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docs/cgroup: Add the list of threaded controllers to cgroup-v2.rst

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The cgroup-v2 file mentions the concept of threaded controllers which can
be used in a threaded cgroup. However, it doesn't mention clearly which
controllers are threaded leading to some confusion about what controller
can be used requiring some experimentation. Clear this up by explicitly
listing the controllers that can be used currently in a threaded cgroup.

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Waiman Long 2023-10-17 13:13:41 -04:00 committed by Tejun Heo
parent 27a6c5c50c
commit a41796b553
1 changed files with 7 additions and 0 deletions
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7
Documentation/admin-guide/cgroup-v2.rst
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@ -364,6 +364,13 @@ constraint, a threaded controller must be able to handle competition
between threads in a non-leaf cgroup and its child cgroups. Each
threaded controller defines how such competitions are handled.
Currently, the following controllers are threaded and can be enabled
in a threaded cgroup::
- cpu
- cpuset
- perf_event
- pids
[Un]populated Notification
--------------------------