Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756877AbbGQGVf (ORCPT ); Fri, 17 Jul 2015 02:21:35 -0400 Received: from eusmtp01.atmel.com ([212.144.249.243]:33382 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751343AbbGQGVc (ORCPT ); Fri, 17 Jul 2015 02:21:32 -0400 Date: Fri, 17 Jul 2015 08:22:20 +0200 From: Ludovic Desroches To: Maxime Ripard CC: Vinod Koul , Nicolas Ferre , Alexandre Belloni , Ludovic Desroches , Thomas Petazzoni , Boris Brezillon , , , Subject: Re: [PATCH 0/2] dmaengine: Add scatter-gathered memset support Message-ID: <20150717062220.GH14886@odux.rfo.atmel.com> Mail-Followup-To: Maxime Ripard , Vinod Koul , Nicolas Ferre , Alexandre Belloni , Thomas Petazzoni , Boris Brezillon , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <1436177964-19380-1-git-send-email-maxime.ripard@free-electrons.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <1436177964-19380-1-git-send-email-maxime.ripard@free-electrons.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1143 Lines: 37 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 Thanks > drivers/dma/at_xdmac.c | 166 +++++++++++++++++++++++++++++++++++++++++++++- > include/linux/dmaengine.h | 5 ++ > 2 files changed, 170 insertions(+), 1 deletion(-) > > -- > 2.4.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/