add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/testing/selftests/cgroup/.gitignore
..
..
@@ -1,2 +1,5 @@
1
+# SPDX-License-Identifier: GPL-2.0-only
1
2
 test_memcontrol
2
3
 test_core
4
+test_freezer
5
+test_kmem