release/src-rt-6.x.4708/linux/linux-2.6.36/arch/sparc/include/asm/pgalloc_64.h

   1 #ifndef _SPARC64_PGALLOC_H
   2 #define _SPARC64_PGALLOC_H
   3
   4 #include <linux/kernel.h>
   5 #include <linux/sched.h>
   6 #include <linux/mm.h>
   7 #include <linux/slab.h>
   8 #include <linux/quicklist.h>
   9
  10 #include <asm/spitfire.h>
  11 #include <asm/cpudata.h>
  12 #include <asm/cacheflush.h>
  13 #include <asm/page.h>
  14
  15 /* Page table allocation/freeing. */
  16
  17 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  18 {
  19         return quicklist_alloc(0, GFP_KERNEL, NULL);
  20 }
  21
  22 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  23 {
  24         quicklist_free(0, NULL, pgd);
  25 }
  26
  27 #define pud_populate(MM, PUD, PMD)      pud_set(PUD, PMD)
  28
  29 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
  30 {
  31         return quicklist_alloc(0, GFP_KERNEL, NULL);
  32 }
  33
  34 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  35 {
  36         quicklist_free(0, NULL, pmd);
  37 }
  38
  39 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  40                                           unsigned long address)
  41 {
  42         return quicklist_alloc(0, GFP_KERNEL, NULL);
  43 }
  44
  45 static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
  46                                         unsigned long address)
  47 {
  48         struct page *page;
  49         void *pg;
  50
  51         pg = quicklist_alloc(0, GFP_KERNEL, NULL);
  52         if (!pg)
  53                 return NULL;
  54         page = virt_to_page(pg);
  55         pgtable_page_ctor(page);
  56         return page;
  57 }
  58
  59 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
  60 {
  61         quicklist_free(0, NULL, pte);
  62 }
  63
  64 static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
  65 {
  66         pgtable_page_dtor(ptepage);
  67         quicklist_free_page(0, NULL, ptepage);
  68 }
  69
  70
  71 #define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(PMD, PTE)
  72 #define pmd_populate(MM,PMD,PTE_PAGE)           \
  73         pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE))
  74 #define pmd_pgtable(pmd) pmd_page(pmd)
  75
  76 static inline void check_pgt_cache(void)
  77 {
  78         quicklist_trim(0, NULL, 25, 16);
  79 }
  80
  81 #endif /* _SPARC64_PGALLOC_H */