[PATCH] x86-64: Micro optimization to dma_alloc_coherent node lookup
Use pcibus_to_node directly
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c
index 57f35c6..cf0a031 100644
--- a/arch/x86_64/kernel/pci-gart.c
+++ b/arch/x86_64/kernel/pci-gart.c
@@ -191,11 +191,9 @@
{
struct page *page;
int node;
- if (dev->bus == &pci_bus_type) {
- cpumask_t mask;
- mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
- node = cpu_to_node(first_cpu(mask));
- } else
+ if (dev->bus == &pci_bus_type)
+ node = pcibus_to_node(to_pci_dev(dev)->bus);
+ else
node = numa_node_id();
page = alloc_pages_node(node, gfp, order);
return page ? page_address(page) : NULL;