Kernel - My Linux kernel repository

Age	Commit message (Collapse)	Author
2009-08-10	dma-ops: Remove flush_write_buffers() in dma-mapping-common.h	Arnd Bergmann
	This moves flush_write_buffers() in asm-generic/dma-mapping-common.h to arch/x86/kernel/pci-nommu.c. The purpose of this patch is that, we can avoid defining NULL flush_write_buffers() on IA64 and SPARC. dma-mapping-common.h is used by X86 and IA64 (and SPARC soon) but only X86 with CONFIG_X86_OOSTORE or CONFIG_X86_PPRO_FENCE actually uses flush_write_buffers(). CONFIG_X86_OOSTORE or CONFIG_X86_PPRO_FENCE is usable with only kernel/pci-nommu.c (that is, not usable with other X86 IOMMU implementations such as SWIOTLB, VT-d, etc) so we can safely move flush_write_buffers() in asm-generic/dma-mapping-common.h to arch/x86/kernel/pci-nommu.c. The further discussion is: http://lkml.org/lkml/2009/6/28/104 Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: davem@davemloft.net Cc: tony.luck@intel.com Cc: fenghua.yu@intel.com LKML-Reference: <1249872797-1314-2-git-send-email-fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-18	dma-mapping: add asm-generic/dma-mapping-common.h	FUJITA Tomonori
	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-common.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 patch: This header file provides some mapping function definitions that the users of struct dma_map_ops can use. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>