| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) |
| 3 | * Copyright 2003 PathScale, Inc. |
| 4 | * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h |
| 5 | * Licensed under the GPL |
| 6 | */ |
| 7 | |
| 8 | #ifndef __UM_PGALLOC_H |
| 9 | #define __UM_PGALLOC_H |
| 10 | |
| 11 | #include <linux/mm.h> |
| 12 | |
| 13 | #define pmd_populate_kernel(mm, pmd, pte) \ |
| 14 | set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte))) |
| 15 | |
| 16 | #define pmd_populate(mm, pmd, pte) \ |
| 17 | set_pmd(pmd, __pmd(_PAGE_TABLE + \ |
| 18 | ((unsigned long long)page_to_pfn(pte) << \ |
| 19 | (unsigned long long) PAGE_SHIFT))) |
| 20 | #define pmd_pgtable(pmd) pmd_page(pmd) |
| 21 | |
| 22 | /* |
| 23 | * Allocate and free page tables. |
| 24 | */ |
| 25 | extern pgd_t *pgd_alloc(struct mm_struct *); |
| 26 | extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); |
| 27 | |
| 28 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); |
| 29 | extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long); |
| 30 | |
| 31 | static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
| 32 | { |
| 33 | free_page((unsigned long) pte); |
| 34 | } |
| 35 | |
| 36 | static inline void pte_free(struct mm_struct *mm, pgtable_t pte) |
| 37 | { |
| 38 | pgtable_page_dtor(pte); |
| 39 | __free_page(pte); |
| 40 | } |
| 41 | |
| 42 | #define __pte_free_tlb(tlb,pte, address) \ |
| 43 | do { \ |
| 44 | pgtable_page_dtor(pte); \ |
| 45 | tlb_remove_page((tlb),(pte)); \ |
| 46 | } while (0) |
| 47 | |
| 48 | #ifdef CONFIG_3_LEVEL_PGTABLES |
| 49 | |
| 50 | static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) |
| 51 | { |
| 52 | free_page((unsigned long)pmd); |
| 53 | } |
| 54 | |
| 55 | #define __pmd_free_tlb(tlb,x, address) tlb_remove_page((tlb),virt_to_page(x)) |
| 56 | #endif |
| 57 | |
| 58 | #define check_pgt_cache() do { } while (0) |
| 59 | |
| 60 | #endif |
| 61 | |