cgroup: keep track of number of descent cgroups

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Keep track of the number of online and dying descent cgroups.

This data will be used later to add an ability to control cgroup
hierarchy (limit the depth and the number of descent cgroups)
and display hierarchy stats.

Signed-off-by: Roman Gushchin <guro@fb.com>
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: kernel-team@fb.com
Cc: cgroups@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org

...

This commit is contained in:

Roman Gushchin 2017-08-02 17:55:29 +01:00 • committed by Tejun Heo

parent c705a00d77

commit 0679dee03c

2 changed files with 25 additions and 2 deletions

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8

include/linux/cgroup-defs.h

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19

kernel/cgroup/cgroup.c

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