- 07 8月, 2019 1 次提交
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由 Chris Down 提交于
commit b59b1baab789eacdde809135542e3d4f256f6878 upstream. On my laptop most memcg kselftests were being skipped because it claimed cgroup v2 hierarchy wasn't mounted, but this isn't correct. Instead, it seems current systemd HEAD mounts it with the name "cgroup2" instead of "cgroup": % grep cgroup /proc/mounts cgroup2 /sys/fs/cgroup cgroup2 rw,nosuid,nodev,noexec,relatime,nsdelegate 0 0 I can't think of a reason to need to check fs_spec explicitly since it's arbitrary, so we can just rely on fs_vfstype. After these changes, `make TARGETS=cgroup kselftest` actually runs the cgroup v2 tests in more cases. Link: http://lkml.kernel.org/r/20190723210737.GA487@chrisdown.nameSigned-off-by: NChris Down <chris@chrisdown.name> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Tejun Heo <tj@kernel.org> Cc: Roman Gushchin <guro@fb.com> Cc: <stable@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 08 9月, 2018 2 次提交
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由 Jay Kamat 提交于
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: NJay Kamat <jgkamat@fb.com> Acked-by: NRoman Gushchin <guro@fb.com> Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>
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由 Jay Kamat 提交于
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: 84092dbc ("selftests: cgroup: add memory controller self-tests") Signed-off-by: NJay Kamat <jgkamat@fb.com> Acked-by: NRoman Gushchin <guro@fb.com> Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>
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- 09 8月, 2018 1 次提交
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由 Claudio 提交于
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: NClaudio Zumbo <claudioz@fb.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Roman Gushchin <guro@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: kernel-team@fb.com Acked-by: NTejun Heo <tj@kernel.org> Reviewed-by: NRoman Gushchin <guro@fb.com> Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>
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- 08 6月, 2018 1 次提交
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由 Dan Carpenter 提交于
"len" needs to be signed for the error handling to work. Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>
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- 31 5月, 2018 3 次提交
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由 Roman Gushchin 提交于
cg_name(const char *root, const char *name) is always called with non-empty root and name arguments, so there is no sense in checking it in the function body (after using in strlen()). Signed-off-by: NRoman Gushchin <guro@fb.com> Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>
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由 Mike Rapoport 提交于
The new test verifies that memory.swap.max and memory.swap.current behave as expected for simple allocation scenarios Signed-off-by: NMike Rapoport <rppt@linux.vnet.ibm.com> Acked-by: NTejun Heo <tj@kernel.org> Acked-by: NRoman Gushchin <guro@fb.com> Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>
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由 Roman Gushchin 提交于
Cgroups are used for controlling the physical resource distribution (memory, CPU, io, etc) and often are used as basic building blocks for large distributed computing systems. Even small differences in the actual behavior may lead to significant incidents. The codebase is under the active development, which will unlikely stop at any time soon. Also it's scattered over different kernel subsystems, which makes regressions more probable. Given that, the lack of any tests is crying. This patch implements some basic tests for the memory controller, as well as a minimal required framework. It doesn't pretend for a very good coverage, but pretends to be a starting point. Hopefully, any following significant changes will include corresponding tests. Tests for CPU and io controllers, as well as cgroup core are next in the todo list. Signed-off-by: NRoman Gushchin <guro@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: kernel-team@fb.com Cc: linux-kselftest@vger.kernel.org Cc: linux-kernel@vger.kernel.org Acked-by: NTejun Heo <tj@kernel.org> Signed-off-by: NShuah Khan (Samsung OSG) <shuah@kernel.org>
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