diff options
Diffstat (limited to 'kernel/arch/um/include/asm/pgalloc.h')
| -rw-r--r-- | kernel/arch/um/include/asm/pgalloc.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/kernel/arch/um/include/asm/pgalloc.h b/kernel/arch/um/include/asm/pgalloc.h new file mode 100644 index 000000000..bf90b2aa2 --- /dev/null +++ b/kernel/arch/um/include/asm/pgalloc.h @@ -0,0 +1,61 @@ +/* + * 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> + +#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, address) \ +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, address) tlb_remove_page((tlb),virt_to_page(x)) +#endif + +#define check_pgt_cache() do { } while (0) + +#endif + |