From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailout4.w1.samsung.com (mailout4.w1.samsung.com [210.118.77.14]) by ozlabs.org (Postfix) with ESMTP id CC84EB6FF1 for ; Thu, 29 Mar 2012 01:38:49 +1100 (EST) MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Received: from euspt2 ([210.118.77.14]) by mailout4.w1.samsung.com (Sun Java(tm) System Messaging Server 6.3-8.04 (built Jul 29 2009; 32bit)) with ESMTP id <0M1L00IEMNCPQ270@mailout4.w1.samsung.com> for linuxppc-dev@lists.ozlabs.org; Wed, 28 Mar 2012 15:38:49 +0100 (BST) Received: from linux.samsung.com ([106.116.38.10]) by spt2.w1.samsung.com (iPlanet Messaging Server 5.2 Patch 2 (built Jul 14 2004)) with ESMTPA id <0M1L00KDSNCIKQ@spt2.w1.samsung.com> for linuxppc-dev@lists.ozlabs.org; Wed, 28 Mar 2012 15:38:43 +0100 (BST) Date: Wed, 28 Mar 2012 16:38:40 +0200 From: Marek Szyprowski Subject: RE: [PATCHv2 01/14] common: dma-mapping: introduce alloc_attrs and free_attrs methods In-reply-to: <4F72F603.2000803@mvista.com> To: 'Sergei Shtylyov' Message-id: <016001cd0cf0$7807bdb0$68173910$%szyprowski@samsung.com> References: <1332855768-32583-1-git-send-email-m.szyprowski@samsung.com> <1332855768-32583-2-git-send-email-m.szyprowski@samsung.com> <4F72F603.2000803@mvista.com> Cc: linux-mips@linux-mips.org, 'Kevin Cernekee' , linux-ia64@vger.kernel.org, linux-sh@vger.kernel.org, linux-mm@kvack.org, sparclinux@vger.kernel.org, 'Guan Xuetao' , linux-arch@vger.kernel.org, 'Stephen Rothwell' , 'Jonathan Corbet' , x86@kernel.org, 'Matt Turner' , 'Dezhong Diao' , 'Fenghua Yu' , 'Arnd Bergmann' , microblaze-uclinux@itee.uq.edu.au, linaro-mm-sig@lists.linaro.org, 'Ivan Kokshaysky' , Andrzej Pietrasiewicz , 'Thomas Gleixner' , linux-arm-kernel@lists.infradead.org, 'Richard Henderson' , discuss@x86-64.org, 'Michal Simek' , 'Tony Luck' , linux-kernel@vger.kernel.org, 'Richard Kuo' , 'FUJITA Tomonori' , 'Kyungmin Park' , 'Paul Mundt' , linux-alpha@vger.kernel.org, 'Andrew Morton' , linuxppc-dev@lists.ozlabs.org, "'David S. Miller'" List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi Sergei, On Wednesday, March 28, 2012 1:29 PM Sergei Shtylyov wrote: > On 27-03-2012 17:42, Marek Szyprowski wrote: > > > Introduce new generic alloc and free methods with attributes argument. > > The method names don't match the ones in the subject. Right, I will reword the subject to "common: dma-mapping: introduce generic alloc() and free() methods". > > Existing alloc_coherent and free_coherent can be implemented on top of the > > new calls with NULL attributes argument. Later also dma_alloc_non_coherent > > can be implemented using DMA_ATTR_NONCOHERENT attribute as well as > > dma_alloc_writecombine with separate DMA_ATTR_WRITECOMBINE attribute. > > > This way the drivers will get more generic, platform independent way of > > allocating dma buffers with specific parameters. > > > Signed-off-by: Marek Szyprowski > > Acked-by: Kyungmin Park > > Reviewed-by: David Gibson > > Reviewed-by: Arnd Bergmann > Best regards -- Marek Szyprowski Samsung Poland R&D Center