1 #ifndef __ASM_SH_PGALLOC_H
2 #define __ASM_SH_PGALLOC_H
4 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
7 set_pmd(pmd, __pmd((unsigned long)pte));
10 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
13 set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
17 * Allocate and free page tables.
19 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
21 pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT);
24 memset(pgd, 0, USER_PTRS_PER_PGD * sizeof(pgd_t));
25 memcpy(pgd + USER_PTRS_PER_PGD,
26 swapper_pg_dir + USER_PTRS_PER_PGD,
27 (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
33 static inline void pgd_free(pgd_t *pgd)
35 free_page((unsigned long)pgd);
38 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
39 unsigned long address)
41 return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
44 static inline struct page *pte_alloc_one(struct mm_struct *mm,
45 unsigned long address)
47 return alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
50 static inline void pte_free_kernel(pte_t *pte)
52 free_page((unsigned long)pte);
55 static inline void pte_free(struct page *pte)
60 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
63 * allocating and freeing a pmd is trivial: the 1-entry pmd is
64 * inside the pgd, so has no extra memory associated with it.
67 #define pmd_free(x) do { } while (0)
68 #define __pmd_free_tlb(tlb,x) do { } while (0)
69 #define check_pgt_cache() do { } while (0)
71 #endif /* __ASM_SH_PGALLOC_H */