include/asm-sparc64/pgalloc.h

   1 /* $Id: pgalloc.h,v 1.30 2001/12/21 04:56:17 davem Exp $ */
   2 #ifndef _SPARC64_PGALLOC_H
   3 #define _SPARC64_PGALLOC_H
   4
   5 #include <linux/kernel.h>
   6 #include <linux/sched.h>
   7 #include <linux/mm.h>
   8 #include <linux/slab.h>
   9 #include <linux/quicklist.h>
  10
  11 #include <asm/spitfire.h>
  12 #include <asm/cpudata.h>
  13 #include <asm/cacheflush.h>
  14 #include <asm/page.h>
  15
  16 /* Page table allocation/freeing. */
  17
  18 static inline pgd_t *pgd_alloc(struct mm_struct *mm)
  19 {
  20         return quicklist_alloc(0, GFP_KERNEL, NULL);
  21 }
  22
  23 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
  24 {
  25         quicklist_free(0, NULL, pgd);
  26 }
  27
  28 #define pud_populate(MM, PUD, PMD)      pud_set(PUD, PMD)
  29
  30 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
  31 {
  32         return quicklist_alloc(0, GFP_KERNEL, NULL);
  33 }
  34
  35 static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
  36 {
  37         quicklist_free(0, NULL, pmd);
  38 }
  39
  40 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
  41                                           unsigned long address)
  42 {
  43         return quicklist_alloc(0, GFP_KERNEL, NULL);
  44 }
  45
  46 static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
  47                                         unsigned long address)
  48 {
  49         struct page *page;
  50         void *pg;
  51
  52         pg = quicklist_alloc(0, GFP_KERNEL, NULL);
  53         if (!pg)
  54                 return NULL;
  55         page = virt_to_page(pg);
  56         pgtable_page_ctor(page);
  57         return page;
  58 }
  59
  60 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
  61 {
  62         quicklist_free(0, NULL, pte);
  63 }
  64
  65 static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
  66 {
  67         pgtable_page_dtor(ptepage);
  68         quicklist_free_page(0, NULL, ptepage);
  69 }
  70
  71
  72 #define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(PMD, PTE)
  73 #define pmd_populate(MM,PMD,PTE_PAGE)           \
  74         pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE))
  75 #define pmd_pgtable(pmd) pmd_page(pmd)
  76
  77 static inline void check_pgt_cache(void)
  78 {
  79         quicklist_trim(0, NULL, 25, 16);
  80 }
  81
  82 #endif /* _SPARC64_PGALLOC_H */