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Linux/arch/cris/include/asm/pgalloc.h

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  1 #ifndef _CRIS_PGALLOC_H
  2 #define _CRIS_PGALLOC_H
  3 
  4 #include <linux/threads.h>
  5 #include <linux/mm.h>
  6 
  7 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, pte)
  8 #define pmd_populate(mm, pmd, pte) pmd_set(pmd, page_address(pte))
  9 #define pmd_pgtable(pmd) pmd_page(pmd)
 10 
 11 /*
 12  * Allocate and free page tables.
 13  */
 14 
 15 static inline pgd_t *pgd_alloc (struct mm_struct *mm)
 16 {
 17         return (pgd_t *)get_zeroed_page(GFP_KERNEL);
 18 }
 19 
 20 static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 21 {
 22         free_page((unsigned long)pgd);
 23 }
 24 
 25 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, unsigned long address)
 26 {
 27         pte_t *pte = (pte_t *)__get_free_page(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO);
 28         return pte;
 29 }
 30 
 31 static inline pgtable_t pte_alloc_one(struct mm_struct *mm, unsigned long address)
 32 {
 33         struct page *pte;
 34         pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0);
 35         if (!pte)
 36                 return NULL;
 37         if (!pgtable_page_ctor(pte)) {
 38                 __free_page(pte);
 39                 return NULL;
 40         }
 41         return pte;
 42 }
 43 
 44 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
 45 {
 46         free_page((unsigned long)pte);
 47 }
 48 
 49 static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
 50 {
 51         pgtable_page_dtor(pte);
 52         __free_page(pte);
 53 }
 54 
 55 #define __pte_free_tlb(tlb,pte,address)                 \
 56 do {                                                    \
 57         pgtable_page_dtor(pte);                         \
 58         tlb_remove_page((tlb), pte);                    \
 59 } while (0)
 60 
 61 #define check_pgt_cache()          do { } while (0)
 62 
 63 #endif
 64 

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