 A1:P0,A2:P-2"
+	"  C0-1:S+ C1:P2    .    C2-3     P1     .      .      .     0 A1:0,A2:1 A1:P1,A2:P2"
 
 	# A non-exclusive cpuset.cpus change will invalidate partition and its siblings
-	"  S+   C0-1:P1   .      .    C2-3   C0-2     .      .      .     0 A1:0-2,B1:2-3 A1:P-1,B1:P0"
-	"  S+   C0-1:P1   .      .  P1:C2-3  C0-2   .      .      .     0 A1:0-2,B1:2-3 A1:P-1,B1:P-1"
-	"  S+    C0-1     .      .  P1:C2-3  C0-2   .      .      .     0 A1:0-2,B1:2-3 A1:P0,B1:P-1"
+	"  C0-1:P1   .      .    C2-3   C0-2     .      .      .     0 A1:0-2,B1:2-3 A1:P-1,B1:P0"
+	"  C0-1:P1   .      .  P1:C2-3  C0-2     .      .      .     0 A1:0-2,B1:2-3 A1:P-1,B1:P-1"
+	"   C0-1     .      .  P1:C2-3  C0-2     .      .      .     0 A1:0-2,B1:2-3 A1:P0,B1:P-1"
 
-	# test  old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate
-	# ----  ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------
+	#  old-A1 old-A2 old-A3 old-B1 new-A1 new-A2 new-A3 new-B1 fail ECPUs Pstate ISOLCPUS
+	#  ------ ------ ------ ------ ------ ------ ------ ------ ---- ----- ------ --------
 	# Failure cases:
 
 	# A task cannot be added to a partition with no cpu
-	"  S+ C2-3:P1:S+  C3:P1  .      .    O2-0:T   .      .      .     1 A1:,A2:3 A1:P1,A2:P1"
+	"C2-3:P1:S+  C3:P1  .      .    O2=0:T   .      .      .     1 A1:,A2:3 A1:P1,A2:P1"
+
+	# Changes to cpuset.cpus.exclusive that violate exclusivity rule is rejected
+	"   C0-3     .      .    C4-5   X0-3     .      .     X3-5   1 A1:0-3,B1:4-5"
 )
 
 #
 # Write to the cpu online file
-#  $1 - <c>-<v> where <c> = cpu number, <v> value to be written
+#  $1 - <c>=<v> where <c> = cpu number, <v> value to be written
 #
 write_cpu_online()
 {
-	CPU=${1%-*}
-	VAL=${1#*-}
+	CPU=${1%=*}
+	VAL=${1#*=}
 	CPUFILE=//sys/devices/system/cpu/cpu${CPU}/online
 	if [[ $VAL -eq 0 ]]
 	then
@@ -349,11 +450,12 @@ set_ctrl_state()
 	TMPMSG=/tmp/.msg_$$
 	CGRP=$1
 	STATE=$2
-	SHOWERR=${3}${VERBOSE}
+	SHOWERR=${3}
 	CTRL=${CTRL:=$CONTROLLER}
 	HASERR=0
 	REDIRECT="2> $TMPMSG"
 	[[ -z "$STATE" || "$STATE" = '.' ]] && return 0
+	[[ $VERBOSE -gt 0 ]] && SHOWERR=1
 
 	rm -f $TMPMSG
 	for CMD in $(echo $STATE | sed -e "s/:/ /g")
@@ -362,12 +464,18 @@ set_ctrl_state()
 		SFILE=$CGRP/cgroup.subtree_control
 		PFILE=$CGRP/cpuset.cpus.partition
 		CFILE=$CGRP/cpuset.cpus
+		XFILE=$CGRP/cpuset.cpus.exclusive
 		S=$(expr substr $CMD 1 1)
 		if [[ $S = S ]]
 		then
 			PREFIX=${CMD#?}
 			COMM="echo ${PREFIX}${CTRL} > $SFILE"
 			eval $COMM $REDIRECT
+		elif [[ $S = X ]]
+		then
+			CPUS=${CMD#?}
+			COMM="echo $CPUS > $XFILE"
+			eval $COMM $REDIRECT
 		elif [[ $S = C ]]
 		then
 			CPUS=${CMD#?}
@@ -430,7 +538,7 @@ online_cpus()
 	[[ -n "OFFLINE_CPUS" ]] && {
 		for C in $OFFLINE_CPUS
 		do
-			write_cpu_online ${C}-1
+			write_cpu_online ${C}=1
 		done
 	}
 }
@@ -443,18 +551,27 @@ reset_cgroup_states()
 	echo 0 > $CGROUP2/cgroup.procs
 	online_cpus
 	rmdir A1/A2/A3 A1/A2 A1 B1 > /dev/null 2>&1
-	set_ctrl_state . S-
+	pause 0.02
+	set_ctrl_state . R-
 	pause 0.01
 }
 
