[patch 3/4] intr_remap: Allocate intr-remapping table using numa locality info

From: Suresh Siddha
Date: Thu Oct 01 2009 - 20:20:35 EST


Allocate intr-remapping table using numa locality info. On platforms
having remapping hardware units span different nodes, this enables
optimized intr-remapping table entry access by remapping hardware.

Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
---
drivers/pci/intr_remapping.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

Index: tip/drivers/pci/intr_remapping.c
===================================================================
--- tip.orig/drivers/pci/intr_remapping.c
+++ tip/drivers/pci/intr_remapping.c
@@ -590,7 +590,8 @@ static int setup_intr_remapping(struct i
if (!iommu->ir_table)
return -ENOMEM;

- pages = alloc_pages(GFP_ATOMIC | __GFP_ZERO, INTR_REMAP_PAGE_ORDER);
+ pages = alloc_pages_node(iommu->node, GFP_ATOMIC | __GFP_ZERO,
+ INTR_REMAP_PAGE_ORDER);

if (!pages) {
printk(KERN_ERR "failed to allocate pages of order %d\n",


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