linux-kernel - Re: [PATCH 0/2] dmaengine: Add scatter-gathered memset support

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Message-ID: <20150717062220.GH14886@odux.rfo.atmel.com>
Date:	Fri, 17 Jul 2015 08:22:20 +0200
From:	Ludovic Desroches <ludovic.desroches@...el.com>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
CC:	Vinod Koul <vinod.koul@...el.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Ludovic Desroches <ludovic.desroches@...el.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	<dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 0/2] dmaengine: Add scatter-gathered memset support

On Mon, Jul 06, 2015 at 12:19:22PM +0200, Maxime Ripard wrote:
> Hi Vinod,
> 
> Here is a patch serie that adds a new dmaengine operation for
> scatter-gathered memset.
> 
> Indeed, doing a memset over a discontiguous buffer is quite
> inefficient at the moment, since you have to create and submit each
> chunk separately, which might result in a huge list of transfers,
> while some controllers can handle that just fine.
> 
> Let me know what you think,
> Maxime
> 
> Maxime Ripard (2):
>   dmaengine: Add scatter-gathered memset
>   dmaengine: xdmac: Add scatter gathered memset support
> 

I have forgotten to add it but of course:

Acked-by: Ludovic Desroches <ludovic.desroches@...el.com>

Thanks

>  drivers/dma/at_xdmac.c    | 166 +++++++++++++++++++++++++++++++++++++++++++++-
>  include/linux/dmaengine.h |   5 ++
>  2 files changed, 170 insertions(+), 1 deletion(-)
> 
> -- 
> 2.4.5
> 
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