linux-kernel - Re: [PATCH 0/2] mm/page_alloc: Remote per-cpu lists drain support

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Message-ID: <41e393e3eb7d2909130906954309acfe980238db.camel@redhat.com>
Date:   Thu, 10 Feb 2022 12:04:28 +0100
From:   Nicolas Saenz Julienne <nsaenzju@...hat.com>
To:     Xiongfeng Wang <wangxiongfeng2@...wei.com>,
        akpm@...ux-foundation.org, mtosatti <mtosatti@...hat.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        frederic@...nel.org, tglx@...utronix.de, mtosatti@...hat.com,
        mgorman@...e.de, linux-rt-users@...r.kernel.org, vbabka@...e.cz,
        cl@...ux.com, paulmck@...nel.org, willy@...radead.org
Subject: Re: [PATCH 0/2] mm/page_alloc: Remote per-cpu lists drain support

On Thu, 2022-02-10 at 18:59 +0800, Xiongfeng Wang wrote:
> Hi Nicolas,
> 
> I found there are several 'lru_add_drain_per_cpu()' worker thread on the
> NOHZ_FULL CPUs. I am just wondering do you have plan to add support for remote
> per-cpu LRU pagevec drain ?

Yes, this is something we've been meaning to fix too. But haven't started
looking into it yet (maybe Marcelo can contradict me here).

Regards,
Nicolas