1 #ifndef _ASM_SCORE_PGALLOC_H
2 #define _ASM_SCORE_PGALLOC_H
3
4 #include <linux/mm.h>
5 #include <linux/highmem.h>
pmd_populate_kernel(struct mm_struct * mm,pmd_t * pmd,pte_t * pte)6 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
7 pte_t *pte)
8 {
9 set_pmd(pmd, __pmd((unsigned long)pte));
10 }
11
pmd_populate(struct mm_struct * mm,pmd_t * pmd,pgtable_t pte)12 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
13 pgtable_t pte)
14 {
15 set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
16 }
17
18 #define pmd_pgtable(pmd) pmd_page(pmd)
19
pgd_alloc(struct mm_struct * mm)20 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
21 {
22 pgd_t *ret, *init;
23
24 ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
25 if (ret) {
26 init = pgd_offset(&init_mm, 0UL);
27 pgd_init((unsigned long)ret);
28 memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
29 (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
30 }
31
32 return ret;
33 }
34
pgd_free(struct mm_struct * mm,pgd_t * pgd)35 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
36 {
37 free_pages((unsigned long)pgd, PGD_ORDER);
38 }
39
pte_alloc_one_kernel(struct mm_struct * mm,unsigned long address)40 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
41 unsigned long address)
42 {
43 pte_t *pte;
44
45 pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO,
46 PTE_ORDER);
47
48 return pte;
49 }
50
pte_alloc_one(struct mm_struct * mm,unsigned long address)51 static inline struct page *pte_alloc_one(struct mm_struct *mm,
52 unsigned long address)
53 {
54 struct page *pte;
55
56 pte = alloc_pages(GFP_KERNEL | __GFP_REPEAT, PTE_ORDER);
57 if (!pte)
58 return NULL;
59 clear_highpage(pte);
60 if (!pgtable_page_ctor(pte)) {
61 __free_page(pte);
62 return NULL;
63 }
64 return pte;
65 }
66
pte_free_kernel(struct mm_struct * mm,pte_t * pte)67 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
68 {
69 free_pages((unsigned long)pte, PTE_ORDER);
70 }
71
pte_free(struct mm_struct * mm,pgtable_t pte)72 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
73 {
74 pgtable_page_dtor(pte);
75 __free_pages(pte, PTE_ORDER);
76 }
77
78 #define __pte_free_tlb(tlb, pte, buf) \
79 do { \
80 pgtable_page_dtor(pte); \
81 tlb_remove_page((tlb), pte); \
82 } while (0)
83
84 #define check_pgt_cache() do {} while (0)
85
86 #endif /* _ASM_SCORE_PGALLOC_H */
87