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1da177e4 LT |
1 | #ifndef _I386_PGALLOC_H |
2 | #define _I386_PGALLOC_H | |
3 | ||
4 | #include <linux/config.h> | |
5 | #include <asm/fixmap.h> | |
6 | #include <linux/threads.h> | |
7 | #include <linux/mm.h> /* for struct page */ | |
8 | ||
9 | #define pmd_populate_kernel(mm, pmd, pte) \ | |
10 | set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte))) | |
11 | ||
12 | #define pmd_populate(mm, pmd, pte) \ | |
13 | set_pmd(pmd, __pmd(_PAGE_TABLE + \ | |
14 | ((unsigned long long)page_to_pfn(pte) << \ | |
15 | (unsigned long long) PAGE_SHIFT))) | |
16 | /* | |
17 | * Allocate and free page tables. | |
18 | */ | |
19 | extern pgd_t *pgd_alloc(struct mm_struct *); | |
20 | extern void pgd_free(pgd_t *pgd); | |
21 | ||
22 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long); | |
23 | extern struct page *pte_alloc_one(struct mm_struct *, unsigned long); | |
24 | ||
25 | static inline void pte_free_kernel(pte_t *pte) | |
26 | { | |
27 | free_page((unsigned long)pte); | |
28 | } | |
29 | ||
30 | static inline void pte_free(struct page *pte) | |
31 | { | |
32 | __free_page(pte); | |
33 | } | |
34 | ||
35 | ||
36 | #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte)) | |
37 | ||
38 | #ifdef CONFIG_X86_PAE | |
39 | /* | |
40 | * In the PAE case we free the pmds as part of the pgd. | |
41 | */ | |
42 | #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); }) | |
43 | #define pmd_free(x) do { } while (0) | |
44 | #define __pmd_free_tlb(tlb,x) do { } while (0) | |
45 | #define pud_populate(mm, pmd, pte) BUG() | |
46 | #endif | |
47 | ||
48 | #define check_pgt_cache() do { } while (0) | |
49 | ||
50 | #endif /* _I386_PGALLOC_H */ |