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

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Message-Id: <20250527172112.18612286e9a193089d42a027@linux-foundation.org>
Date: Tue, 27 May 2025 17:21:12 -0700
From: Andrew Morton <akpm@...ux-foundation.org>
To: Shakeel Butt <shakeel.butt@...ux.dev>
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, 23 May 2025 16:52:46 -0700 Shakeel Butt <shakeel.butt@...ux.dev> wrote:

> 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.

No probs, I'll keep these in mm-new until something changes.