include/asm-ppc64/tlbflush.h

   1 #ifndef _PPC64_TLBFLUSH_H
   2 #define _PPC64_TLBFLUSH_H
   3
   4 /*
   5  * TLB flushing:
   6  *
   7  *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
   8  *  - flush_tlb_page(vma, vmaddr) flushes one page
   9  *  - flush_tlb_range(vma, start, end) flushes a range of pages
  10  *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
  11  *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
  12  */
  13
  14 #include <linux/percpu.h>
  15 #include <asm/page.h>
  16
  17 #define PPC64_TLB_BATCH_NR 192
  18
  19 struct mm_struct;
  20 struct ppc64_tlb_batch {
  21         unsigned long index;
  22         unsigned long context;
  23         struct mm_struct *mm;
  24         pte_t pte[PPC64_TLB_BATCH_NR];
  25         unsigned long addr[PPC64_TLB_BATCH_NR];
  26         unsigned long vaddr[PPC64_TLB_BATCH_NR];
  27 };
  28 DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
  29
  30 extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
  31
  32 static inline void flush_tlb_pending(void)
  33 {
  34         struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
  35
  36         if (batch->index)
  37                 __flush_tlb_pending(batch);
  38 }
  39
  40 #define flush_tlb_mm(mm)                        flush_tlb_pending()
  41 #define flush_tlb_page(vma, addr)               flush_tlb_pending()
  42 #define flush_tlb_range(vma, start, end) \
  43                 do { (void)(start); flush_tlb_pending(); } while (0)
  44 #define flush_tlb_kernel_range(start, end)      flush_tlb_pending()
  45 #define flush_tlb_pgtables(mm, start, end)      do { } while (0)
  46
  47 extern void flush_hash_page(unsigned long context, unsigned long ea, pte_t pte,
  48                             int local);
  49 void flush_hash_range(unsigned long context, unsigned long number, int local);
  50
  51 #endif /* _PPC64_TLBFLUSH_H */