Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753141AbaBQP6c (ORCPT ); Mon, 17 Feb 2014 10:58:32 -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 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 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Maarten Lankhorst --- include/linux/reservation.h | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) 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); } -- 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/