From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752682Ab3ABJiw (ORCPT ); Wed, 2 Jan 2013 04:38:52 -0500 Received: from hqemgate04.nvidia.com ([216.228.121.35]:17379 "EHLO hqemgate04.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752389Ab3ABJiv convert rfc822-to-8bit (ORCPT ); Wed, 2 Jan 2013 04:38:51 -0500 X-PGP-Universal: processed; by hqnvupgp06.nvidia.com on Wed, 02 Jan 2013 01:36:10 -0800 Message-ID: <50E40157.9070902@nvidia.com> Date: Wed, 2 Jan 2013 11:43:51 +0200 From: =?ISO-8859-1?Q?Terje_Bergstr=F6m?= User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Mark Zhang CC: "thierry.reding@avionic-design.de" , "airlied@linux.ie" , "dev@lynxeye.de" , "dri-devel@lists.freedesktop.org" , "linux-tegra@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCHv4 3/8] gpu: host1x: Add channel support References: <1356089964-5265-1-git-send-email-tbergstrom@nvidia.com> <1356089964-5265-4-git-send-email-tbergstrom@nvidia.com> <50E3E45A.5050003@gmail.com> <50E3FE8C.8000309@nvidia.com> <50E3FE57.5070702@gmail.com> In-Reply-To: <50E3FE57.5070702@gmail.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02.01.2013 11:31, Mark Zhang wrote: > On 01/02/2013 05:31 PM, Terje Bergström wrote: >> That's intentional. Writing a job to channel is atomic, so lock is taken >> from host1x_cdma_begin() until host1x_cdma_end(). >> > > Okay. So can we consider that lock and unlock this mutex in the function > which calls host1x_cdma_begin and host1x_cdma_end, that means, in > current implementation, function "channel_submit"? Yes, exactly. Terje