linux-kernel - Re: [PATCH-cpuset v8 2/2] cpuset: use Union-Find to optimize the merging of cpumasks

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Message-ID: <ZoMXTZ3ITlYdNqMn@slm.duckdns.org>
Date: Mon, 1 Jul 2024 10:53:33 -1000
From: Tejun Heo <tj@...nel.org>
To: Xavier <xavier_qy@....com>
Cc: longman@...hat.com, mkoutny@...e.com, lizefan.x@...edance.com,
	hannes@...xchg.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH-cpuset v8 2/2] cpuset: use Union-Find to optimize the
 merging of cpumasks

On Sat, Jun 29, 2024 at 12:13:02AM +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>

Waiman, how do you like this conversion?

Thanks.

-- 
tejun