From patchwork Mon Feb 17 15:58:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 3663811 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A6FEEBF13A for ; Mon, 17 Feb 2014 16:01:34 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DF81F201F7 for ; Mon, 17 Feb 2014 16:01:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0BE86201F5 for ; Mon, 17 Feb 2014 16:01:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752946AbaBQP6b (ORCPT ); Mon, 17 Feb 2014 10:58:31 -0500 Received: from adelie.canonical.com ([91.189.90.139]:49641 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750838AbaBQP6a (ORCPT ); Mon, 17 Feb 2014 10:58:30 -0500 Received: from lillypilly.canonical.com ([91.189.89.62]) by adelie.canonical.com with esmtp (Exim 4.71 #1 (Debian)) id 1WFQaR-0001y5-F4; Mon, 17 Feb 2014 15:58:27 +0000 Received: by lillypilly.canonical.com (Postfix, from userid 3489) id 6904B26C26CA; Mon, 17 Feb 2014 15:58:27 +0000 (UTC) Subject: [PATCH 5/6] reservation: add support for fences to enable cross-device synchronisation To: linux-kernel@vger.kernel.org From: Maarten Lankhorst Cc: linux-arch@vger.kernel.org, ccross@google.com, linaro-mm-sig@lists.linaro.org, robdclark@gmail.com, dri-devel@lists.freedesktop.org, daniel@ffwll.ch, sumit.semwal@linaro.org, linux-media@vger.kernel.org Date: Mon, 17 Feb 2014 16:58:26 +0100 Message-ID: <20140217155725.20337.52848.stgit@patser> In-Reply-To: <20140217155056.20337.25254.stgit@patser> References: <20140217155056.20337.25254.stgit@patser> User-Agent: StGit/0.15 MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Maarten Lankhorst Reviewed-by: Rob Clark --- include/linux/reservation.h | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/include/linux/reservation.h b/include/linux/reservation.h index 813dae960ebd..92c4851b5a39 100644 --- a/include/linux/reservation.h +++ b/include/linux/reservation.h @@ -6,7 +6,7 @@ * Copyright (C) 2012 Texas Instruments * * Authors: - * Rob Clark + * Rob Clark * Maarten Lankhorst * Thomas Hellstrom * @@ -40,22 +40,38 @@ #define _LINUX_RESERVATION_H #include +#include extern struct ww_class reservation_ww_class; struct reservation_object { struct ww_mutex lock; + + struct fence *fence_excl; + struct fence **fence_shared; + u32 fence_shared_count, fence_shared_max; }; static inline void reservation_object_init(struct reservation_object *obj) { ww_mutex_init(&obj->lock, &reservation_ww_class); + + obj->fence_shared_count = obj->fence_shared_max = 0; + obj->fence_shared = NULL; + obj->fence_excl = NULL; } static inline void reservation_object_fini(struct reservation_object *obj) { + int i; + + if (obj->fence_excl) + fence_put(obj->fence_excl); + for (i = 0; i < obj->fence_shared_count; ++i) + fence_put(obj->fence_shared[i]); + ww_mutex_destroy(&obj->lock); }