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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
arch/powerpc/kernel/pci_iommu.c
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@@ -86,7 +86,8 @@ static void *pci_iommu_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
return iommu_alloc_coherent(device_to_table(hwdev), size, dma_handle,
device_to_mask(hwdev), flag);
device_to_mask(hwdev), flag,
pcibus_to_node(to_pci_dev(hwdev)->bus));
}
static void pci_iommu_free_coherent(struct device *hwdev, size_t size,