linux-stable.git/tools/testing/selftests/cgroup, branch linux-5.15.y

kseltest/cgroup: Make test_stress.sh work if run interactively

2022-06-09T08:23:30+00:00

commit 213adc63dfbcdff9a0c19ec1f2681fda9c05cf6d upstream.

Commit 54de76c01239 ("kselftest/cgroup: fix test_stress.sh to use OUTPUT
dir") changes the test_core command path from . to $OUTPUT. However,
variable OUTPUT may not be defined if the command is run interactively.
Fix that by using ${OUTPUT:-.} to cover both cases.

Signed-off-by: Waiman Long 
Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

kselftest/cgroup: fix test_stress.sh to use OUTPUT dir

2022-06-09T08:22:57+00:00

[ Upstream commit 54de76c0123915e7533ce352de30a1f2d80fe81f ]

Running cgroup kselftest with O= fails to run the with_stress test due
to hardcoded ./test_core. Find test_core binary using the OUTPUT directory.

Fixes: 1a99fcc035fb ("selftests: cgroup: Run test_core under interfering stress")
Signed-off-by: Phil Auld 
Signed-off-by: Tejun Heo 
Signed-off-by: Sasha Levin

selftests: cgroup: Test open-time cgroup namespace usage for migration checks

2022-04-13T18:59:27+00:00

commit bf35a7879f1dfb0d050fe779168bcf25c7de66f5 upstream.

When a task is writing to an fd opened by a different task, the perm check
should use the cgroup namespace of the latter task. Add a test for it.

Tested-by: Michal Koutný 
Signed-off-by: Tejun Heo 
Signed-off-by: Ovidiu Panait 
Signed-off-by: Greg Kroah-Hartman

selftests: cgroup: Test open-time credential usage for migration checks

2022-04-13T18:59:27+00:00

commit 613e040e4dc285367bff0f8f75ea59839bc10947 upstream.

When a task is writing to an fd opened by a different task, the perm check
should use the credentials of the latter task. Add a test for it.

Tested-by: Michal Koutný 
Signed-off-by: Tejun Heo 
Signed-off-by: Ovidiu Panait 
Signed-off-by: Greg Kroah-Hartman

selftests: cgroup: Make cg_create() use 0755 for permission instead of 0644

2022-04-13T18:59:27+00:00

commit b09c2baa56347ae65795350dfcc633dedb1c2970 upstream.

0644 is an odd perm to create a cgroup which is a directory. Use the regular
0755 instead. This is necessary for euid switching test case.

Reviewed-by: Michal Koutný 
Signed-off-by: Tejun Heo 
Signed-off-by: Ovidiu Panait 
Signed-off-by: Greg Kroah-Hartman

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

tests/cgroup: move cg_wait_for(), cg_prepare_for_wait()

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

as they will be used by the tests for cgroup killing.

Link: https://lore.kernel.org/r/20210503143922.3093755-4-brauner@kernel.org
Cc: Tejun Heo 
Cc: cgroups@vger.kernel.org
Reviewed-by: Shakeel Butt 
Acked-by: Roman Gushchin 
Signed-off-by: Christian Brauner 
Signed-off-by: Tejun Heo

tests/cgroup: use cgroup.kill in cg_killall()

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

If cgroup.kill file is supported make use of it.

Link: https://lore.kernel.org/r/20210503143922.3093755-3-brauner@kernel.org
Cc: Tejun Heo 
Cc: cgroups@vger.kernel.org
Reviewed-by: Shakeel Butt 
Acked-by: Roman Gushchin 
Signed-off-by: Christian Brauner 
Signed-off-by: Tejun Heo

kselftests: cgroup: update kmem test for new vmstat implementation

2021-04-30T18:20:38+00:00

With memcg having switched to rstat, memory.stat output is precise.
Update the cgroup selftest to reflect the expectations and error
tolerances of the new implementation.

Also add newly tracked types of memory to the memory.stat side of the
equation, since they're included in memory.current and could throw false
positives.

Link: https://lkml.kernel.org/r/20210209163304.77088-9-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner 
Reviewed-by: Shakeel Butt 
Reviewed-by: Michal Koutný 
Acked-by: Roman Gushchin 
Cc: Michal Hocko 
Cc: Tejun Heo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

selftests/cgroup: Fix build on older distros

2020-11-10T22:13:25+00:00

On older distros struct clone_args does not have a cgroup member,
leading to build errors:

 cgroup_util.c: In function 'clone_into_cgroup':
 cgroup_util.c:343:4: error: 'struct clone_args' has no member named 'cgroup'
 cgroup_util.c:346:33: error: invalid application of 'sizeof' to incomplete
  type 'struct clone_args'

But the selftests already have a locally defined version of the
structure which is up to date, called __clone_args.

So use __clone_args which fixes the error.

Signed-off-by: Michael Ellerman 
Signed-off-by: Sachin Sant >
Acked-by: Christian Brauner 
Signed-off-by: Shuah Khan