include/asm-sh/pgalloc.h

   1 #ifndef __ASM_SH_PGALLOC_H
   2 #define __ASM_SH_PGALLOC_H
   3
   4 #define pmd_populate_kernel(mm, pmd, pte) \
   5                 set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
   6
   7 static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
   8                                 struct page *pte)
   9 {
  10         set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
  11 }
  12
  13 /*
  14  * Allocate and free page tables.
  15  */
  16 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  17 {
  18         return (pgd_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
  19 }
  20
  21 static inline void pgd_free(pgd_t *pgd)
  22 {
  23         free_page((unsigned long)pgd);
  24 }
  25
  26 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  27                                           unsigned long address)
  28 {
  29         return (pte_t *)__get_free_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
  30 }
  31
  32 static inline struct page *pte_alloc_one(struct mm_struct *mm,
  33                                          unsigned long address)
  34 {
  35         return alloc_page(GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO);
  36 }
  37
  38 static inline void pte_free_kernel(pte_t *pte)
  39 {
  40         free_page((unsigned long)pte);
  41 }
  42
  43 static inline void pte_free(struct page *pte)
  44 {
  45         __free_page(pte);
  46 }
  47
  48 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
  49
  50 /*
  51  * allocating and freeing a pmd is trivial: the 1-entry pmd is
  52  * inside the pgd, so has no extra memory associated with it.
  53  */
  54
  55 #define pmd_free(x)                     do { } while (0)
  56 #define __pmd_free_tlb(tlb,x)           do { } while (0)
  57 #define check_pgt_cache()               do { } while (0)
  58
  59 #endif /* __ASM_SH_PGALLOC_H */