Re: [PATCH] cgroup/cpuset: avoid unneeded cpuset_mutex re-lock

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To: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: Re: [PATCH] cgroup/cpuset: avoid unneeded cpuset_mutex re-lock
From: Tejun Heo <tj@xxxxxxxxxx>
Date: Mon, 10 Jul 2023 10:26:36 -1000
Cc: longman@xxxxxxxxxx, hannes@xxxxxxxxxxx, lizefan.x@xxxxxxxxxxxxx, cgroups@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20230704120352.1226787-1-linmiaohe@huawei.com>
References: <20230704120352.1226787-1-linmiaohe@huawei.com>

On Tue, Jul 04, 2023 at 08:03:52PM +0800, Miaohe Lin wrote:
> 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@xxxxxxxxxx>

Applied to cgroup/for-6.6.

Thanks.

-- 
tejun

References:
- [PATCH] cgroup/cpuset: avoid unneeded cpuset_mutex re-lock
  - From: Miaohe Lin

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