| #ifndef _I386_PGALLOC_H |
| #define _I386_PGALLOC_H |
| |
| #include <linux/config.h> |
| #include <asm/processor.h> |
| #include <asm/fixmap.h> |
| #include <linux/threads.h> |
| #include <linux/mm.h> /* for struct page */ |
| |
| #define pmd_populate_kernel(mm, pmd, pte) \ |
| set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))) |
| |
| static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) |
| { |
| set_pmd(pmd, __pmd(_PAGE_TABLE + |
| ((unsigned long long)page_to_pfn(pte) << |
| (unsigned long long) PAGE_SHIFT))); |
| } |
| /* |
| * Allocate and free page tables. |
| */ |
| |
| extern pgd_t *pgd_alloc(struct mm_struct *); |
| extern void pgd_free(pgd_t *pgd); |
| |
| extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); |
| extern struct page *pte_alloc_one(struct mm_struct *, unsigned long); |
| |
| static inline void pte_free_kernel(pte_t *pte) |
| { |
| free_page((unsigned long)pte); |
| } |
| |
| static inline void pte_free(struct page *pte) |
| { |
| __free_page(pte); |
| } |
| |
| |
| #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) |
| |
| /* |
| * allocating and freeing a pmd is trivial: the 1-entry pmd is |
| * inside the pgd, so has no extra memory associated with it. |
| * (In the PAE case we free the pmds as part of the pgd.) |
| */ |
| |
| #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) |
| #define pmd_free(x) do { } while (0) |
| #define __pmd_free_tlb(tlb,x) do { } while (0) |
| #define pgd_populate(mm, pmd, pte) BUG() |
| |
| #define check_pgt_cache() do { } while (0) |
| |
| #endif /* _I386_PGALLOC_H */ |