include/asm-cris/pgalloc.h

   1 #ifndef _CRIS_PGALLOC_H
   2 #define _CRIS_PGALLOC_H
   3
   4 #include <linux/threads.h>
   5 #include <linux/mm.h>
   6
   7 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
   8 #define pmd_populate(mm, pmd, pte) pmd_set(pmd, page_address(pte))
   9
  10 /*
  11  * Allocate and free page tables.
  12  */
  13
  14 extern inline pgd_t *pgd_alloc (struct mm_struct *mm)
  15 {
  16         return (pgd_t *)get_zeroed_page(GFP_KERNEL);
  17 }
  18
  19 extern inline void pgd_free (pgd_t *pgd)
  20 {
  21         free_page((unsigned long)pgd);
  22 }
  23
  24 extern inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
  25 {
  26         pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
  27         return pte;
  28 }
  29
  30 extern inline struct page *pte_alloc_one(struct mm_struct *mm, unsigned long address)
  31 {
  32         struct page *pte;
  33         pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
  34         return pte;
  35 }
  36
  37 extern inline void pte_free_kernel(pte_t *pte)
  38 {
  39         free_page((unsigned long)pte);
  40 }
  41
  42 extern inline void pte_free(struct page *pte)
  43 {
  44         __free_page(pte);
  45 }
  46
  47
  48 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
  49
  50 /*
  51  * We don't have any real pmd's, and this code never triggers because
  52  * the pgd will always be present..
  53  */
  54
  55 #define pmd_alloc_one(mm, addr)    ({ BUG(); ((pmd_t *)2); })
  56 #define pmd_free(x)                do { } while (0)
  57 #define __pmd_free_tlb(tlb,x)      do { } while (0)
  58 #define pgd_populate(mm, pmd, pte) BUG()
  59
  60 #define check_pgt_cache()          do { } while (0)
  61
  62 #endif