include/asm-i386/pgalloc.h

   1 #ifndef _I386_PGALLOC_H
   2 #define _I386_PGALLOC_H
   3
   4 #include <asm/fixmap.h>
   5 #include <linux/threads.h>
   6 #include <linux/mm.h>           /* for struct page */
   7
   8 #define pmd_populate_kernel(mm, pmd, pte) \
   9                 set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))
  10
  11 #define pmd_populate(mm, pmd, pte)                              \
  12         set_pmd(pmd, __pmd(_PAGE_TABLE +                        \
  13                 ((unsigned long long)page_to_pfn(pte) <<        \
  14                         (unsigned long long) PAGE_SHIFT)))
  15 /*
  16  * Allocate and free page tables.
  17  */
  18 extern pgd_t *pgd_alloc(struct mm_struct *);
  19 extern void pgd_free(pgd_t *pgd);
  20
  21 extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
  22 extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
  23
  24 static inline void pte_free_kernel(pte_t *pte)
  25 {
  26         free_page((unsigned long)pte);
  27 }
  28
  29 static inline void pte_free(struct page *pte)
  30 {
  31         __free_page(pte);
  32 }
  33
  34
  35 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
  36
  37 #ifdef CONFIG_X86_PAE
  38 /*
  39  * In the PAE case we free the pmds as part of the pgd.
  40  */
  41 #define pmd_alloc_one(mm, addr)         ({ BUG(); ((pmd_t *)2); })
  42 #define pmd_free(x)                     do { } while (0)
  43 #define __pmd_free_tlb(tlb,x)           do { } while (0)
  44 #define pud_populate(mm, pmd, pte)      BUG()
  45 #endif
  46
  47 #define check_pgt_cache()       do { } while (0)
  48
  49 #endif /* _I386_PGALLOC_H */