kernel/linux.git/tools/testing/selftests/cgroup, branch v5.1.16

kselftest/cgroup: fix incorrect test_core skip

2019-06-25T03:34:50+00:00

[ Upstream commit f97f3f8839eb9de5843066d80819884f7722c8c5 ] 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 Cc: Shuah Khan Cc: Tejun Heo Cc: Roman Gushchin Cc: Claudio Zumbo Cc: Claudio Cc: linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Roman Gushchin Acked-by: Tejun Heo Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin

kselftest/cgroup: fix unexpected testing failure on test_core

2019-06-25T03:34:50+00:00

[ Upstream commit 00e38a5d753d7788852f81703db804a60a84c26e ] The cgroup testing relys on the root cgroup's subtree_control setting, If the 'memory' controller isn't set, some test cases will be failed as following: $sudo ./test_core not ok 1 test_cgcore_internal_process_constraint ok 2 test_cgcore_top_down_constraint_enable not ok 3 test_cgcore_top_down_constraint_disable ... To correct this unexpected failure, this patch write the 'memory' to subtree_control of root to get a right result. Signed-off-by: Alex Shi Cc: Shuah Khan Cc: Tejun Heo Cc: Roman Gushchin Cc: Claudio Zumbo Cc: Claudio Cc: linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Roman Gushchin Acked-by: Tejun Heo Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin

kselftest/cgroup: fix unexpected testing failure on test_memcontrol

2019-06-25T03:34:49+00:00

[ Upstream commit f6131f28057d4fd8922599339e701a2504e0f23d ] The cgroup testing relies on the root cgroup's subtree_control setting, If the 'memory' controller isn't set, all test cases will be failed as following: $ sudo ./test_memcontrol not ok 1 test_memcg_subtree_control not ok 2 test_memcg_current ok 3 # skip test_memcg_min not ok 4 test_memcg_low not ok 5 test_memcg_high not ok 6 test_memcg_max not ok 7 test_memcg_oom_events ok 8 # skip test_memcg_swap_max not ok 9 test_memcg_sock not ok 10 test_memcg_oom_group_leaf_events not ok 11 test_memcg_oom_group_parent_events not ok 12 test_memcg_oom_group_score_events To correct this unexpected failure, this patch write the 'memory' to subtree_control of root to get a right result. Signed-off-by: Alex Shi Cc: Shuah Khan Cc: Roman Gushchin Cc: Tejun Heo Cc: Mike Rapoport Cc: Jay Kamat Cc: linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Roman Gushchin Acked-by: Tejun Heo Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin

selftests: cgroup: fix cleanup path in test_memcg_subtree_control()

2019-05-31T13:43:35+00:00

[ Upstream commit e14d314c7a489f060d6d691866fef5f131281718 ] Dan reported, that cleanup path in test_memcg_subtree_control() triggers a static checker warning: ./tools/testing/selftests/cgroup/test_memcontrol.c:76 \ test_memcg_subtree_control() error: uninitialized symbol 'child2'. Fix this by initializing child2 and parent2 variables and split the cleanup path into few stages. Signed-off-by: Roman Gushchin Fixes: 84092dbcf901 ("selftests: cgroup: add memory controller self-tests") Reported-by: Dan Carpenter Cc: Dan Carpenter Cc: Shuah Khan (Samsung OSG) Cc: Mike Rapoport Signed-off-by: Shuah Khan Signed-off-by: Sasha Levin

Add tests for memory.oom.group

2018-09-07T22:36:01+00:00

Add tests for memory.oom.group for the following cases: - Killing all processes in a leaf cgroup, but leaving the parent untouched - Killing all processes in a parent and leaf cgroup - Keeping processes marked by OOM_SCORE_ADJ_MIN alive when considered for being killed by the group oom killer. Signed-off-by: Jay Kamat Acked-by: Roman Gushchin Signed-off-by: Shuah Khan (Samsung OSG)

Fix cg_read_strcmp()

2018-09-07T22:35:51+00:00

Fix a couple issues with cg_read_strcmp(), to improve correctness of cgroup tests - Fix cg_read_strcmp() always returning 0 for empty "needle" strings. Previously, this function read to a size = 1 buffer when comparing against empty strings, which would lead to cg_read_strcmp() comparing two empty strings. - Fix a memory leak in cg_read_strcmp() Fixes: 84092dbcf901 ("selftests: cgroup: add memory controller self-tests") Signed-off-by: Jay Kamat Acked-by: Roman Gushchin Signed-off-by: Shuah Khan (Samsung OSG)

cgroup: kselftests: add test_core to .gitignore

2018-09-06T18:24:47+00:00

Update .gitignore file. Signed-off-by: Lei Yang Signed-off-by: Shuah Khan (Samsung OSG)

selftests: cgroup: add gitignore file

2018-08-09T17:23:32+00:00

Add the executable 'test_memcontrol' to a .gitignore file. Signed-off-by: Anders Roxell Signed-off-by: Shuah Khan (Samsung OSG)

Add cgroup core selftests

2018-08-09T15:12:45+00:00

This commit adds tests for some of the core functionalities of cgroups v2. The commit adds tests for some core principles of croup V2 API: - test_cgcore_internal_process_constraint Tests internal process constraint. You can't add a pid to a domain parent if a controller is enabled. - test_cgcore_top_down_constraint_enable Tests that you can't enable a controller on a child if it's not enabled on the parent. - test_cgcore_top_down_constraint_disable Tests that you can't disable a controller on a parent if it's enabled in a child. - test_cgcore_no_internal_process_constraint_on_threads Tests that there's no internal process constrain on threaded cgroups. You can add threads/processes on a parent with a controller enabled. - test_cgcore_parent_becomes_threaded Tests that when a child becomes threaded the parent type becomes domain threaded. - test_cgcore_invalid_domain In a situation like: A (domain threaded) - B (threaded) - C (domain) it tests that C can't be used until it is turned into a threaded cgroup. The "cgroup.type" file will report "domain (invalid)" in these cases. Operations which fail due to invalid topology use EOPNOTSUPP as the errno. - test_cgcore_populated In a situation like: A(0) - B(0) - C(1) \ D(0) It tests that A, B and C's "populated" fields would be 1 while D's 0. It tests that after the one process in C is moved to root, A,B and C's "populated" fields would flip to "0" and file modified events will be generated on the "cgroup.events" files of both cgroups. Signed-off-by: Claudio Zumbo Cc: Shuah Khan Cc: Roman Gushchin Cc: Tejun Heo Cc: kernel-team@fb.com Acked-by: Tejun Heo Reviewed-by: Roman Gushchin Signed-off-by: Shuah Khan (Samsung OSG)

kselftest/cgroup: fix a signedness bug

2018-06-07T19:44:30+00:00

"len" needs to be signed for the error handling to work. Signed-off-by: Dan Carpenter Signed-off-by: Shuah Khan (Samsung OSG)