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| author |   Vineet Gupta <vgupta@synopsys.com> | 2015-08-28 08:39:57 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2015-10-09 17:04:22 +0530 |
| commit | e8a75963a4b9433dca55286e222f4dd1cc1ca76c (patch) | |
| tree | 2621e0ee34caa568d0e7a3b8b6a555f1002183e5 | |
| parent | Linux 4.3-rc4 (diff) | |
| download | linux-dev-e8a75963a4b9433dca55286e222f4dd1cc1ca76c.tar.xz linux-dev-e8a75963a4b9433dca55286e222f4dd1cc1ca76c.zip | |
ARC: mm: switch pgtable_to to pte_t *
ARC is the only arch with unsigned long type (vs. struct page *).
Historically this was done to avoid the page_address() calls in various
arch hooks which need to get the virtual/logical address of the table.
Some arches alternately define it as pte_t *, and is as efficient as
unsigned long (generated code doesn't change)
Suggested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
| -rw-r--r-- | arch/arc/include/asm/page.h | 4 | ||||
| -rw-r--r-- | arch/arc/include/asm/pgalloc.h | 6 |
2 files changed, 5 insertions, 5 deletions
diff --git a/arch/arc/include/asm/page.h b/arch/arc/include/asm/page.h index 9c8aa41e45c2..2994cac1069e 100644 --- a/arch/arc/include/asm/page.h +++ b/arch/arc/include/asm/page.h @@ -43,7 +43,6 @@ typedef struct { typedef struct { unsigned long pgprot; } pgprot_t; -typedef unsigned long pgtable_t; #define pte_val(x) ((x).pte) #define pgd_val(x) ((x).pgd) @@ -60,7 +59,6 @@ typedef unsigned long pgtable_t; typedef unsigned long pte_t; typedef unsigned long pgd_t; typedef unsigned long pgprot_t; -typedef unsigned long pgtable_t; #define pte_val(x) (x) #define pgd_val(x) (x) @@ -71,6 +69,8 @@ typedef unsigned long pgtable_t; #endif +typedef pte_t * pgtable_t; + #define ARCH_PFN_OFFSET (CONFIG_LINUX_LINK_BASE >> PAGE_SHIFT) #define pfn_valid(pfn) (((pfn) - ARCH_PFN_OFFSET) < max_mapnr) diff --git a/arch/arc/include/asm/pgalloc.h b/arch/arc/include/asm/pgalloc.h index 81208bfd9dcb..9149b5ca26d7 100644 --- a/arch/arc/include/asm/pgalloc.h +++ b/arch/arc/include/asm/pgalloc.h @@ -107,7 +107,7 @@ pte_alloc_one(struct mm_struct *mm, unsigned long address) pgtable_t pte_pg; struct page *page; - pte_pg = __get_free_pages(GFP_KERNEL | __GFP_REPEAT, __get_order_pte()); + pte_pg = (pgtable_t)__get_free_pages(GFP_KERNEL | __GFP_REPEAT, __get_order_pte()); if (!pte_pg) return 0; memzero((void *)pte_pg, PTRS_PER_PTE * 4); @@ -128,12 +128,12 @@ static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) static inline void pte_free(struct mm_struct *mm, pgtable_t ptep) { pgtable_page_dtor(virt_to_page(ptep)); - free_pages(ptep, __get_order_pte()); + free_pages((unsigned long)ptep, __get_order_pte()); } #define __pte_free_tlb(tlb, pte, addr) pte_free((tlb)->mm, pte) #define check_pgt_cache() do { } while (0) -#define pmd_pgtable(pmd) pmd_page_vaddr(pmd) +#define pmd_pgtable(pmd) ((pgtable_t) pmd_page_vaddr(pmd)) #endif /* _ASM_ARC_PGALLOC_H */ |