From: Ganapatrao Kulkarni <ganapatrao.kulka...@cavium.com> Change function __iommu_dma_alloc_pages() to allocate pages for DMA from respective device NUMA node. The ternary operator which would be for alloc_pages_node() is tidied along with this.
We also include a change to use kvzalloc() for kzalloc()/vzalloc() combination. Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulka...@cavium.com> [JPG: Added kvzalloc(), drop pages ** being device local, tidied ternary operator] Signed-off-by: John Garry <john.ga...@huawei.com> diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index d1b0475..4afb1a8 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -449,20 +449,17 @@ static void __iommu_dma_free_pages(struct page **pages, int count) kvfree(pages); } -static struct page **__iommu_dma_alloc_pages(unsigned int count, - unsigned long order_mask, gfp_t gfp) +static struct page **__iommu_dma_alloc_pages(struct device *dev, + unsigned int count, unsigned long order_mask, gfp_t gfp) { struct page **pages; - unsigned int i = 0, array_size = count * sizeof(*pages); + unsigned int i = 0, nid = dev_to_node(dev); order_mask &= (2U << MAX_ORDER) - 1; if (!order_mask) return NULL; - if (array_size <= PAGE_SIZE) - pages = kzalloc(array_size, GFP_KERNEL); - else - pages = vzalloc(array_size); + pages = kvzalloc(count * sizeof(*pages), GFP_KERNEL); if (!pages) return NULL; @@ -481,10 +478,12 @@ static struct page **__iommu_dma_alloc_pages(unsigned int count, for (order_mask &= (2U << __fls(count)) - 1; order_mask; order_mask &= ~order_size) { unsigned int order = __fls(order_mask); + gfp_t alloc_flags = gfp; order_size = 1U << order; - page = alloc_pages((order_mask - order_size) ? - gfp | __GFP_NORETRY : gfp, order); + if (order_mask > order_size) + alloc_flags |= __GFP_NORETRY; + page = alloc_pages_node(nid, alloc_flags, order); if (!page) continue; if (!order) @@ -569,7 +568,8 @@ struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp, alloc_sizes = min_size; count = PAGE_ALIGN(size) >> PAGE_SHIFT; - pages = __iommu_dma_alloc_pages(count, alloc_sizes >> PAGE_SHIFT, gfp); + pages = __iommu_dma_alloc_pages(dev, count, alloc_sizes >> PAGE_SHIFT, + gfp); if (!pages) return NULL; -- 1.9.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu