linux-kernel - Re: [PATCH v2 0/5] Introduce memcg_stock

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Date:   Mon, 13 Feb 2023 14:36:39 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Roman Gushchin <roman.gushchin@...ux.dev>
Cc:     Marcelo Tosatti <mtosatti@...hat.com>,
        Leonardo Brás <leobras@...hat.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Muchun Song <muchun.song@...ux.dev>,
        Andrew Morton <akpm@...ux-foundation.org>,
        cgroups@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Frederic Weisbecker <fweisbecker@...e.de>
Subject: Re: [PATCH v2 0/5] Introduce memcg_stock_pcp remote draining

On Fri 03-02-23 11:25:16, Roman Gushchin wrote:
> On Fri, Feb 03, 2023 at 04:21:09PM +0100, Michal Hocko wrote:
> > OK, so this is a speculative patch. cpu_is_isolated doesn't exist yet. I
> > have talked to Frederic off-list and he is working on an implementation.
> > I will be offline next whole week (will be back Feb 13th) so I am
> > sending this early but this patch cannot be merged without his one of
> > course.
> > 
> > I have tried to summarize the reasoning behind both approach should we
> > ever need to revisit this approach. For now I strongly believe a simpler
> > solution should be preferred.
> > 
> > Roman, I have added your ack as you indicated but if you disagree with
> > the reasoning please let me know.
> 
> Great, thank you for preparing it up! Really nice summary.
> My ack definitely applies.
> 
> If you want, feel free to add a
> "Suggested-by: Roman Gushchin <roman.gushchin@...ux.dev>"
> tag to blame me later :)

Sure, I have updated the changelog. I will repost after the patchset by
Frederic[1] is merged.

[1] http://lkml.kernel.org/r/20230203232409.163847-1-frederic@kernel.org
-- 
Michal Hocko
SUSE Labs