This source file includes following definitions.
- pgtable_gfp_flags
- pgtable_gfp_flags
- pte_alloc_one_kernel
- pte_alloc_one
- pte_free_kernel
- pte_free
- pmd_pgtable
1
2 #ifndef _ASM_POWERPC_PGALLOC_H
3 #define _ASM_POWERPC_PGALLOC_H
4
5 #include <linux/mm.h>
6
7 #ifndef MODULE
8 static inline gfp_t pgtable_gfp_flags(struct mm_struct *mm, gfp_t gfp)
9 {
10 if (unlikely(mm == &init_mm))
11 return gfp;
12 return gfp | __GFP_ACCOUNT;
13 }
14 #else
15 static inline gfp_t pgtable_gfp_flags(struct mm_struct *mm, gfp_t gfp)
16 {
17 return gfp | __GFP_ACCOUNT;
18 }
19 #endif
20
21 #define PGALLOC_GFP (GFP_KERNEL | __GFP_ZERO)
22
23 pte_t *pte_fragment_alloc(struct mm_struct *mm, int kernel);
24
25 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm)
26 {
27 return (pte_t *)pte_fragment_alloc(mm, 1);
28 }
29
30 static inline pgtable_t pte_alloc_one(struct mm_struct *mm)
31 {
32 return (pgtable_t)pte_fragment_alloc(mm, 0);
33 }
34
35 void pte_frag_destroy(void *pte_frag);
36 void pte_fragment_free(unsigned long *table, int kernel);
37
38 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
39 {
40 pte_fragment_free((unsigned long *)pte, 1);
41 }
42
43 static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
44 {
45 pte_fragment_free((unsigned long *)ptepage, 0);
46 }
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62 #define MAX_PGTABLE_INDEX_SIZE 0xf
63
64 extern struct kmem_cache *pgtable_cache[];
65 #define PGT_CACHE(shift) pgtable_cache[shift]
66
67 #ifdef CONFIG_PPC_BOOK3S
68 #include <asm/book3s/pgalloc.h>
69 #else
70 #include <asm/nohash/pgalloc.h>
71 #endif
72
73 static inline pgtable_t pmd_pgtable(pmd_t pmd)
74 {
75 return (pgtable_t)pmd_page_vaddr(pmd);
76 }
77
78 #endif