[PATCH 2/4] numa, iommu/io-pgtable-arm: Use NUMA aware memory allocation for smmu translation tables
From: robin.murphy@arm.com (Robin Murphy)
Date: 2017-09-21 11:11:28
Also in:
linux-iommu, linux-mm, lkml
On 21/09/17 09:59, Ganapatrao Kulkarni wrote:
function __arm_lpae_alloc_pages is used to allcoated memory for smmu translation tables. updating function to allocate memory/pages from the proximity domain of SMMU device.
AFAICS, data->pgd_size always works out to a power-of-two number of pages, so I'm not sure why we've ever needed alloc_pages_exact() here. I think we could simply use alloc_pages_node() and drop patch #1. Robin.
quoted hunk ↗ jump to hunk
Signed-off-by: Ganapatrao Kulkarni <redacted> --- drivers/iommu/io-pgtable-arm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index e8018a3..f6d01f6 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c@@ -215,8 +215,10 @@ static void *__arm_lpae_alloc_pages(size_t size, gfp_t gfp, { struct device *dev = cfg->iommu_dev; dma_addr_t dma; - void *pages = alloc_pages_exact(size, gfp | __GFP_ZERO); + void *pages; + pages = alloc_pages_exact_nid(dev_to_node(dev), size, + gfp | __GFP_ZERO); if (!pages) return NULL;