linux-kernel - Re: [PATCH v6 2/2] mmc: jz4740: prepare next dma transfer in parallel with current transfer

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Message-ID: <86y4ut60ha.fsf@void.printf.net>
Date:	Tue, 12 Aug 2014 19:12:33 +0100
From:	Chris Ball <chris@...ntf.net>
To:	Apelete Seketeli <apelete@...eteli.net>
Cc:	Ulf Hansson <ulf.hansson@...aro.org>,
	H Hartley Sweeten <hsweeten@...ionengravers.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>,
	Alex Smith <alex.smith@...tec.com>,
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 2/2] mmc: jz4740: prepare next dma transfer in parallel with current transfer

Hi Apelete,

On Mon, Jul 21 2014, Apelete Seketeli wrote:
> It should help reduce the impact of DMA preparation overhead on the SD
> card performance.

Did you do any benchmarking to check that this is true?  (If so, it'd
be good to note what performance change you saw in the commit message.)

Thanks!

- Chris.
-- 
Chris Ball   <http://printf.net/>
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