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| author | Arnd Bergmann <arnd@arndb.de> | 2009-08-10 11:53:10 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-08-10 09:34:57 +0200 |
| commit | a8ad568dd8ca122aa8048ea067d3599820d1c1b4 (patch) | |
| tree | 3d8e4674a254f24906c05e0f7be880cf495b39ed /kernel/groups.c | |
| parent | b683d42693c4e92b838117f5c6f7b90bfa1525c9 (diff) | |
| download | op-kernel-dev-a8ad568dd8ca122aa8048ea067d3599820d1c1b4.zip op-kernel-dev-a8ad568dd8ca122aa8048ea067d3599820d1c1b4.tar.gz | |
dma-ops: Remove flush_write_buffers() in dma-mapping-common.h
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>
Diffstat (limited to 'kernel/groups.c')
0 files changed, 0 insertions, 0 deletions
