From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757781AbcCCP3b (ORCPT ); Thu, 3 Mar 2016 10:29:31 -0500 Received: from mga03.intel.com ([134.134.136.65]:48624 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751658AbcCCP33 (ORCPT ); Thu, 3 Mar 2016 10:29:29 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,532,1449561600"; d="scan'208";a="900435589" Date: Thu, 3 Mar 2016 21:03:23 +0530 From: Vinod Koul To: Kedareswara rao Appana Cc: dan.j.williams@intel.com, michal.simek@xilinx.com, soren.brinkmann@xilinx.com, appanad@xilinx.com, moritz.fischer@ettus.com, laurent.pinchart@ideasonboard.com, luis@debethencourt.com, anirudh@xilinx.com, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 1/4] dmaengine: xilinx_vdma: Improve SG engine handling Message-ID: <20160303153323.GN11154@localhost> References: <1456495434-11722-1-git-send-email-appanad@xilinx.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1456495434-11722-1-git-send-email-appanad@xilinx.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 26, 2016 at 07:33:51PM +0530, Kedareswara rao Appana wrote: > The current driver allows user to queue up multiple segments > on to a single transaction descriptor. User will submit this single desc > and in the issue_pending() we decode multiple segments and submit to SG HW engine. > We free up the allocated_desc when it is submitted to the HW. > > Existing code prevents the user to prepare multiple trasactions at same time as > we are overwrite with the allocated_desc. > > The best utilization of HW SG engine would happen if we collate the pending > list when we start dma this patch updates the same. Applied all. It is usually advisable to do cover letter using --cover-letter for multi patch series -- ~Vinod From mboxrd@z Thu Jan 1 00:00:00 1970 From: vinod.koul@intel.com (Vinod Koul) Date: Thu, 3 Mar 2016 21:03:23 +0530 Subject: [PATCH v3 1/4] dmaengine: xilinx_vdma: Improve SG engine handling In-Reply-To: <1456495434-11722-1-git-send-email-appanad@xilinx.com> References: <1456495434-11722-1-git-send-email-appanad@xilinx.com> Message-ID: <20160303153323.GN11154@localhost> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Feb 26, 2016 at 07:33:51PM +0530, Kedareswara rao Appana wrote: > The current driver allows user to queue up multiple segments > on to a single transaction descriptor. User will submit this single desc > and in the issue_pending() we decode multiple segments and submit to SG HW engine. > We free up the allocated_desc when it is submitted to the HW. > > Existing code prevents the user to prepare multiple trasactions at same time as > we are overwrite with the allocated_desc. > > The best utilization of HW SG engine would happen if we collate the pending > list when we start dma this patch updates the same. Applied all. It is usually advisable to do cover letter using --cover-letter for multi patch series -- ~Vinod