include/asm-arm26/mmu_context.h

   1 /*
   2  *  linux/include/asm-arm/mmu_context.h
   3  *
   4  *  Copyright (C) 1996 Russell King.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  *  Changelog:
  11  *   27-06-1996 RMK     Created
  12  */
  13 #ifndef __ASM_ARM_MMU_CONTEXT_H
  14 #define __ASM_ARM_MMU_CONTEXT_H
  15
  16 #define init_new_context(tsk,mm)        0
  17 #define destroy_context(mm)             do { } while(0)
  18
  19 /*
  20  * This is called when "tsk" is about to enter lazy TLB mode.
  21  *
  22  * mm:  describes the currently active mm context
  23  * tsk: task which is entering lazy tlb
  24  * cpu: cpu number which is entering lazy tlb
  25  *
  26  * tsk->mm will be NULL
  27  */
  28 static inline void
  29 enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
  30 {
  31 }
  32
  33 /*
  34  * This is the actual mm switch as far as the scheduler
  35  * is concerned.  No registers are touched.
  36  */
  37 static inline void
  38 switch_mm(struct mm_struct *prev, struct mm_struct *next,
  39           struct task_struct *tsk)
  40 {
  41         cpu_switch_mm(next->pgd, next);
  42 }
  43
  44 #define deactivate_mm(tsk,mm)   do { } while (0)
  45
  46 static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
  47 {
  48         cpu_switch_mm(next->pgd, next);
  49 }
  50
  51 #endif