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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2006-11-11 17:25:16 +1100
committerPaul Mackerras <paulus@samba.org>2006-12-04 20:38:59 +1100
commitc80d9133e99de1af607314107910a2a1645efb17 (patch)
tree9243a3ce3feba1379857150548d3975918ac0640
parent92b20c40dcca2d441f367da57e7665cce15c492a (diff)
[POWERPC] Make direct DMA use node local allocations
This patch makes dma_alloc_coherent() use node local allocation when using the direct DMA ops. The node is obtained from the new device extension. If no such extension is present, the current node is used. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/kernel/dma_64.c14
1 files changed, 9 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/dma_64.c b/arch/powerpc/kernel/dma_64.c
index 1d1dc76606a..7b0e754383c 100644
--- a/arch/powerpc/kernel/dma_64.c
+++ b/arch/powerpc/kernel/dma_64.c
@@ -120,14 +120,18 @@ unsigned long dma_direct_offset;
static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag)
{
+ struct page *page;
void *ret;
+ int node = dev->archdata.numa_node;
/* TODO: Maybe use the numa node here too ? */
- ret = (void *)__get_free_pages(flag, get_order(size));
- if (ret != NULL) {
- memset(ret, 0, size);
- *dma_handle = virt_to_abs(ret) | dma_direct_offset;
- }
+ page = alloc_pages_node(node, flag, get_order(size));
+ if (page == NULL)
+ return NULL;
+ ret = page_address(page);
+ memset(ret, 0, size);
+ *dma_handle = virt_to_abs(ret) | dma_direct_offset;
+
return ret;
}