arch/powerpc/include/asm/pgalloc.h

   1 #ifndef _ASM_POWERPC_PGALLOC_H
   2 #define _ASM_POWERPC_PGALLOC_H
   3 #ifdef __KERNEL__
   4
   5 #include <linux/mm.h>
   6
   7 #ifdef CONFIG_PPC_BOOK3E
   8 extern void tlb_flush_pgtable(struct mmu_gather *tlb, unsigned long address);
   9 #else /* CONFIG_PPC_BOOK3E */
  10 static inline void tlb_flush_pgtable(struct mmu_gather *tlb,
  11                                      unsigned long address)
  12 {
  13 }
  14 #endif /* !CONFIG_PPC_BOOK3E */
  15
  16 static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
  17 {
  18         free_page((unsigned long)pte);
  19 }
  20
  21 static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
  22 {
  23         pgtable_page_dtor(ptepage);
  24         __free_page(ptepage);
  25 }
  26
  27 #ifdef CONFIG_PPC64
  28 #include <asm/pgalloc-64.h>
  29 #else
  30 #include <asm/pgalloc-32.h>
  31 #endif
  32
  33 #ifdef CONFIG_SMP
  34 extern void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift);
  35 extern void pte_free_finish(struct mmu_gather *tlb);
  36 #else /* CONFIG_SMP */
  37 static inline void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)
  38 {
  39         pgtable_free(table, shift);
  40 }
  41 static inline void pte_free_finish(struct mmu_gather *tlb) { }
  42 #endif /* !CONFIG_SMP */
  43
  44 static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *ptepage,
  45                                   unsigned long address)
  46 {
  47         tlb_flush_pgtable(tlb, address);
  48         pgtable_page_dtor(ptepage);
  49         pgtable_free_tlb(tlb, page_address(ptepage), 0);
  50 }
  51
  52 #endif /* __KERNEL__ */
  53 #endif /* _ASM_POWERPC_PGALLOC_H */