linux-kernel - Re: [RFC PATCH] mm: reduce noise in show

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Message-ID: <20220824133451.6kqttzm5t4iigz2i@suse.de>
Date:   Wed, 24 Aug 2022 14:34:51 +0100
From:   Mel Gorman <mgorman@...e.de>
To:     Michal Hocko <mhocko@...e.com>
Cc:     linux-mm@...ck.org, Christoph Hellwig <hch@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Johannes Weiner <hannes@...xchg.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RFC PATCH] mm: reduce noise in show_mem for lowmem allocations

On Tue, Aug 23, 2022 at 11:22:30AM +0200, Michal Hocko wrote:
> Hi,
> while discussing early DMA pool pre-allocation failure with Christoph
> [1] I have realized that the allocation failure warning is rather noisy
> for constrained allocations like GFP_DMA{32}. Those zones are usually
> not populated on all nodes very often as their memory ranges are
> constrained.
> 
> This is an attempt to reduce the ballast that doesn't provide any
> relevant information for those allocation failures investigation.
> Please note that I have only compile tested it (in my default config
> setup) and I am throwing it mostly to see what people think about it.
> 
> [1] http://lkml.kernel.org/r/20220817060647.1032426-1-hch@lst.de

No objections.

-- 
Mel Gorman
SUSE Labs