From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756655AbcCWSrt (ORCPT ); Wed, 23 Mar 2016 14:47:49 -0400 Received: from mail-yw0-f175.google.com ([209.85.161.175]:33827 "EHLO mail-yw0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756046AbcCWSrq (ORCPT ); Wed, 23 Mar 2016 14:47:46 -0400 From: Gustavo Padovan To: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, Daniel Stone , =?UTF-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= , Riley Andrews , Daniel Vetter , Rob Clark , Greg Hackmann , John Harrison , Maarten Lankhorst , Gustavo Padovan Subject: [RFC 5/6] dma-buf/fence: add fence_collection_wait() Date: Wed, 23 Mar 2016 15:47:26 -0300 Message-Id: <1458758847-21170-6-git-send-email-gustavo@padovan.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1458758847-21170-1-git-send-email-gustavo@padovan.org> References: <1458758847-21170-1-git-send-email-gustavo@padovan.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Gustavo Padovan Iterate over the array of fences and wait for all of the to finish. Signed-off-by: Gustavo Padovan --- drivers/dma-buf/fence.c | 16 ++++++++++++++++ include/linux/fence.h | 1 + 2 files changed, 17 insertions(+) diff --git a/drivers/dma-buf/fence.c b/drivers/dma-buf/fence.c index a3fe3e7..31e554b 100644 --- a/drivers/dma-buf/fence.c +++ b/drivers/dma-buf/fence.c @@ -532,6 +532,22 @@ fence_init(struct fence *fence, const struct fence_ops *ops, EXPORT_SYMBOL(fence_init); /** + * fence_collection_wait - Wait for collection of fences to signal + * @collection: [in] the collection to wait on + * + * This functions simplifies the waiting process when one needs to + * wait for many fences at the same time. + */ +void fence_collection_wait(struct fence_collection *collection) +{ + int i; + + for (i = 0 ; i < collection->num_fences ; i++) + fence_wait(collection->fences[i], false); +} +EXPORT_SYMBOL(fence_collection_wait); + +/** * fence_collection_put - put all the fences in a collection * @collection: [in] the collection to put fences * diff --git a/include/linux/fence.h b/include/linux/fence.h index 3f871b0..52f1aea 100644 --- a/include/linux/fence.h +++ b/include/linux/fence.h @@ -244,6 +244,7 @@ int fence_add_callback(struct fence *fence, struct fence_cb *cb, bool fence_remove_callback(struct fence *fence, struct fence_cb *cb); void fence_enable_sw_signaling(struct fence *fence); +void fence_collection_wait(struct fence_collection *collection); void fence_collection_put(struct fence_collection *collection); /** -- 2.5.0