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[PATCH] powerpc: node-aware dma allocations

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Make sure dma_alloc_coherent allocates memory from the local node.  This
is important on Cell where we avoid going through the slow cpu
interconnect.

Note:  I could only test this patch on Cell, it should be verified on
some pseries machine by those that have the hardware.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Christoph Hellwig
2006-06-06 16:11:35 +02:00
committed by Paul Mackerras
parent 318facbee0
commit 8eb6c6e3b9
4 changed files with 13 additions and 9 deletions
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3
include/asm-powerpc/iommu.h
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@@ -76,7 +76,8 @@ extern void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
int nelems, enum dma_data_direction direction);
extern void *iommu_alloc_coherent(struct iommu_table *tbl, size_t size,
dma_addr_t *dma_handle, unsigned long mask, gfp_t flag);
dma_addr_t *dma_handle, unsigned long mask,
gfp_t flag, int node);
extern void iommu_free_coherent(struct iommu_table *tbl, size_t size,
void *vaddr, dma_addr_t dma_handle);
extern dma_addr_t iommu_map_single(struct iommu_table *tbl, void *vaddr,