Add selftest to test cgroup.freeze and check cgroup.events state.
Signed-off-by: Chen Ridong <chenridong@xxxxxxxxxx>
---
.../testing/selftests/cgroup/test_freezer.sh | 111 ++++++++++++++++++
1 file changed, 111 insertions(+)
create mode 100755 tools/testing/selftests/cgroup/test_freezer.sh
diff --git a/tools/testing/selftests/cgroup/test_freezer.sh b/tools/testing/selftests/cgroup/test_freezer.sh
new file mode 100755
index 000000000000..7178980b1db8
--- /dev/null
+++ b/tools/testing/selftests/cgroup/test_freezer.sh
@@ -0,0 +1,111 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Test freeze hierarchy state
+#
+ROOT_PATH=/sys/fs/cgroup
+skip_test() {
+ echo "$1"
+ echo "Test SKIPPED"
+ exit 4 # ksft_skip
+}
+
+write_freeze() {
+ path=$1
+ value=$2
+ echo $value > $ROOT_PATH/$path/cgroup.freeze
+}
+
+get_event_frozen()
+{
+ path=$1
+ return $(cat $ROOT_PATH/$path/cgroup.events | grep frozen | awk '{print $2}')
+}
+
+# the test subtree:
+# A
+# / \
+# B C
+# / | \ \
+# D E F G
+# /
+# H
+
+PATH_MATRIX=(
+ 'A'
+ 'A/B'
+ 'A/C'
+ 'A/B/D'
+ 'A/B/E'
+ 'A/B/F'
+ 'A/C/G'
+ 'A/B/D/H'
+)
+CGRP_CNT=${#PATH_MATRIX[@]}
+
+# Interface value to set/check
+ITF_MATRIX=(
+ #value write to freeze expect event value
+ #A B C D E F G H | A B C D E F G H
+ '1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1'
+ '1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1'
+ '1 0 1 0 0 0 0 0 1 1 1 1 1 1 1 1'
+ '0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
+
+ '1 1 1 1 0 0 0 0 1 1 1 1 1 1 1 1'
+ '1 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1'
+ '1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1'
+ '1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1'
+
+ '0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1'
+ '0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1'
+ '0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 1'
+ '0 0 1 1 0 0 0 0 0 0 1 1 0 0 1 1'
+ '0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0'
+)
+
+prepare()
+{
+ for i in "${PATH_MATRIX[@]}" ; do
+ path="$ROOT_PATH/$i"
+ mkdir $path
+ done
+}
+
+do_clean()
+{
+ for(( i=$CGRP_CNT-1; i>=0; i-- ));do
+ path="/sys/fs/cgroup/${PATH_MATRIX[i]}"
+ rmdir $path
+ done
+}
+
+run_test()
+{
+ prepare
+ cgrp_cnt="${PATH_MATRIX[@]}"
+ for i in "${ITF_MATRIX[@]}" ; do
+ args=($i)
+ #write freeze
+ for(( j=0; j<$CGRP_CNT; j++ ));do
+ write_freeze "${PATH_MATRIX[j]}" ${args[j]}
+ done
+ #event frozen should eq expected value
+ for(( j=0; j<$CGRP_CNT; j++ ));do
+ get_event_frozen "${PATH_MATRIX[j]}"
+ if [ $? -ne ${args[j + $CGRP_CNT]} ];then
+ echo "failed: $i"
+ do_clean
+ exit 1
+ fi
+ done
+ done
+ do_clean
+}
+
+start_time=$(date +%s%N)
+run_test
+end_time=$(date +%s%N)
+elapsed_time=$((end_time - start_time))
+echo "Test PASSED, elapsed_time:$elapsed_time (ns)"
+exit 0
--
2.34.1
