cgroup/cpuset: avoid unneeded cpuset_mutex re-lock

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cpuset_mutex unlock and lock pair is only needed when transferring tasks
out of empty cpuset. Avoid unneeded cpuset_mutex re-lock when !is_empty
to save cpu cycles.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Miaohe Lin 2023-07-04 20:03:52 +08:00 • committed by Tejun Heo

parent a453be9725

commit 48f074565b

1 changed files with 4 additions and 5 deletions

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kernel/cgroup/cpuset.c

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