diff options
Diffstat (limited to 'include/asm-alpha/pgalloc.h')
-rw-r--r-- | include/asm-alpha/pgalloc.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/include/asm-alpha/pgalloc.h b/include/asm-alpha/pgalloc.h new file mode 100644 index 000000000000..308475642913 --- /dev/null +++ b/include/asm-alpha/pgalloc.h | |||
@@ -0,0 +1,78 @@ | |||
1 | #ifndef _ALPHA_PGALLOC_H | ||
2 | #define _ALPHA_PGALLOC_H | ||
3 | |||
4 | #include <linux/config.h> | ||
5 | #include <linux/mm.h> | ||
6 | #include <linux/mmzone.h> | ||
7 | |||
8 | /* | ||
9 | * Allocate and free page tables. The xxx_kernel() versions are | ||
10 | * used to allocate a kernel page table - this turns on ASN bits | ||
11 | * if any. | ||
12 | */ | ||
13 | |||
14 | static inline void | ||
15 | pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte) | ||
16 | { | ||
17 | pmd_set(pmd, (pte_t *)(page_to_pa(pte) + PAGE_OFFSET)); | ||
18 | } | ||
19 | |||
20 | static inline void | ||
21 | pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, pte_t *pte) | ||
22 | { | ||
23 | pmd_set(pmd, pte); | ||
24 | } | ||
25 | |||
26 | static inline void | ||
27 | pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd) | ||
28 | { | ||
29 | pgd_set(pgd, pmd); | ||
30 | } | ||
31 | |||
32 | extern pgd_t *pgd_alloc(struct mm_struct *mm); | ||
33 | |||
34 | static inline void | ||
35 | pgd_free(pgd_t *pgd) | ||
36 | { | ||
37 | free_page((unsigned long)pgd); | ||
38 | } | ||
39 | |||
40 | static inline pmd_t * | ||
41 | pmd_alloc_one(struct mm_struct *mm, unsigned long address) | ||
42 | { | ||
43 | pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO); | ||
44 | return ret; | ||
45 | } | ||
46 | |||
47 | static inline void | ||
48 | pmd_free(pmd_t *pmd) | ||
49 | { | ||
50 | free_page((unsigned long)pmd); | ||
51 | } | ||
52 | |||
53 | extern pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr); | ||
54 | |||
55 | static inline void | ||
56 | pte_free_kernel(pte_t *pte) | ||
57 | { | ||
58 | free_page((unsigned long)pte); | ||
59 | } | ||
60 | |||
61 | static inline struct page * | ||
62 | pte_alloc_one(struct mm_struct *mm, unsigned long addr) | ||
63 | { | ||
64 | pte_t *pte = pte_alloc_one_kernel(mm, addr); | ||
65 | if (pte) | ||
66 | return virt_to_page(pte); | ||
67 | return NULL; | ||
68 | } | ||
69 | |||
70 | static inline void | ||
71 | pte_free(struct page *page) | ||
72 | { | ||
73 | __free_page(page); | ||
74 | } | ||
75 | |||
76 | #define check_pgt_cache() do { } while (0) | ||
77 | |||
78 | #endif /* _ALPHA_PGALLOC_H */ | ||