Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755511AbaGPIVU (ORCPT ); Wed, 16 Jul 2014 04:21:20 -0400 Received: from mail-ie0-f170.google.com ([209.85.223.170]:40397 "EHLO mail-ie0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750754AbaGPIVP (ORCPT ); Wed, 16 Jul 2014 04:21:15 -0400 MIME-Version: 1.0 X-Originating-IP: [84.73.67.144] In-Reply-To: References: <20140710222423.GA14219@gmail.com> <019CCE693E457142B37B791721487FD91809E4C2@storexdag01.amd.com> <20140711211850.GU1870@gmail.com> <019CCE693E457142B37B791721487FD9180A193B@storexdag01.amd.com> <20140713035535.GB5301@gmail.com> <20140713164901.GB10624@gmail.com> <53C396D3.9000600@vodafone.de> <20140715173704.GA3421@gmail.com> Date: Wed, 16 Jul 2014 10:21:14 +0200 X-Google-Sender-Auth: AB4mR76UF-tGUcHdYFpJ6jsfyTc Message-ID: Subject: Re: [PATCH 00/83] AMD HSA kernel driver From: Daniel Vetter To: "Bridgman, John" Cc: Jerome Glisse , "Lewycky, Andrew" , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "Deucher, Alexander" , "akpm@linux-foundation.org" , Greg KH , Maarten Lankhorst , "linaro-mm-sig@lists.linaro.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 15, 2014 at 7:53 PM, Bridgman, John wrote: [snip away the discussion about hsa device discover, I'm hijacking this thread just for the event/fence stuff here.] > ... There's an event mechanism still to come - mostly for communicating fences and shader interrupts back to userspace, but also used for "device change" notifications, so no polling of sysfs. That could would be interesting. On i915 my plan is to internally use the recently added struct fence from Maarten. For the external interface for userspace that wants explicit control over fences I'm leaning towards polishing the android syncpt stuff (currently in staging). But in any case I _really_ want to avoid that we end up with multiple different and incompatible explicit fencing interfaces on linux. Adding relevant people. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch -- 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/