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_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
  10  *  - flush_tlb_range(vma, start, end) flushes a range of pages
  11  *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
  12  *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
  13  */
  14
  15 #include <linux/percpu.h>
  16 #include <asm/page.h>
  17
  18 #define PPC64_TLB_BATCH_NR 192
  19
  20 struct mm_struct;
  21 struct ppc64_tlb_batch {
  22         unsigned long index;
  23         unsigned long context;
  24         struct mm_struct *mm;
  25         pte_t pte[PPC64_TLB_BATCH_NR];
  26         unsigned long addr[PPC64_TLB_BATCH_NR];
  27         unsigned long vaddr[PPC64_TLB_BATCH_NR];
  28         unsigned int large;
  29 };
  30 DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
  31
  32 extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
  33
  34 static inline void flush_tlb_pending(void)
  35 {
  36         struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
  37
  38         if (batch->index)
  39                 __flush_tlb_pending(batch);
  40         put_cpu_var(ppc64_tlb_batch);
  41 }
  42
  43 #define flush_tlb_mm(mm)                        flush_tlb_pending()
  44 #define flush_tlb_page(vma, addr)               flush_tlb_pending()
  45 #define flush_tlb_page_nohash(vma, addr)        do { } while (0)
  46 #define flush_tlb_range(vma, start, end) \
  47                 do { (void)(start); flush_tlb_pending(); } while (0)
  48 #define flush_tlb_kernel_range(start, end)      flush_tlb_pending()
  49 #define flush_tlb_pgtables(mm, start, end)      do { } while (0)
  50
  51 extern void flush_hash_page(unsigned long context, unsigned long ea, pte_t pte,
  52                             int local);
  53 void flush_hash_range(unsigned long context, unsigned long number, int local);
  54
  55 #endif /* _PPC64_TLBFLUSH_H */