linux-stable.git/tools/testing/selftests/cgroup, branch v5.7 Linux kernel stable tree Merge tag 'spdx-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx 2020-04-03T20:12:26+00:00 Linus Torvalds torvalds@linux-foundation.org 2020-04-03T20:12:26+00:00 ff2ae607c6f329d11a3b0528801ea7474be8c3e9 Pull SPDX updates from Greg KH: "Here are three SPDX patches for 5.7-rc1. One fixes up the SPDX tag for a single driver, while the other two go through the tree and add SPDX tags for all of the .gitignore files as needed. Nothing too complex, but you will get a merge conflict with your current tree, that should be trivial to handle (one file modified by two things, one file deleted.) All three of these have been in linux-next for a while, with no reported issues other than the merge conflict" * tag 'spdx-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx: ASoC: MT6660: make spdxcheck.py happy .gitignore: add SPDX License Identifier .gitignore: remove too obvious comments 
Pull SPDX updates from Greg KH:
 "Here are three SPDX patches for 5.7-rc1.

  One fixes up the SPDX tag for a single driver, while the other two go
  through the tree and add SPDX tags for all of the .gitignore files as
  needed.

  Nothing too complex, but you will get a merge conflict with your
  current tree, that should be trivial to handle (one file modified by
  two things, one file deleted.)

  All three of these have been in linux-next for a while, with no
  reported issues other than the merge conflict"

* tag 'spdx-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
  ASoC: MT6660: make spdxcheck.py happy
  .gitignore: add SPDX License Identifier
  .gitignore: remove too obvious comments
.gitignore: add SPDX License Identifier 2020-03-25T10:50:48+00:00 Masahiro Yamada masahiroy@kernel.org 2020-03-03T13:35:59+00:00 d198b34f3855eee2571dda03eea75a09c7c31480 Add SPDX License Identifier to all .gitignore files. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Add SPDX License Identifier to all .gitignore files.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
selftests/cgroup: add tests for cloning into cgroups 2020-02-12T22:57:51+00:00 Christian Brauner christian.brauner@ubuntu.com 2020-02-05T13:26:23+00:00 9bd5910d7f3db2f65be139d2679dd9daa4a3419a 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 <tj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: cgroups@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Acked-by: Roman Gushchin <guro@fb.com> Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: Tejun Heo <tj@kernel.org> 
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 <tj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: cgroups@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Acked-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
kselftest/cgroup: add cgroup destruction test 2020-02-12T22:12:04+00:00 Suren Baghdasaryan surenb@google.com 2020-01-24T11:40:17+00:00 04189382c0be4e045d63a38b47f012a8f6c35edc Add new test to verify that a cgroup with dead processes can be destroyed. The test spawns a child process which allocates and touches 100MB of RAM to ensure prolonged exit. Subsequently it kills the child, waits until the cgroup containing the child is empty and destroys the cgroup. Signed-off-by: Suren Baghdasaryan <surenb@google.com> [mkoutny@suse.com: Fix typo in test_cgcore_destroy comment] Acked-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> 
Add new test to verify that a cgroup with dead processes can be destroyed.
The test spawns a child process which allocates and touches 100MB of RAM
to ensure prolonged exit. Subsequently it kills the child, waits until
the cgroup containing the child is empty and destroys the cgroup.

Signed-off-by: Suren Baghdasaryan <surenb@google.com>
[mkoutny@suse.com: Fix typo in test_cgcore_destroy comment]
Acked-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
selftests: Uninitialized variable in test_cgcore_proc_migration() 2020-01-09T23:21:23+00:00 Dan Carpenter dan.carpenter@oracle.com 2020-01-08T05:46:29+00:00 192c197cbca599321de95a4cf15c2fa0681140d3 The "c_threads" variable is used in the error handling code before it has been initialized Fixes: 11318989c381 ("selftests: cgroup: Add task migration tests") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> 
The "c_threads" variable is used in the error handling code before it
has been initialized

Fixes: 11318989c381 ("selftests: cgroup: Add task migration tests")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
kselftests: cgroup: Avoid the reuse of fd after it is deallocated 2019-11-12T15:33:59+00:00 Hewenliang hewenliang4@huawei.com 2019-11-12T02:16:55+00:00 d671fa6393d6788fc65555d4643b71cb3a361f36 It is necessary to set fd to -1 when inotify_add_watch() fails in cg_prepare_for_wait. Otherwise the fd which has been closed in cg_prepare_for_wait may be misused in other functions such as cg_enter_and_wait_for_frozen and cg_freeze_wait. Fixes: 5313bfe425c8 ("selftests: cgroup: add freezer controller self-tests") Signed-off-by: Hewenliang <hewenliang4@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> 
It is necessary to set fd to -1 when inotify_add_watch() fails in
cg_prepare_for_wait. Otherwise the fd which has been closed in
cg_prepare_for_wait may be misused in other functions such as
cg_enter_and_wait_for_frozen and cg_freeze_wait.

Fixes: 5313bfe425c8 ("selftests: cgroup: add freezer controller self-tests")
Signed-off-by: Hewenliang <hewenliang4@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
selftests: cgroup: Run test_core under interfering stress 2019-10-07T14:11:54+00:00 Michal Koutný mkoutny@suse.com 2019-10-04T10:57:43+00:00 1a99fcc035fb666f5d0909aef0a753284cb5d04c 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 <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> 
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 <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
selftests: cgroup: Add task migration tests 2019-10-07T14:11:54+00:00 Michal Koutný mkoutny@suse.com 2019-10-04T10:57:42+00:00 11318989c381d2b08b4e361a03df09d54434b26c Add two new tests that verify that thread and threadgroup migrations work as expected. Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> 
Add two new tests that verify that thread and threadgroup migrations
work as expected.

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
selftests: cgroup: Simplify task self migration 2019-10-07T14:11:54+00:00 Michal Koutný mkoutny@suse.com 2019-10-04T10:57:41+00:00 58c9f75b86f76895b9dd44f21dc1e37d0f477cc7 Simplify task migration by being oblivious about its PID during migration. This allows to easily migrate individual threads as well. This change brings no functional change and prepares grounds for thread granularity migrating tests. Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> 
Simplify task migration by being oblivious about its PID during
migration. This allows to easily migrate individual threads as well.
This change brings no functional change and prepares grounds for thread
granularity migrating tests.

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
kselftests: cgroup: add freezer mkdir test 2019-09-12T21:04:40+00:00 Roman Gushchin guro@fb.com 2019-09-12T17:56:44+00:00 44e9d308a51fbf6d2e5a913f7452a5d5f1902249 Add a new cgroup freezer selftest, which checks that if a cgroup is frozen, their new child cgroups will properly inherit the frozen state. It creates a parent cgroup, freezes it, creates a child cgroup and populates it with a dummy process. Then it checks that both parent and child cgroup are frozen. Signed-off-by: Roman Gushchin <guro@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Tejun Heo <tj@kernel.org> 
Add a new cgroup freezer selftest, which checks that if a cgroup is
frozen, their new child cgroups will properly inherit the frozen
state.

It creates a parent cgroup, freezes it, creates a child cgroup
and populates it with a dummy process. Then it checks that both
parent and child cgroup are frozen.

Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>