linux-kernel - Re: [PATCH v2] mm/vmstat: Defer the refresh_zone_stat

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Message-ID: <Zu0/nKB5oRF8Yvdk@csail.mit.edu>
Date: Fri, 20 Sep 2024 09:25:48 +0000
From: "Srivatsa S. Bhat" <srivatsa@...il.mit.edu>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Saurabh Singh Sengar <ssengar@...rosoft.com>,
	Saurabh Sengar <ssengar@...ux.microsoft.com>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"wei.liu@...nel.org" <wei.liu@...nel.org>,
	"mgorman@...hsingularity.net" <mgorman@...hsingularity.net>,
	"cl@...ux.com" <cl@...ux.com>
Subject: Re: [PATCH v2] mm/vmstat: Defer the refresh_zone_stat_thresholds
 after all CPUs bringup

On Fri, Sep 20, 2024 at 01:16:18AM -0700, Andrew Morton wrote:
> On Thu, 19 Sep 2024 19:52:45 +0000 Saurabh Singh Sengar <ssengar@...rosoft.com> wrote:
> 
> > > > >
> > > 
> > > Adding cl@...ux.com instead of clameter@....com for Christoph Lameter
> > > 
> > > - Saurabh
> > 
> > Hi Andrew,
> > 
> > Can we get this merge in for next kernel release.
> > Please let me know if there is any concern with this patch.
> > 
> 
> Anshuman's review comment remains unaddressed:
> https://lkml.kernel.org/r/b1dc2aa1-cd38-4f1f-89e9-6d009a619541@arm.com
> 
> Also, Christoph's observations from the v1 patch review haven't really
> been addressed.
> 
> So it sounds to me that an alternative implementation should be
> investigated?

I believe Saurabh had a follow-up discussion in person with Christoph
regarding this patch, following our talk on this topic at LPC:
https://lpc.events/event/18/contributions/1817/

@Christoph, would you mind giving your Ack if this patch v2 looks good
to you, or kindly point out if there are any lingering concerns?

Thanks a lot!

Regards,
Srivatsa
Microsoft Linux Systems Group