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_ZERO);
49 static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
50 unsigned long address)
53 pte = alloc_pages(GFP_KERNEL | __GFP_ZERO, 0);
56 if (!pgtable_page_ctor(pte)) {
63 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
65 free_page((unsigned long)pte);
68 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
70 pgtable_page_dtor(pte);
74 #define __pte_free_tlb(tlb, pte, addr) \
76 pgtable_page_dtor(pte); \
77 tlb_remove_page((tlb), (pte)); \
80 #define check_pgt_cache() do { } while (0)