kernel/linux.git/tools/testing/selftests/cgroup/Makefile, branch v6.6.131

Merge tag 'cgroup-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2023-09-01T22:58:21+00:00

Pull cgroup updates from Tejun Heo: - Per-cpu cpu usage stats are now tracked This currently isn't printed out in the cgroupfs interface and can only be accessed through e.g. BPF. Should decide on a not-too-ugly way to show per-cpu stats in cgroupfs - cpuset received some cleanups and prepatory patches for the pending cpus.exclusive patchset which will allow cpuset partitions to be created below non-partition parents, which should ease the management of partition cpusets - A lot of code and documentation cleanup patches - tools/testing/selftests/cgroup/test_cpuset.c added * tag 'cgroup-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (32 commits) cgroup: Avoid -Wstringop-overflow warnings cgroup:namespace: Remove unused cgroup_namespaces_init() cgroup/rstat: Record the cumulative per-cpu time of cgroup and its descendants cgroup: clean up if condition in cgroup_pidlist_start() cgroup: fix obsolete function name in cgroup_destroy_locked() Documentation: cgroup-v2.rst: Correct number of stats entries cgroup: fix obsolete function name above css_free_rwork_fn() cgroup/cpuset: fix kernel-doc cgroup: clean up printk() cgroup: fix obsolete comment above cgroup_create() docs: cgroup-v1: fix typo docs: cgroup-v1: correct the term of Page Cache organization in inode cgroup/misc: Store atomic64_t reads to u64 cgroup/misc: Change counters to be explicit 64bit types cgroup/misc: update struct members descriptions cgroup: remove cgrp->kn check in css_populate_dir() cgroup: fix obsolete function name cgroup: use cached local variable parent in for loop cgroup: remove obsolete comment above struct cgroupstats cgroup: put cgroup_tryget_css() inside CONFIG_CGROUP_SCHED ...

selftests: cgroup: add test_zswap program

2023-08-18T17:12:08+00:00

Patch series "selftests: cgroup: add zswap test program". This series adds 2 zswap related selftests that verify known and fixed issues. A new dedicated test program (test_zswap) is proposed since the test cases are specific to zswap and hosts specific helpers. The first patch adds the (empty) test program, while the other 2 add an actual test function each. This patch (of 3): Add empty cgroup-zswap self test scaffold program, test functions to be added in the next commits. Link: https://lkml.kernel.org/r/20230621153548.428093-1-cerasuolodomenico@gmail.com Link: https://lkml.kernel.org/r/20230621153548.428093-2-cerasuolodomenico@gmail.com Signed-off-by: Domenico Cerasuolo Cc: Dan Streetman Cc: Johannes Weiner Cc: Michal Hocko Cc: Muchun Song Cc: Nhat Pham Cc: Rik van Riel Cc: Roman Gushchin Cc: Seth Jennings Cc: Shakeel Butt Cc: Shuah Khan Cc: Tejun Heo Cc: Vitaly Wool Cc: Zefan Li Signed-off-by: Andrew Morton

selftests: cgroup: Add cpuset migrations testcase

2023-07-10T20:29:53+00:00

Add a separate testfile to verify treating permissions when tasks are migrated on cgroup v2 hierarchy between cpuset cgroups. In accordance with v2 design, migration should be allowed based on delegation boundaries (i.e. cgroup.procs permissions) and does not depend on the migrated object (i.e. unprivileged process can migrate another process (even privileged) as long as it remains in the original dedicated scope). Signed-off-by: Michal Koutný Signed-off-by: Tejun Heo

kselftest/cgroup: Add cpuset v2 partition root state test

2022-09-04T20:47:28+00:00

Add a test script test_cpuset_prs.sh with a helper program wait_inotify for exercising the cpuset v2 partition root state code. Signed-off-by: Waiman Long Signed-off-by: Tejun Heo

