linux-kernel - Re: [PATCH 2/3] mm: cma: introduce /proc/cmainfo

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Date:	Wed, 21 Jan 2015 17:18:29 +0300
From:	Stefan Strogin <s.strogin@...tner.samsung.com>
To:	Laura Abbott <lauraa@...eaurora.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Cc:	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Michal Nazarewicz <mina86@...a86.com>,
	aneesh.kumar@...ux.vnet.ibm.com,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Dmitry Safonov <d.safonov@...tner.samsung.com>,
	Pintu Kumar <pintu.k@...sung.com>,
	Weijie Yang <weijie.yang@...sung.com>,
	SeongJae Park <sj38.park@...il.com>,
	Hui Zhu <zhuhui@...omi.com>, Minchan Kim <minchan@...nel.org>,
	Dyasly Sergey <s.dyasly@...sung.com>,
	Vyacheslav Tyrtov <v.tyrtov@...sung.com>,
	s.strogin@...tner.samsung.com, stefan.strogin@...il.com
Subject: Re: [PATCH 2/3] mm: cma: introduce /proc/cmainfo

Hello Laura,

On 30/12/14 00:11, Laura Abbott wrote:
>
> This seems better suited to debugfs over procfs, especially since the
> option can be turned off. It would be helpful to break it
> down by cma region as well to make it easier on systems with a lot
> of regions.
>
> Thanks,
> Laura
>

I thought that cmainfo is very similar to vmallocinfo, therefore put it
to procfs. However it seems I have no other choice than debugfs as Pavel
Machek wrote :-)
> We should not add new non-process related files in /proc.
(https://lkml.org/lkml/2015/1/2/6)

And thanks, I agree that breaking it down by CMA region would be useful.

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