linux-kernel - Re: [PATCH 1/2] cgroup/cpuset: Don't track # of local child partitions

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Message-ID: <aPZrIV1Hhj9pIFqg@slm.duckdns.org>
Date: Mon, 20 Oct 2025 07:02:25 -1000
From: Tejun Heo <tj@...nel.org>
To: Waiman Long <longman@...hat.com>
Cc: Johannes Weiner <hannes@...xchg.org>,
	Michal Koutný <mkoutny@...e.com>,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	Chen Ridong <chenridong@...wei.com>
Subject: Re: [PATCH 1/2] cgroup/cpuset: Don't track # of local child
 partitions

On Sun, Oct 19, 2025 at 10:32:06PM -0400, Waiman Long wrote:
> The cpuset structure has a nr_subparts field which tracks the number
> of child local partitions underneath a particular cpuset. Right now,
> nr_subparts is only used in partition_is_populated() to avoid iteration
> of child cpusets if the condition is right. So by always performing the
> child iteration, we can avoid tracking the number of child partitions
> and simplify the code a bit.
> 
> Signed-off-by: Waiman Long <longman@...hat.com>

Applied to cgroup/for-6.19.

Thanks.

-- 
tejun