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Date: Thu, 22 Jan 2015 18:44:06 +0300
From: Stefan Strogin <s.strogin@partner.samsung.com>
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To: Pavel Machek <pavel@ucw.cz>, Minchan Kim <minchan@kernel.org>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Michal Nazarewicz <mina86@mina86.com>, aneesh.kumar@linux.vnet.ibm.com,
        Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
        Dmitry Safonov <d.safonov@partner.samsung.com>,
        Pintu Kumar <pintu.k@samsung.com>,
        Weijie Yang <weijie.yang@samsung.com>,
        Laura Abbott <lauraa@codeaurora.org>,
        SeongJae Park <sj38.park@gmail.com>, Hui Zhu <zhuhui@xiaomi.com>,
        Dyasly Sergey <s.dyasly@samsung.com>,
        Vyacheslav Tyrtov <v.tyrtov@samsung.com>,
        s.strogin@partner.samsung.com
Subject: Re: [PATCH 0/3] mm: cma: /proc/cmainfo
References: <cover.1419602920.git.s.strogin@partner.samsung.com>
 <20141229023639.GC27095@bbox> <20150102051111.GC4873@amd>
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Hello Pavel,

On 02/01/15 08:11, Pavel Machek wrote:
> On Mon 2014-12-29 11:36:39, Minchan Kim wrote:
>> Hello,
>>
>> On Fri, Dec 26, 2014 at 05:39:01PM +0300, Stefan I. Strogin wrote:
>>> Hello all,
>>>
>>> Here is a patch set that adds /proc/cmainfo.
>>>
>>> When compiled with CONFIG_CMA_DEBUG /proc/cmainfo will contain information
>>> about about total, used, maximum free contiguous chunk and all currently
>>> allocated contiguous buffers in CMA regions. The information about allocated
>>> CMA buffers includes pid, comm, allocation latency and stacktrace at the
>>> moment of allocation.
> We should not add new non-process related files in
> /proc. So... NAK. Should this go to debugfs instead?

As you say, I'll move it to debugfs and also split it by CMA region.
Something like: /sys/kernel/debug/cma/*/allocated
Thanks.