release/src-rt-6.x.4708/linux/linux-2.6.36/arch/cris/include/asm/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 #define pmd_pgtable(pmd) pmd_page(pmd)
  10
  11 /*
  12  * Allocate and free page tables.
  13  */
  14
  15 static inline pgd_t *pgd_alloc (struct mm_struct *mm)
  16 {
  17         return (pgd_t *)get_zeroed_page(GFP_KERNEL);
  18 }
  19
  20 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  21 {
  22         free_page((unsigned long)pgd);
  23 }
  24
  25 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
  26 {
  27         pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
  28         return pte;
  29 }
  30
  31 static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
  32 {
  33         struct page *pte;
  34         pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
  35         pgtable_page_ctor(pte);
  36         return pte;
  37 }
  38
  39 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
  40 {
  41         free_page((unsigned long)pte);
  42 }
  43
  44 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
  45 {
  46         pgtable_page_dtor(pte);
  47         __free_page(pte);
  48 }
  49
  50 #define __pte_free_tlb(tlb,pte,address)                 \
  51 do {                                                    \
  52         pgtable_page_dtor(pte);                         \
  53         tlb_remove_page((tlb), pte);                    \
  54 } while (0)
  55
  56 #define check_pgt_cache()          do { } while (0)
  57
  58 #endif