linux-kernel - Re: [PATCH] dmaengine: omap-dma: Enable burst and data pack for SG

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Date:   Sat, 1 Oct 2016 11:35:45 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     Peter Ujfalusi <peter.ujfalusi@...com>
Cc:     dan.j.williams@...el.com, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, tony@...mide.com,
        linux@...linux.org.uk, misael.lopez@...com
Subject: Re: [PATCH] dmaengine: omap-dma: Enable burst and data pack for SG

On Fri, Sep 16, 2016 at 01:53:15PM +0300, Peter Ujfalusi wrote:
> From: Misael Lopez Cruz <misael.lopez@...com>
> 
> Enable the burst and data pack modes for the scatter-gather
> in order to improve the throughput of the data transfers.
> 
> The improvement has been verified with MMC HS200 mode in
> the DRA72 EVM using the iozone tool to compare the read
> throughput (in kB/s) with and without burst/pack for
> different reclens (in kB).
> 
>                               With
>     reclen    Baseline   sDMA burst/pack
>     ------    --------   ---------------
>        64       46568         50820
>       128       57564         63413
>       256       65634         74937
>       512       72427         83483
>      1024       74563         84504
>      2048       76265         86079
>      4096       78045         87335
>      8192       78989         88154
>     16384       81265         91034

Applied, thanks

-- 
~Vinod