linux-kernel - Re: [PATCH v2 1/6] sched/fair: add SD

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Message-ID: <20240131220018.GA18560@ranerica-svr.sc.intel.com>
Date: Wed, 31 Jan 2024 14:00:18 -0800
From: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
To: alexs@...nel.org
Cc: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>,
	Juri Lelli <juri.lelli@...hat.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ben Segall <bsegall@...gle.com>,
	Daniel Bristot de Oliveira <bristot@...hat.com>,
	Valentin Schneider <vschneid@...hat.com>,
	linux-kernel@...r.kernel.org, sshegde@...ux.ibm.com
Subject: Re: [PATCH v2 1/6] sched/fair: add SD_CLUSTER in comments

On Tue, Jan 30, 2024 at 09:17:03PM +0800, alexs@...nel.org wrote:
> From: Alex Shi <alexs@...nel.org>
> 
> The SD_CLUSTER omitted in following TOPOLOGY_SD_FLAGS explaination, add
> it to fill the absent.

Perhaps saying: "The description of SD_CLUSTER is missing. Add it." is
sufficient.

> 
> Signed-off-by: Alex Shi <alexs@...nel.org>
> To: linux-kernel@...r.kernel.org
> To: Daniel Bristot de Oliveira <bristot@...hat.com>
> To: Ben Segall <bsegall@...gle.com>
> To: Steven Rostedt <rostedt@...dmis.org>
> To: Dietmar Eggemann <dietmar.eggemann@....com>
> To: Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>
> To: Valentin Schneider <vschneid@...hat.com>
> To: Vincent Guittot <vincent.guittot@...aro.org>
> To: Juri Lelli <juri.lelli@...hat.com>
> To: Peter Zijlstra <peterz@...radead.org>
> To: Ingo Molnar <mingo@...hat.com>
> ---
>  kernel/sched/topology.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
> index 10d1391e7416..c342c52b1f34 100644
> --- a/kernel/sched/topology.c
> +++ b/kernel/sched/topology.c
> @@ -1554,6 +1554,7 @@ static struct cpumask		***sched_domains_numa_masks;
>   * function:
>   *
>   *   SD_SHARE_CPUCAPACITY   - describes SMT topologies
> + *   SD_CLUSTER		    - describes Cluster topologies

This description does not really add much. Perhaps syaing "describes
CPU cluster topologies". Then users can go to the definiton of
SD_CLUSTER.