From: Pavel Machek <pavel@ucw.cz>
To: Minchan Kim <minchan@kernel.org>
Cc: "Stefan I. Strogin" <s.strogin@partner.samsung.com>,
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>
Subject: Re: [PATCH 0/3] mm: cma: /proc/cmainfo
Date: Fri, 2 Jan 2015 06:11:11 +0100 [thread overview]
Message-ID: <20150102051111.GC4873@amd> (raw)
In-Reply-To: <20141229023639.GC27095@bbox>
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?
> It just says what you are doing but you didn't say why we need it.
> I can guess but clear description(ie, the problem what you want to
> solve with this patchset) would help others to review, for instance,
> why we need latency, why we need callstack, why we need new wheel
> rather than ftrace and so on.
>
> Thanks.
>
> >
> > Example:
> >
> > # cat /proc/cmainfo
> > CMARegion stat: 65536 kB total, 248 kB used, 65216 kB max contiguous chunk
--
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next prev parent reply other threads:[~2015-01-02 5:11 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-26 14:39 [PATCH 0/3] mm: cma: /proc/cmainfo Stefan I. Strogin
2014-12-26 14:39 ` [PATCH 1/3] stacktrace: add seq_print_stack_trace() Stefan I. Strogin
2014-12-27 7:04 ` SeongJae Park
2014-12-26 14:39 ` [PATCH 2/3] mm: cma: introduce /proc/cmainfo Stefan I. Strogin
2014-12-26 16:02 ` Michal Nazarewicz
2014-12-29 14:09 ` Stefan Strogin
2014-12-29 17:26 ` Michal Nazarewicz
2014-12-31 1:14 ` Gioh Kim
2015-01-23 12:32 ` Stefan Strogin
2014-12-29 21:11 ` Laura Abbott
2015-01-21 14:18 ` Stefan Strogin
2014-12-30 4:38 ` Joonsoo Kim
2015-01-22 15:35 ` Stefan Strogin
2015-01-23 6:35 ` Joonsoo Kim
2014-12-26 14:39 ` [PATCH 3/3] cma: add functions to get region pages counters Stefan I. Strogin
2014-12-26 16:10 ` Michal Nazarewicz
2014-12-27 7:18 ` SeongJae Park
2014-12-29 5:56 ` Safonov Dmitry
2014-12-29 14:12 ` Stefan Strogin
2014-12-30 2:26 ` Joonsoo Kim
2014-12-30 14:41 ` Michal Nazarewicz
2014-12-30 14:46 ` Safonov Dmitry
2014-12-29 2:36 ` [PATCH 0/3] mm: cma: /proc/cmainfo Minchan Kim
2014-12-29 19:52 ` Laura Abbott
2014-12-30 4:47 ` Minchan Kim
2014-12-30 22:00 ` Laura Abbott
2014-12-31 0:25 ` Minchan Kim
2015-01-21 13:52 ` Stefan Strogin
2015-01-23 6:33 ` Joonsoo Kim
2014-12-31 0:58 ` Gioh Kim
2014-12-31 2:18 ` Minchan Kim
2014-12-31 2:45 ` Gioh Kim
2014-12-31 6:47 ` Namhyung Kim
2014-12-31 7:32 ` Minchan Kim
2015-01-09 14:19 ` Steven Rostedt
2015-01-09 14:35 ` Steven Rostedt
2015-01-13 2:27 ` Minchan Kim
2015-01-02 5:11 ` Pavel Machek [this message]
2015-01-22 15:44 ` Stefan Strogin
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