linux-kernel - Re: [PATCH v2] mm: dmapool: use provided gfp flags for all dma_alloc

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Message-ID: <50F800EB.6040104@web.de>
Date:	Thu, 17 Jan 2013 14:47:23 +0100
From:	Soeren Moch <smoch@....de>
To:	Arnd Bergmann <arnd@...db.de>
CC:	Jason Cooper <jason@...edaemon.net>,
	Greg KH <gregkh@...uxfoundation.org>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Andrew Lunn <andrew@...n.ch>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	linux-kernel@...r.kernel.org, Michal Hocko <mhocko@...e.cz>,
	linux-mm@...ck.org, Kyungmin Park <kyungmin.park@...sung.com>,
	Mel Gorman <mgorman@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	linaro-mm-sig@...ts.linaro.org,
	linux-arm-kernel@...ts.infradead.org,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
Subject: Re: [PATCH v2] mm: dmapool: use provided gfp flags for all dma_alloc_coherent()
 calls

On 17.01.2013 11:49, Arnd Bergmann wrote:
> On Wednesday 16 January 2013, Soeren Moch wrote:
>>>> I will see what I can do here. Is there an easy way to track the buffer
>>>> usage without having to wait for complete exhaustion?
>>>
>>> DMA_API_DEBUG
>>
>> OK, maybe I can try this.
>>>
>
> Any success with this? It should at least tell you if there is a
> memory leak in one of the drivers.

Not yet, sorry. I have to do all the tests in my limited spare time.
Can you tell me what to search for in the debug output?

Soeren
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