[PATCH v2 03/23] iommu/pages: Remove __iommu_alloc_pages()/__iommu_free_pages()
From: Jason Gunthorpe <jgg@nvidia.com>
Date: 2025-02-14 17:09:51
Also in:
asahi, linux-iommu, linux-patches, linux-riscv, linux-rockchip, linux-samsung-soc, linux-sunxi, linux-tegra
Subsystem:
iommu subsystem, the rest · Maintainers:
Joerg Roedel, Will Deacon, Linus Torvalds
These were only used by tegra-smmu and leaked the struct page out of the API. Delete them since tega-smmu has been converted to the other APIs. In the process flatten the call tree so we have fewer one line functions calling other one line functions.. iommu_alloc_pages_node() is the real allocator and everything else can just call it directly. Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> --- drivers/iommu/iommu-pages.h | 49 ++++++------------------------------- 1 file changed, 7 insertions(+), 42 deletions(-)
diff --git a/drivers/iommu/iommu-pages.h b/drivers/iommu/iommu-pages.h
index 82ebf00330811c..0ca2437989a0e1 100644
--- a/drivers/iommu/iommu-pages.h
+++ b/drivers/iommu/iommu-pages.h@@ -46,40 +46,6 @@ static inline void __iommu_free_account(struct page *page, int order) mod_lruvec_page_state(page, NR_SECONDARY_PAGETABLE, -pgcnt); } -/** - * __iommu_alloc_pages - allocate a zeroed page of a given order. - * @gfp: buddy allocator flags - * @order: page order - * - * returns the head struct page of the allocated page. - */ -static inline struct page *__iommu_alloc_pages(gfp_t gfp, int order) -{ - struct page *page; - - page = alloc_pages(gfp | __GFP_ZERO, order); - if (unlikely(!page)) - return NULL; - - __iommu_alloc_account(page, order); - - return page; -} - -/** - * __iommu_free_pages - free page of a given order - * @page: head struct page of the page - * @order: page order - */ -static inline void __iommu_free_pages(struct page *page, int order) -{ - if (!page) - return; - - __iommu_free_account(page, order); - __free_pages(page, order); -} - /** * iommu_alloc_pages_node - allocate a zeroed page of a given order from * specific NUMA node.
@@ -110,12 +76,7 @@ static inline void *iommu_alloc_pages_node(int nid, gfp_t gfp, int order) */ static inline void *iommu_alloc_pages(gfp_t gfp, int order) { - struct page *page = __iommu_alloc_pages(gfp, order); - - if (unlikely(!page)) - return NULL; - - return page_address(page); + return iommu_alloc_pages_node(numa_node_id(), gfp, order); } /**
@@ -138,7 +99,7 @@ static inline void *iommu_alloc_page_node(int nid, gfp_t gfp) */ static inline void *iommu_alloc_page(gfp_t gfp) { - return iommu_alloc_pages(gfp, 0); + return iommu_alloc_pages_node(numa_node_id(), gfp, 0); } /**
@@ -148,10 +109,14 @@ static inline void *iommu_alloc_page(gfp_t gfp) */ static inline void iommu_free_pages(void *virt, int order) { + struct page *page; + if (!virt) return; - __iommu_free_pages(virt_to_page(virt), order); + page = virt_to_page(virt); + __iommu_free_account(page, order); + __free_pages(page, order); } /**
--
2.43.0