| /* |
| * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) |
| * Copyright 2003 PathScale, Inc. |
| * Derived from include/asm-i386/pgalloc.h and include/asm-i386/pgtable.h |
| * Licensed under the GPL |
| */ |
| |
| #ifndef __UM_PGALLOC_H |
| #define __UM_PGALLOC_H |
| |
| #include "linux/mm.h" |
| #include "asm/fixmap.h" |
| |
| #define pmd_populate_kernel(mm, pmd, pte) \ |
| set_pmd(pmd, __pmd(_PAGE_TABLE + (unsigned long) __pa(pte))) |
| |
| #define pmd_populate(mm, pmd, pte) \ |
| set_pmd(pmd, __pmd(_PAGE_TABLE + \ |
| ((unsigned long long)page_to_pfn(pte) << \ |
| (unsigned long long) PAGE_SHIFT))) |
| #define pmd_pgtable(pmd) pmd_page(pmd) |
| |
| /* |
| * Allocate and free page tables. |
| */ |
| extern pgd_t *pgd_alloc(struct mm_struct *); |
| extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); |
| |
| extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); |
| extern pgtable_t pte_alloc_one(struct mm_struct *, unsigned long); |
| |
| static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte) |
| { |
| free_page((unsigned long) pte); |
| } |
| |
| static inline void pte_free(struct mm_struct *mm, pgtable_t pte) |
| { |
| pgtable_page_dtor(pte); |
| __free_page(pte); |
| } |
| |
| #define __pte_free_tlb(tlb,pte) \ |
| do { \ |
| pgtable_page_dtor(pte); \ |
| tlb_remove_page((tlb),(pte)); \ |
| } while (0) |
| |
| #ifdef CONFIG_3_LEVEL_PGTABLES |
| |
| static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) |
| { |
| free_page((unsigned long)pmd); |
| } |
| |
| #define __pmd_free_tlb(tlb,x) tlb_remove_page((tlb),virt_to_page(x)) |
| #endif |
| |
| #define check_pgt_cache() do { } while (0) |
| |
| #endif |
| |