Automatic merge of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata...
[linux-2.6] / 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 };
29 DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
30
31 extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
32
33 static inline void flush_tlb_pending(void)
34 {
35         struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
36
37         if (batch->index)
38                 __flush_tlb_pending(batch);
39         put_cpu_var(ppc64_tlb_batch);
40 }
41
42 #define flush_tlb_mm(mm)                        flush_tlb_pending()
43 #define flush_tlb_page(vma, addr)               flush_tlb_pending()
44 #define flush_tlb_page_nohash(vma, addr)        do { } while (0)
45 #define flush_tlb_range(vma, start, end) \
46                 do { (void)(start); flush_tlb_pending(); } while (0)
47 #define flush_tlb_kernel_range(start, end)      flush_tlb_pending()
48 #define flush_tlb_pgtables(mm, start, end)      do { } while (0)
49
50 extern void flush_hash_page(unsigned long context, unsigned long ea, pte_t pte,
51                             int local);
52 void flush_hash_range(unsigned long context, unsigned long number, int local);
53
54 #endif /* _PPC64_TLBFLUSH_H */