linux-kernel - Re: [PATCH -tip 0/5] add generic dma-mappig.h

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Date:	Thu, 7 May 2009 15:38:06 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, tony.luck@...el.com,
	linux-ia64@...r.kernel.org
Subject: Re: [PATCH -tip 0/5] add generic dma-mappig.h

On Thu, May 07, 2009 at 01:35:43PM +0900, FUJITA Tomonori wrote:
> We unified x86 and IA64's handling of multiple dma mapping operations
> (struct dma_map_ops in linux/dma-mapping.h) so we can remove
> duplication in their arch/include/asm/dma-mapping.h.
> 
> This patchset adds include/asm-generic/dma-mapping.h that provides
> some generic dma mapping function definitions for the users of struct
> dma_map_ops. This enables us to remove about 100 lines. This also
> enables us to easily add CONFIG_DMA_API_DEBUG support, which only x86
> supports for now. The 4th patch adds CONFIG_DMA_API_DEBUG support to
> IA64 by adding only 8 lines.
> 
> This is against tip/master since tip has some changes to
> arch/x86/include/asm/dma-mapping.h.
> 
> =
>  arch/ia64/Kconfig                   |    1 +
>  arch/ia64/include/asm/dma-mapping.h |  110 ++------------------
>  arch/x86/Kconfig                    |    1 +
>  arch/x86/include/asm/dma-mapping.h  |  174 +-------------------------------
>  include/asm-generic/dma-mapping.h   |  190 +++++++++++++++++++++++++++++++++++
>  lib/dma-debug.c                     |   82 +++++++++------
>  6 files changed, 252 insertions(+), 306 deletions(-)

Patchset looks good to me. As a follow-up work we should try to unify
the *_coherent functions too.

Acked-by: Joerg Roedel <joerg.roedel@....com>
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