From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mailout3.w1.samsung.com ([210.118.77.13]:60215 "EHLO mailout3.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750822Ab1HBJsN (ORCPT ); Tue, 2 Aug 2011 05:48:13 -0400 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=UTF-8; format=flowed Received: from spt2.w1.samsung.com ([210.118.77.13]) by mailout3.w1.samsung.com (Sun Java(tm) System Messaging Server 6.3-8.04 (built Jul 29 2009; 32bit)) with ESMTP id <0LPA003SDOKBTO30@mailout3.w1.samsung.com> for linux-media@vger.kernel.org; Tue, 02 Aug 2011 10:48:11 +0100 (BST) Received: from [127.0.0.1] ([106.10.22.139]) by spt2.w1.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTPA id <0LPA009AROK6EP@spt2.w1.samsung.com> for linux-media@vger.kernel.org; Tue, 02 Aug 2011 10:48:11 +0100 (BST) Date: Tue, 02 Aug 2011 11:48:07 +0200 From: Marek Szyprowski Subject: Buffer sharing proof-of-concept To: linaro-mm-sig@lists.linaro.org, linux-media@vger.kernel.org Cc: Tomasz Stanislawski , Kyungmin Park , Marek Szyprowski Message-id: <4E37C7D7.40301@samsung.com> Sender: linux-media-owner@vger.kernel.org List-ID: Hello Everyone, This patchset introduces the proof-of-concept infrastructure for buffer sharing between multiple devices using file descriptors. The infrastructure has been integrated with V4L2 framework, more specifically videobuf2 and two S5P drivers FIMC (capture interface) and TV drivers, but it can be easily used by other kernel subsystems, like DRI. In this patch the buffer object has been simplified to absolute minimum - it contains only the buffer physical address (only physically contiguous buffers are supported), but this can be easily extended to complete scatter list in the future. Best regards -- Marek Szyprowski Samsung Poland R&D Center