From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752446AbaKQQxy (ORCPT ); Mon, 17 Nov 2014 11:53:54 -0500 Received: from cantor2.suse.de ([195.135.220.15]:59477 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751976AbaKQQxw (ORCPT ); Mon, 17 Nov 2014 11:53:52 -0500 Date: Mon, 17 Nov 2014 17:53:48 +0100 From: Joerg Roedel To: Jesse Barnes Cc: Oded Gabbay , linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/2] mm: export find_extend_vma and handle_mm_fault for driver use Message-ID: <20141117165348.GA19712@suse.de> References: <1414179271-7621-1-git-send-email-jbarnes@virtuousgeek.org> <20141027151327.GE9734@suse.de> <544E61A1.7090400@amd.com> <20141027083552.4af5753f@jbarnes-hsw> <5450B472.1020301@amd.com> <20141105120351.GH8354@suse.de> <20141105135109.39ea54fe@jbarnes-hsw> <20141106130122.GJ8354@suse.de> <20141112140741.0ebef398@jbarnes-hsw> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20141112140741.0ebef398@jbarnes-hsw> 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 Wed, Nov 12, 2014 at 02:07:41PM -0800, Jesse Barnes wrote: > I wonder if we need a new "device_task_struct" or > "coprocessor_task_struct" or something to wrap some simple stuff on > non-CPU devices. They could be sub-classed by drivers that needed > additional driver specific data. Yes, I think something like a device_task_struct may be needed at some point. It could be used in some generic code for task scheduling and management on the devices too. The KFD driver already implements a scheduler and stuff, maybe some of this code can be generalized to be useable by other drivers and a common userspace interface (at least to some degree). Joerg