linux-kernel - Re: [PATCH-cpuset v11 2/2] cpuset: use Union-Find to optimize the merging of cpumasks

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Message-ID: <Zqlxw-mm3-wJHvQY@slm.duckdns.org>
Date: Tue, 30 Jul 2024 13:05:39 -1000
From: Tejun Heo <tj@...nel.org>
To: Xavier <xavier_qy@....com>
Cc: longman@...hat.com, mkoutny@...e.com, akpm@...ux-foundation.org,
	lizefan.x@...edance.com, hannes@...xchg.org,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
	torvalds@...ux-foundation.org
Subject: Re: [PATCH-cpuset v11 2/2] cpuset: use Union-Find to optimize the
 merging of cpumasks

On Thu, Jul 04, 2024 at 02:24:44PM +0800, Xavier wrote:
> The process of constructing scheduling domains
>  involves multiple loops and repeated evaluations, leading to numerous
>  redundant and ineffective assessments that impact code efficiency.
> 
> Here, we use union-find to optimize the merging of cpumasks. By employing
> path compression and union by rank, we effectively reduce the number of
> lookups and merge comparisons.
> 
> Signed-off-by: Xavier <xavier_qy@....com>

Applied to cgroup/for-6.12.

Thanks.

-- 
tejun