include/asm-m32r/pgalloc.h

   1 #ifndef _ASM_M32R_PGALLOC_H
   2 #define _ASM_M32R_PGALLOC_H
   3
   4 /* $Id$ */
   5
   6 #include <linux/mm.h>
   7
   8 #include <asm/io.h>
   9
  10 #define pmd_populate_kernel(mm, pmd, pte)       \
  11         set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
  12
  13 static __inline__ void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
  14         struct page *pte)
  15 {
  16         set_pmd(pmd, __pmd(_PAGE_TABLE + page_to_phys(pte)));
  17 }
  18
  19 /*
  20  * Allocate and free page tables.
  21  */
  22 static __inline__ pgd_t *pgd_alloc(struct mm_struct *mm)
  23 {
  24         pgd_t *pgd = (pgd_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
  25
  26         return pgd;
  27 }
  28
  29 static __inline__ void pgd_free(pgd_t *pgd)
  30 {
  31         free_page((unsigned long)pgd);
  32 }
  33
  34 static __inline__ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  35         unsigned long address)
  36 {
  37         pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_ZERO);
  38
  39         return pte;
  40 }
  41
  42 static __inline__ struct page *pte_alloc_one(struct mm_struct *mm,
  43         unsigned long address)
  44 {
  45         struct page *pte = alloc_page(GFP_KERNEL|__GFP_ZERO);
  46
  47
  48         return pte;
  49 }
  50
  51 static __inline__ void pte_free_kernel(pte_t *pte)
  52 {
  53         free_page((unsigned long)pte);
  54 }
  55
  56 static __inline__ void pte_free(struct page *pte)
  57 {
  58         __free_page(pte);
  59 }
  60
  61 #define __pte_free_tlb(tlb, pte)        pte_free((pte))
  62
  63 /*
  64  * allocating and freeing a pmd is trivial: the 1-entry pmd is
  65  * inside the pgd, so has no extra memory associated with it.
  66  * (In the PAE case we free the pmds as part of the pgd.)
  67  */
  68
  69 #define pmd_alloc_one(mm, addr)         ({ BUG(); ((pmd_t *)2); })
  70 #define pmd_free(x)                     do { } while (0)
  71 #define __pmd_free_tlb(tlb, x)          do { } while (0)
  72 #define pgd_populate(mm, pmd, pte)      BUG()
  73
  74 #define check_pgt_cache()       do { } while (0)
  75
  76 #endif /* _ASM_M32R_PGALLOC_H */
  77