 dump_states()
 {
-	for DIR in A1 A1/A2 A1/A2/A3 B1
+	for DIR in . A1 A1/A2 A1/A2/A3 B1
 	do
+		CPUS=$DIR/cpuset.cpus
 		ECPUS=$DIR/cpuset.cpus.effective
+		XCPUS=$DIR/cpuset.cpus.exclusive
+		XECPUS=$DIR/cpuset.cpus.exclusive.effective
 		PRS=$DIR/cpuset.cpus.partition
-		[[ -e $ECPUS ]] && echo "$ECPUS: $(cat $ECPUS)"
-		[[ -e $PRS   ]] && echo "$PRS: $(cat $PRS)"
+		PCPUS=$DIR/.__DEBUG__.cpuset.cpus.subpartitions
+		[[ -e $CPUS   ]] && echo "$CPUS: $(cat $CPUS)"
+		[[ -e $XCPUS  ]] && echo "$XCPUS: $(cat $XCPUS)"
+		[[ -e $ECPUS  ]] && echo "$ECPUS: $(cat $ECPUS)"
+		[[ -e $XECPUS ]] && echo "$XECPUS: $(cat $XECPUS)"
+		[[ -e $PRS    ]] && echo "$PRS: $(cat $PRS)"
+		[[ -e $PCPUS  ]] && echo "$PCPUS: $(cat $PCPUS)"
 	done
 }
 
@@ -470,11 +587,17 @@ check_effective_cpus()
 		set -- $(echo $CHK | sed -e "s/:/ /g")
 		CGRP=$1
 		CPUS=$2
+		if [[ $CGRP = X* ]]
+		then
+			CGRP=${CGRP#X}
+			FILE=cpuset.cpus.exclusive.effective
+		else
+			FILE=cpuset.cpus.effective
+		fi
 		[[ $CGRP = A2 ]] && CGRP=A1/A2
 		[[ $CGRP = A3 ]] && CGRP=A1/A2/A3
-		FILE=$CGRP/cpuset.cpus.effective
-		[[ -e $FILE ]] || return 1
-		[[ $CPUS = $(cat $FILE) ]] || return 1
+		[[ -e $CGRP/$FILE ]] || return 1
+		[[ $CPUS = $(cat $CGRP/$FILE) ]] || return 1
 	done
 }
 
@@ -524,6 +647,65 @@ check_cgroup_states()
 	return 0
 }
 
+#
+# Get isolated (including offline) CPUs by looking at
+# /sys/kernel/debug/sched/domains and compare that with the expected value.
+#
+# Note that a sched domain of just 1 CPU will be considered isolated.
+#
+# $1 - expected isolated cpu list
+#
+check_isolcpus()
+{
+	EXPECT_VAL=$1
+	ISOLCPUS=
+	LASTISOLCPU=
+	SCHED_DOMAINS=/sys/kernel/debug/sched/domains
+	[[ -d $SCHED_DOMAINS ]] || return 0
+	[[ $EXPECT_VAL = . ]] && EXPECT_VAL=
+
+	for ((CPU=0; CPU < $NR_CPUS; CPU++))
+	do
+		[[ -n "$(ls ${SCHED_DOMAINS}/cpu$CPU)" ]] && continue
+
+		if [[ -z "$LASTISOLCPU" ]]
+		then
+			ISOLCPUS=$CPU
+			LASTISOLCPU=$CPU
+		elif [[ "$LASTISOLCPU" -eq $((CPU - 1)) ]]
+		then
+			echo $ISOLCPUS | grep -q "\<$LASTISOLCPU\$"
+			if [[ $? -eq 0 ]]
+			then
+				ISOLCPUS=${ISOLCPUS}-
+			fi
+			LASTISOLCPU=$CPU
+		else
+			if [[ $ISOLCPUS = *- ]]
+			then
+				ISOLCPUS=${ISOLCPUS}$LASTISOLCPU
+			fi
+			ISOLCPUS=${ISOLCPUS},$CPU
+			LASTISOLCPU=$CPU
+		fi
+	done
+	[[ "$ISOLCPUS" = *- ]] && ISOLCPUS=${ISOLCPUS}$LASTISOLCPU
+	[[ "$EXPECT_VAL" = "$ISOLCPUS" ]]
+}
+
+test_fail()
+{
+	TESTNUM=$1
+	TESTTYPE=$2
+	ADDINFO=$3
+	echo "Test $TEST[$TESTNUM] failed $TESTTYPE check!"
+	[[ -n "$ADDINFO" ]] && echo "*** $ADDINFO ***"
+	eval echo \${$TEST[$I]}
+	echo
+	dump_states
+	exit 1
+}
+
 #
 # Run cpuset state transition test
 #  $1 - test matrix name
@@ -536,88 +718,83 @@ run_state_test()
 {
 	TEST=$1
 	CONTROLLER=cpuset
-	CPULIST=0-6
 	I=0
 	eval CNT="\${#$TEST[@]}"
 
 	reset_cgroup_states
-	echo $CPULIST > cpuset.cpus
-	echo root > cpuset.cpus.partition
 	console_msg "Running state transition test ..."
 