cgroup: Add new test_cpu.c test suite in cgroup selftests

2022-04-22T18:39:32+00:00

The cgroup selftests suite currently contains tests that validate various aspects of cgroup, such as validating the expected behavior for memory controllers, the expected behavior of cgroup.procs, etc. There are no tests that validate the expected behavior of the cgroup cpu controller. This patch therefore adds a new test_cpu.c file that will contain cpu controller testcases. The file currently only contains a single testcase that validates creating nested cgroups with cgroup.subtree_control including cpu. Future patches will add more sophisticated testcases that validate functional aspects of the cpu controller. Signed-off-by: David Vernet Signed-off-by: Tejun Heo

selftests: cgroup: build error multiple outpt files

2021-12-10T23:46:01+00:00

When building selftests/cgroup: with clang the following error are seen: clang -Wall -pthread test_memcontrol.c cgroup_util.c ../clone3/clone3_selftests.h -o .../builds/current/kselftest/cgroup/test_memcontrol clang: error: cannot specify -o when generating multiple output files make[3]: *** [../lib.mk:146: .../builds/current/kselftest/cgroup/test_memcontrol] Error 1 Rework to add the header files to LOCAL_HDRS before including ../lib.mk, since the dependency is evaluated in '$(OUTPUT)/%:%.c $(LOCAL_HDRS)' in file lib.mk. Suggested-by: Arnd Bergmann Signed-off-by: Anders Roxell Acked-by: Christian Brauner Signed-off-by: Shuah Khan

tests/cgroup: test cgroup.kill

2021-05-10T14:41:11+00:00

Test that the new cgroup.kill feature works as intended. Link: https://lore.kernel.org/r/20210503143922.3093755-5-brauner@kernel.org Cc: Shakeel Butt Cc: Tejun Heo Cc: cgroups@vger.kernel.org Acked-by: Roman Gushchin Signed-off-by: Christian Brauner Signed-off-by: Tejun Heo

kselftests: cgroup: add kernel memory accounting tests

2020-08-07T18:33:25+00:00

Add some tests to cover the kernel memory accounting functionality. These are covering some issues (and changes) we had recently. 1) A test which allocates a lot of negative dentries, checks memcg slab statistics, creates memory pressure by setting memory.max to some low value and checks that some number of slabs was reclaimed. 2) A test which covers side effects of memcg destruction: it creates and destroys a large number of sub-cgroups, each containing a multi-threaded workload which allocates and releases some kernel memory. Then it checks that the charge ans memory.stats do add up on the parent level. 3) A test which reads /proc/kpagecgroup and implicitly checks that it doesn't crash the system. 4) A test which spawns a large number of threads and checks that the kernel stacks accounting works as expected. 5) A test which checks that living charged slab objects are not preventing the memory cgroup from being released after being deleted by a user. Signed-off-by: Roman Gushchin Signed-off-by: Andrew Morton Cc: Christoph Lameter Cc: Johannes Weiner Cc: Michal Hocko Cc: Shakeel Butt Cc: Tejun Heo Cc: Vlastimil Babka Link: http://lkml.kernel.org/r/20200623174037.3951353-19-guro@fb.com Signed-off-by: Linus Torvalds

selftests/cgroup: add tests for cloning into cgroups

2020-02-12T22:57:51+00:00

Expand the cgroup test-suite to include tests for CLONE_INTO_CGROUP. This adds the following tests: - CLONE_INTO_CGROUP manages to clone a process directly into a correctly delegated cgroup - CLONE_INTO_CGROUP fails to clone a process into a cgroup that has been removed after we've opened an fd to it - CLONE_INTO_CGROUP fails to clone a process into an invalid domain cgroup - CLONE_INTO_CGROUP adheres to the no internal process constraint - CLONE_INTO_CGROUP works with the freezer feature Cc: Tejun Heo Cc: Shuah Khan Cc: cgroups@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Acked-by: Roman Gushchin Signed-off-by: Christian Brauner Signed-off-by: Tejun Heo

selftests: cgroup: Run test_core under interfering stress

2019-10-07T14:11:54+00:00

test_core tests various cgroup creation/removal and task migration paths. Run the tests repeatedly with interfering noise (for lockdep checks). Currently, forking noise and subsystem enabled/disabled switching are the implemented noises. Signed-off-by: Michal Koutný Signed-off-by: Tejun Heo