include/asm-i386/pgalloc.h

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