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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-09-11 23:08:47 +0900
committerIngo Molnar <mingo@elte.hu>2008-09-14 16:43:58 +0200
commitf10ac8a232496bf9271cfc67c6eea432891f04a6 (patch)
tree54da320913c87df4e634013b841b9063b5082511 /arch/x86/kernel/pci-calgary_64.c
parentbee44f294efd8417f5e68553778a6cc957af1547 (diff)
x86: avoid unnecessary low zone allocation in Calgary's alloc_coherent
x86's common alloc_coherent (dma_alloc_coherent in dma-mapping.h) sets up the gfp flag according to the device dma_mask but Calgary doesn't need it because of virtual mappings. This patch avoids unnecessary low zone allocation. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/pci-calgary_64.c')
-rw-r--r--arch/x86/kernel/pci-calgary_64.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 8415d92853c..fe7695e4caa 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -491,6 +491,8 @@ static void* calgary_alloc_coherent(struct device *dev, size_t size,
npages = size >> PAGE_SHIFT;
order = get_order(size);
+ flag &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
+
/* alloc enough pages (and possibly more) */
ret = (void *)__get_free_pages(flag, order);
if (!ret)