 	while [[ $I -lt $CNT ]]
 	do
 		echo "Running test $I ..." > /dev/console
+		[[ $VERBOSE -gt 1 ]] && {
+			echo ""
+			eval echo \${$TEST[$I]}
+		}
 		eval set -- "\${$TEST[$I]}"
-		ROOT=$1
-		OLD_A1=$2
-		OLD_A2=$3
-		OLD_A3=$4
-		OLD_B1=$5
-		NEW_A1=$6
-		NEW_A2=$7
-		NEW_A3=$8
-		NEW_B1=$9
-		RESULT=${10}
-		ECPUS=${11}
-		STATES=${12}
-
-		set_ctrl_state_noerr .        $ROOT
+		OLD_A1=$1
+		OLD_A2=$2
+		OLD_A3=$3
+		OLD_B1=$4
+		NEW_A1=$5
+		NEW_A2=$6
+		NEW_A3=$7
+		NEW_B1=$8
+		RESULT=$9
+		ECPUS=${10}
+		STATES=${11}
+		ICPUS=${12}
+
+		set_ctrl_state_noerr B1       $OLD_B1
 		set_ctrl_state_noerr A1       $OLD_A1
 		set_ctrl_state_noerr A1/A2    $OLD_A2
 		set_ctrl_state_noerr A1/A2/A3 $OLD_A3
-		set_ctrl_state_noerr B1       $OLD_B1
 		RETVAL=0
 		set_ctrl_state A1       $NEW_A1; ((RETVAL += $?))
 		set_ctrl_state A1/A2    $NEW_A2; ((RETVAL += $?))
 		set_ctrl_state A1/A2/A3 $NEW_A3; ((RETVAL += $?))
 		set_ctrl_state B1       $NEW_B1; ((RETVAL += $?))
 
-		[[ $RETVAL -ne $RESULT ]] && {
-			echo "Test $TEST[$I] failed result check!"
-			eval echo \"\${$TEST[$I]}\"
-			dump_states
-			exit 1
-		}
+		[[ $RETVAL -ne $RESULT ]] && test_fail $I result
 
 		[[ -n "$ECPUS" && "$ECPUS" != . ]] && {
 			check_effective_cpus $ECPUS
-			[[ $? -ne 0 ]] && {
-				echo "Test $TEST[$I] failed effective CPU check!"
-				eval echo \"\${$TEST[$I]}\"
-				echo
-				dump_states
-				exit 1
-			}
+			[[ $? -ne 0 ]] && test_fail $I "effective CPU"
 		}
 
-		[[ -n "$STATES" ]] && {
+		[[ -n "$STATES" && "$STATES" != . ]] && {
 			check_cgroup_states $STATES
-			[[ $? -ne 0 ]] && {
-				echo "FAILED: Test $TEST[$I] failed states check!"
-				eval echo \"\${$TEST[$I]}\"
-				echo
-				dump_states
-				exit 1
-			}
+			[[ $? -ne 0 ]] && test_fail $I states
 		}
 
+		# Compare the expected isolated CPUs with the actual ones,
+		# if available
+		[[ -n "$ICPUS" ]] && {
+			check_isolcpus $ICPUS
+			[[ $? -ne 0 ]] && test_fail $I "isolated CPU" \
+				"Expect $ICPUS, get $ISOLCPUS instead"
+		}
 		reset_cgroup_states
 		#
 		# Check to see if effective cpu list changes
 		#
-		pause 0.05
 		NEWLIST=$(cat cpuset.cpus.effective)
+		RETRY=0
+		while [[ $NEWLIST != $CPULIST && $RETRY -lt 5 ]]
+		do
+			# Wait a bit longer & recheck a few times
+			pause 0.01
+			((RETRY++))
+			NEWLIST=$(cat cpuset.cpus.effective)
+		done
 		[[ $NEWLIST != $CPULIST ]] && {
 			echo "Effective cpus changed to $NEWLIST after test $I!"
 			exit 1
 		}
-		[[ -n "$VERBOSE" ]] && echo "Test $I done."
+		[[ $VERBOSE -gt 0 ]] && echo "Test $I done."
 		((I++))
 	done
 	echo "All $I tests of $TEST PASSED."
-
-	echo member > cpuset.cpus.partition
 }
 
 #
@@ -642,6 +819,7 @@ test_inotify()
 {
 	ERR=0
 	PRS=/tmp/.prs_$$
+	cd $CGROUP2/test
 	[[ -f $WAIT_INOTIFY ]] || {
 		echo "wait_inotify not found, inotify test SKIPPED."
 		return
@@ -655,7 +833,7 @@ test_inotify()
 	rm -f $PRS
 	wait_inotify $PWD/cpuset.cpus.partition $PRS &
 	pause 0.01
-	set_ctrl_state . "O1-0"
+	set_ctrl_state . "O1=0"
 	pause 0.01
 	check_cgroup_states ".:P-1"
 	if [[ $? -ne 0 ]]
@@ -689,5 +867,3 @@ run_state_test TEST_MATRIX
 test_isolated
 test_inotify
 echo "All tests PASSED."
-cd ..
-rmdir test
-- 
2.31.1

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