linux-kernel - Re: [PATCH 1/4] mm: cma: add currently allocated CMA buffers list to debugfs

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Message-id: <54E24428.5070804@partner.samsung.com>
Date:	Mon, 16 Feb 2015 22:25:28 +0300
From:	Stefan Strogin <s.strogin@...tner.samsung.com>
To:	SeongJae Park <sj38.park@...il.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	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>,
	Laura Abbott <lauraa@...eaurora.org>,
	Hui Zhu <zhuhui@...omi.com>, Minchan Kim <minchan@...nel.org>,
	Dyasly Sergey <s.dyasly@...sung.com>,
	Vyacheslav Tyrtov <v.tyrtov@...sung.com>,
	gregory.0xf0@...il.com, sasha.levin@...cle.com, gioh.kim@....com,
	pavel@....cz, stefan.strogin@...il.com
Subject: Re: [PATCH 1/4] mm: cma: add currently allocated CMA buffers list to
 debugfs

Hello SeongJae,

On 13/02/15 17:18, SeongJae Park wrote:
> Hello, Stefan.
> 
> On Fri, 13 Feb 2015, Stefan Strogin wrote:
> 
>> #include <linux/io.h>
>> +#include <linux/list.h>
>> +#include <linux/proc_fs.h>
>> +#include <linux/time.h>
> 
> Looks like `proc_fs.h` and `time.h` are not necessary.
> 

Yes, of course. Thanks.


>> +        pr_warn("%s(page %p, count %d): failed to allocate buffer
>> list entry\n",
>> +            __func__, pfn_to_page(pfn), count);
> 
> pfn_to_page() would cause build failure on x86_64. Why don't you include
> appropriate header file?
> 

Indeed. Because I tested it only on arm and x86. Sorry :( Thank you.

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