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Linux/arch/frv/include/asm/tlbflush.h

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  1 /* tlbflush.h: TLB flushing functions
  2  *
  3  * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
  4  * Written by David Howells (dhowells@redhat.com)
  5  *
  6  * This program is free software; you can redistribute it and/or
  7  * modify it under the terms of the GNU General Public License
  8  * as published by the Free Software Foundation; either version
  9  * 2 of the License, or (at your option) any later version.
 10  */
 11 
 12 #ifndef _ASM_TLBFLUSH_H
 13 #define _ASM_TLBFLUSH_H
 14 
 15 #include <linux/mm.h>
 16 #include <asm/processor.h>
 17 
 18 #ifdef CONFIG_MMU
 19 
 20 #ifndef __ASSEMBLY__
 21 extern void asmlinkage __flush_tlb_all(void);
 22 extern void asmlinkage __flush_tlb_mm(unsigned long contextid);
 23 extern void asmlinkage __flush_tlb_page(unsigned long contextid, unsigned long start);
 24 extern void asmlinkage __flush_tlb_range(unsigned long contextid,
 25                                          unsigned long start, unsigned long end);
 26 #endif /* !__ASSEMBLY__ */
 27 
 28 #define flush_tlb_all()                         \
 29 do {                                            \
 30         preempt_disable();                      \
 31         __flush_tlb_all();                      \
 32         preempt_enable();                       \
 33 } while(0)
 34 
 35 #define flush_tlb_mm(mm)                        \
 36 do {                                            \
 37         preempt_disable();                      \
 38         __flush_tlb_mm((mm)->context.id);       \
 39         preempt_enable();                       \
 40 } while(0)
 41 
 42 #define flush_tlb_range(vma,start,end)                                  \
 43 do {                                                                    \
 44         preempt_disable();                                              \
 45         __flush_tlb_range((vma)->vm_mm->context.id, start, end);        \
 46         preempt_enable();                                               \
 47 } while(0)
 48 
 49 #define flush_tlb_page(vma,addr)                                \
 50 do {                                                            \
 51         preempt_disable();                                      \
 52         __flush_tlb_page((vma)->vm_mm->context.id, addr);       \
 53         preempt_enable();                                       \
 54 } while(0)
 55 
 56 
 57 #define __flush_tlb_global()                    flush_tlb_all()
 58 #define flush_tlb()                             flush_tlb_all()
 59 #define flush_tlb_kernel_range(start, end)      flush_tlb_all()
 60 
 61 #else
 62 
 63 #define flush_tlb()                             BUG()
 64 #define flush_tlb_all()                         BUG()
 65 #define flush_tlb_mm(mm)                        BUG()
 66 #define flush_tlb_page(vma,addr)                BUG()
 67 #define flush_tlb_range(mm,start,end)           BUG()
 68 #define flush_tlb_kernel_range(start, end)      BUG()
 69 
 70 #endif
 71 
 72 
 73 #endif /* _ASM_TLBFLUSH_H */
 74 

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