linux-kernel - Re: [RFC 2/5] mm, page_alloc: calculate pageset high and batch once per zone

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Message-ID: <20200910090018.GC2285@linux>
Date:   Thu, 10 Sep 2020 11:00:18 +0200
From:   Oscar Salvador <osalvador@...e.de>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Michal Hocko <mhocko@...nel.org>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        David Hildenbrand <david@...hat.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [RFC 2/5] mm, page_alloc: calculate pageset high and batch once
 per zone

On Mon, Sep 07, 2020 at 06:36:25PM +0200, Vlastimil Babka wrote:
> We currently call pageset_set_high_and_batch() for each possible cpu,
> which repeats the same calculations of high and batch values.
> 
> Instead call it once per zone, and it applies the calculated values
> to all per-cpu pagesets of the zone.
> 
> This also allows removing zone_pageset_init() and __zone_pcp_update() wrappers.
> 
> No functional change.
> 
> Signed-off-by: Vlastimil Babka <vbabka@...e.cz>

I like this, it simplifies the things.

Reviewed-by: Oscar Salvador <osalvador@...e.de>

-- 
Oscar Salvador
SUSE L3