linux-kernel - Re: [v7 PATCH 01/12] mm: vmscan: use nid from shrink

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Date:   Tue, 9 Feb 2021 11:14:14 -0800
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Yang Shi <shy828301@...il.com>
Cc:     Roman Gushchin <guro@...com>, Kirill Tkhai <ktkhai@...tuozzo.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Dave Chinner <david@...morbit.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...e.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux MM <linux-mm@...ck.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [v7 PATCH 01/12] mm: vmscan: use nid from shrink_control for tracepoint

On Tue, Feb 9, 2021 at 9:47 AM Yang Shi <shy828301@...il.com> wrote:
>
> The tracepoint's nid should show what node the shrink happens on, the start tracepoint
> uses nid from shrinkctl, but the nid might be set to 0 before end tracepoint if the
> shrinker is not NUMA aware, so the traceing

tracing

> log may show the shrink happens on one
> node but end up on the other node.  It seems confusing.  And the following patch
> will remove using nid directly in do_shrink_slab(), this patch also helps cleanup
> the code.
>
> Acked-by: Vlastimil Babka <vbabka@...e.cz>
> Acked-by: Kirill Tkhai <ktkhai@...tuozzo.com>
> Signed-off-by: Yang Shi <shy828301@...il.com>

Reviewed-by: Shakeel Butt <shakeelb@...gle.com>