From patchwork Mon Feb 24 16:30:04 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 22445 Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.72) (envelope-from ) id 1WHyR8-0005OT-Jn; Mon, 24 Feb 2014 17:31:22 +0100 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.72/mailfrontend-7) with esmtp id 1WHyR6-0006Sy-1h; Mon, 24 Feb 2014 17:31:22 +0100 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753691AbaBXQaM (ORCPT + 1 other); Mon, 24 Feb 2014 11:30:12 -0500 Received: from adelie.canonical.com ([91.189.90.139]:52522 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753231AbaBXQaK (ORCPT ); Mon, 24 Feb 2014 11:30:10 -0500 Received: from lillypilly.canonical.com ([91.189.89.62]) by adelie.canonical.com with esmtp (Exim 4.71 #1 (Debian)) id 1WHyPu-0007a6-0L; Mon, 24 Feb 2014 16:30:06 +0000 Received: by lillypilly.canonical.com (Postfix, from userid 3489) id F22AB26C274D; Mon, 24 Feb 2014 16:30:05 +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, 24 Feb 2014 17:30:04 +0100 Message-ID: <20140224163001.20485.26677.stgit@patser> In-Reply-To: <20140224162607.20485.70967.stgit@patser> References: <20140224162607.20485.70967.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-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2014.2.24.162414 X-PMX-Spam: Gauge=IIIIIIIII, Probability=9%, Report=' MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, MSGID_ADDED_BY_MTA 0.05, BODYTEXTP_SIZE_3000_LESS 0, BODY_SIZE_1700_1799 0, BODY_SIZE_2000_LESS 0, BODY_SIZE_5000_LESS 0, BODY_SIZE_7000_LESS 0, INVALID_MSGID_NO_FQDN 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __CP_URI_IN_BODY 0, __CT 0, __CTE 0, __CT_TEXT_PLAIN 0, __FRAUD_BODY_WEBMAIL 0, __FRAUD_WEBMAIL 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILING_LIST 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MIME_VERSION 0, __MULTIPLE_RCPTS_CC_X2 0, __SANE_MSGID 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_NO_WWW 0, __URI_NS , __USER_AGENT 0' Signed-off-by: Maarten Lankhorst Reviewed-by: Rob Clark --- include/linux/reservation.h | 20 +++++++++++++++++++- 1 file changed, 19 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..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); }