efivars: Refactor sanity checking code into separate function
[linux/fpc-iii.git] / arch / score / include / asm / pgalloc.h
blob2e067657db988d66d8fbd01912fbb4729d934ad3
1 #ifndef _ASM_SCORE_PGALLOC_H
2 #define _ASM_SCORE_PGALLOC_H
4 #include <linux/mm.h>
5 #include <linux/highmem.h>
6 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
7 pte_t *pte)
9 set_pmd(pmd, __pmd((unsigned long)pte));
12 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
13 pgtable_t pte)
15 set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
18 #define pmd_pgtable(pmd) pmd_page(pmd)
20 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
22 pgd_t *ret, *init;
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));
32 return ret;
35 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
37 free_pages((unsigned long)pgd, PGD_ORDER);
40 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
41 unsigned long address)
43 pte_t *pte;
45 pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO,
46 PTE_ORDER);
48 return pte;
51 static inline struct page *pte_alloc_one(struct mm_struct *mm,
52 unsigned long address)
54 struct page *pte;
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;
64 return pte;
67 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
69 free_pages((unsigned long)pte, PTE_ORDER);
72 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
74 pgtable_page_dtor(pte);
75 __free_pages(pte, PTE_ORDER);
78 #define __pte_free_tlb(tlb, pte, buf) \
79 do { \
80 pgtable_page_dtor(pte); \
81 tlb_remove_page((tlb), pte); \
82 } while (0)
84 #define check_pgt_cache() do {} while (0)
86 #endif /* _ASM_SCORE_PGALLOC_H */