release/src-rt-6.x/linux/linux-2.6/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(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(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 struct page *pte_alloc_one(struct mm_struct *mm,
  47                                          unsigned long address)
  48 {
  49         void *pg = quicklist_alloc(0, GFP_KERNEL, NULL);
  50         return pg ? virt_to_page(pg) : NULL;
  51 }
  52
  53 static inline void pte_free_kernel(pte_t *pte)
  54 {
  55         quicklist_free(0, NULL, pte);
  56 }
  57
  58 static inline void pte_free(struct page *ptepage)
  59 {
  60         quicklist_free_page(0, NULL, ptepage);
  61 }
  62
  63
  64 #define pmd_populate_kernel(MM, PMD, PTE)       pmd_set(PMD, PTE)
  65 #define pmd_populate(MM,PMD,PTE_PAGE)           \
  66         pmd_populate_kernel(MM,PMD,page_address(PTE_PAGE))
  67
  68 static inline void check_pgt_cache(void)
  69 {
  70         quicklist_trim(0, NULL, 25, 16);
  71 }
  72
  73 #endif /* _SPARC64_PGALLOC_H */