From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754036AbaHLSMs (ORCPT ); Tue, 12 Aug 2014 14:12:48 -0400 Received: from void.printf.net ([89.145.121.20]:47859 "EHLO void.printf.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753895AbaHLSMr (ORCPT ); Tue, 12 Aug 2014 14:12:47 -0400 From: Chris Ball To: Apelete Seketeli Cc: Ulf Hansson , H Hartley Sweeten , Lars-Peter Clausen , Wei Yongjun , Alex Smith , Laurent Pinchart , linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 2/2] mmc: jz4740: prepare next dma transfer in parallel with current transfer References: <1405917465-18185-1-git-send-email-apelete@seketeli.net> <1405917465-18185-3-git-send-email-apelete@seketeli.net> Date: Tue, 12 Aug 2014 19:12:33 +0100 In-Reply-To: <1405917465-18185-3-git-send-email-apelete@seketeli.net> (Apelete Seketeli's message of "Mon, 21 Jul 2014 06:37:45 +0200") Message-ID: <86y4ut60ha.fsf@void.printf.net> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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