1 #ifndef __ASM_SH_PGALLOC_H
2 #define __ASM_SH_PGALLOC_H
4 #include <asm/processor.h>
5 #include <linux/threads.h>
6 #include <linux/slab.h>
9 #define pgd_quicklist ((unsigned long *)0)
10 #define pmd_quicklist ((unsigned long *)0)
11 #define pte_quicklist ((unsigned long *)0)
12 #define pgtable_cache_size 0L
14 #define pmd_populate_kernel(mm, pmd, pte) \
15 set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
17 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
20 set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
24 * Allocate and free page tables.
26 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
28 unsigned int pgd_size = (USER_PTRS_PER_PGD * sizeof(pgd_t));
29 pgd_t *pgd = (pgd_t *)kmalloc(pgd_size, GFP_KERNEL);
32 memset(pgd, 0, pgd_size);
37 static inline void pgd_free(pgd_t *pgd)
42 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
43 unsigned long address)
47 pte = (pte_t *) __get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
52 static inline struct page *pte_alloc_one(struct mm_struct *mm,
53 unsigned long address)
57 pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
62 static inline void pte_free_kernel(pte_t *pte)
64 free_page((unsigned long)pte);
67 static inline void pte_free(struct page *pte)
72 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
75 * allocating and freeing a pmd is trivial: the 1-entry pmd is
76 * inside the pgd, so has no extra memory associated with it.
79 #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
80 #define pmd_free(x) do { } while (0)
81 #define __pmd_free_tlb(tlb,x) do { } while (0)
82 #define pgd_populate(mm, pmd, pte) BUG()
83 #define check_pgt_cache() do { } while (0)
86 #define PG_mapped PG_arch_1
89 #endif /* __ASM_SH_PGALLOC_H */