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Message-ID: <57fefe22-440e-4ce1-2e34-5494f2cce893@arm.com>
Date:   Wed, 14 Jun 2023 11:41:32 +0100
From:   Ryan Roberts <ryan.roberts@....com>
To:     Yu Zhao <yuzhao@...gle.com>
Cc:     Jonathan Corbet <corbet@....net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v1 0/2] Report on physically contiguous memory in smaps

On 13/06/2023 19:44, Yu Zhao wrote:
> On Tue, Jun 13, 2023 at 05:09:48PM +0100, Ryan Roberts wrote:
>> Hi All,
>>
>> I thought I would try my luck with this pair of patches...
> 
> Ack on the idea.
> 
> Actually I have a script to do just this, but it's based on pagemap (attaching the script at the end).

I did consider that approach, but it was much more code to write the script than
to modify smaps ;-). Longer term, I think it would be good to have it in smaps
because its more accessible. For the contpte case we would need to add a bit to
every pagemap entry to express that. I'm not sure how palletable that would be
for a arch-specific thing?

Thanks for the script anyway!


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