LXR linux/include/asm-arm26/mmu

   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 */
  28static inline void
  29enter_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 */
  37static inline void
  38switch_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
  46static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next)
  47{
  48        cpu_switch_mm(next->pgd, next);
  49}
  50
  51#endif
  52