linux-kernel - Re: [PATCH v5 0/2] sched/numa: add statistics of numa balance task migration

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Message-ID: <qob64enpuewivcne2b7prnuahs3nr6v6kuil7suskcsfgdoqew@pdxpbd4ghrxk>
Date: Fri, 23 May 2025 16:52:46 -0700
From: Shakeel Butt <shakeel.butt@...ux.dev>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Chen Yu <yu.c.chen@...el.com>, peterz@...radead.org, mkoutny@...e.com, 
	mingo@...hat.com, tj@...nel.org, hannes@...xchg.org, corbet@....net, 
	mgorman@...e.de, mhocko@...nel.org, muchun.song@...ux.dev, 
	roman.gushchin@...ux.dev, tim.c.chen@...el.com, aubrey.li@...el.com, libo.chen@...cle.com, 
	kprateek.nayak@....com, vineethr@...ux.ibm.com, venkat88@...ux.ibm.com, ayushjai@....com, 
	cgroups@...r.kernel.org, linux-doc@...r.kernel.org, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, yu.chen.surf@...mail.com
Subject: Re: [PATCH v5 0/2] sched/numa: add statistics of numa balance task
 migration

On Fri, May 23, 2025 at 03:06:35PM -0700, Andrew Morton wrote:
> On Fri, 23 May 2025 20:48:02 +0800 Chen Yu <yu.c.chen@...el.com> wrote:
> 
> > Introducing the task migration and swap statistics in the following places:
> > /sys/fs/cgroup/{GROUP}/memory.stat
> > /proc/{PID}/sched
> > /proc/vmstat
> > 
> > These statistics facilitate a rapid evaluation of the performance and resource
> > utilization of the target workload.
> 
> Thanks.  I added this.
> 
> We're late in -rc7 but an earlier verison of this did have a run in
> linux-next.  Could reviewers please take a look relatively soon, let us
> know whether they believe this looks suitable for 6.16-rc1?
> 

The stats seems valuable but I am not convinced that memcg is the right
home for these stats. So, please hold until that is resolved.