The test_core will skip the test_cgcore_no_internal_process_constraint_on_threads test case if the 'cpu' controller missing in root's subtree_control. In fact we need to set the 'cpu' in subtree_control, to make the testing meaningful.

./test_core ... ok 4 # skip test_cgcore_no_internal_process_constraint_on_threads ...

Signed-off-by: Alex Shi alex.shi@linux.alibaba.com Cc: Shuah Khan shuah@kernel.org Cc: Tejun Heo tj@kernel.org Cc: Roman Gushchin guro@fb.com Cc: Claudio Zumbo claudioz@fb.com Cc: Claudio claudiozumbo@gmail.com Cc: linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Roman Gushchin guro@fb.com --- tools/testing/selftests/cgroup/test_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/cgroup/test_core.c b/tools/testing/selftests/cgroup/test_core.c index b1a570d7c557..2ffc3e07d98d 100644 --- a/tools/testing/selftests/cgroup/test_core.c +++ b/tools/testing/selftests/cgroup/test_core.c @@ -198,7 +198,7 @@ static int test_cgcore_no_internal_process_constraint_on_threads(const char *roo char *parent = NULL, *child = NULL;

if (cg_read_strstr(root, "cgroup.controllers", "cpu") || - cg_read_strstr(root, "cgroup.subtree_control", "cpu")) { + cg_write(root, "cgroup.subtree_control", "+cpu")) { ret = KSFT_SKIP; goto cleanup; }