From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maarten Lankhorst Subject: [REPOST PATCH 5/8] reservation: add support for fences to enable cross-device synchronisation Date: Wed, 18 Jun 2014 12:37:17 +0200 Message-ID: <20140618103717.15728.58471.stgit@patser> References: <20140618102957.15728.43525.stgit@patser> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20140618102957.15728.43525.stgit@patser> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: gregkh@linuxfoundation.org Cc: linux-arch@vger.kernel.org, thellstrom@vmware.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, ccross@google.com, linux-media@vger.kernel.org List-Id: linux-arch.vger.kernel.org Signed-off-by: Maarten Lankhorst Reviewed-by: Rob Clark --- include/linux/reservation.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/include/linux/reservation.h b/include/linux/reservation.h index 813dae960ebd..f3f57460a205 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 +40,40 @@ #define _LINUX_RESERVATION_H #include +#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]); + kfree(obj->fence_shared); + ww_mutex_destroy(&obj->lock); } From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from adelie.canonical.com ([91.189.90.139]:41584 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965546AbaFRLHZ (ORCPT ); Wed, 18 Jun 2014 07:07:25 -0400 Subject: [REPOST PATCH 5/8] reservation: add support for fences to enable cross-device synchronisation From: Maarten Lankhorst Date: Wed, 18 Jun 2014 12:37:17 +0200 Message-ID: <20140618103717.15728.58471.stgit@patser> In-Reply-To: <20140618102957.15728.43525.stgit@patser> References: <20140618102957.15728.43525.stgit@patser> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-arch-owner@vger.kernel.org List-ID: To: gregkh@linuxfoundation.org Cc: linux-arch@vger.kernel.org, thellstrom@vmware.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, robdclark@gmail.com, thierry.reding@gmail.com, ccross@google.com, daniel@ffwll.ch, sumit.semwal@linaro.org, linux-media@vger.kernel.org Message-ID: <20140618103717.s2EuXjq6CdX-Uz8TiPHdCa0mZUWsOVkzjnWzzjl4WDM@z> Signed-off-by: Maarten Lankhorst Reviewed-by: Rob Clark --- include/linux/reservation.h | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/include/linux/reservation.h b/include/linux/reservation.h index 813dae960ebd..f3f57460a205 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 +40,40 @@ #define _LINUX_RESERVATION_H #include +#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]); + kfree(obj->fence_shared); + ww_mutex_destroy(&obj->lock); }