1 #ifndef _METAG_PGALLOC_H
2 #define _METAG_PGALLOC_H
4 #include <linux/threads.h>
7 #define pmd_populate_kernel(mm, pmd, pte) \
8 set_pmd(pmd, __pmd(_PAGE_TABLE | __pa(pte)))
10 #define pmd_populate(mm, pmd, pte) \
11 set_pmd(pmd, __pmd(_PAGE_TABLE | page_to_phys(pte)))
13 #define pmd_pgtable(pmd) pmd_page(pmd)
16 * Allocate and free page tables.
18 #ifdef CONFIG_METAG_META21_MMU
19 static inline void pgd_ctor(pgd_t
*pgd
)
21 memcpy(pgd
+ USER_PTRS_PER_PGD
,
22 swapper_pg_dir
+ USER_PTRS_PER_PGD
,
23 (PTRS_PER_PGD
- USER_PTRS_PER_PGD
) * sizeof(pgd_t
));
26 #define pgd_ctor(x) do { } while (0)
29 static inline pgd_t
*pgd_alloc(struct mm_struct
*mm
)
31 pgd_t
*pgd
= (pgd_t
*)get_zeroed_page(GFP_KERNEL
);
37 static inline void pgd_free(struct mm_struct
*mm
, pgd_t
*pgd
)
39 free_page((unsigned long)pgd
);
42 static inline pte_t
*pte_alloc_one_kernel(struct mm_struct
*mm
,
43 unsigned long address
)
45 pte_t
*pte
= (pte_t
*)__get_free_page(GFP_KERNEL
| __GFP_REPEAT
|
50 static inline pgtable_t
pte_alloc_one(struct mm_struct
*mm
,
51 unsigned long address
)
54 pte
= alloc_pages(GFP_KERNEL
| __GFP_REPEAT
| __GFP_ZERO
, 0);
57 if (!pgtable_page_ctor(pte
)) {
64 static inline void pte_free_kernel(struct mm_struct
*mm
, pte_t
*pte
)
66 free_page((unsigned long)pte
);
69 static inline void pte_free(struct mm_struct
*mm
, pgtable_t pte
)
71 pgtable_page_dtor(pte
);
75 #define __pte_free_tlb(tlb, pte, addr) \
77 pgtable_page_dtor(pte); \
78 tlb_remove_page((tlb), (pte)); \
81 #define check_pgt_cache() do { } while (0)
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