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kernel/linux-rt-4.4.41/arch/openrisc/include/asm/mmu_context.h 1.3 KB
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  /*
   * OpenRISC Linux
   *
   * Linux architectural port borrowing liberally from similar works of
   * others.  All original copyrights apply as per the original source
   * declaration.
   *
   * OpenRISC implementation:
   * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
   * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
   * et al.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   */
  
  #ifndef __ASM_OPENRISC_MMU_CONTEXT_H
  #define __ASM_OPENRISC_MMU_CONTEXT_H
  
  #include <asm-generic/mm_hooks.h>
  
  extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
  extern void destroy_context(struct mm_struct *mm);
  extern void switch_mm(struct mm_struct *prev, struct mm_struct *next,
  		      struct task_struct *tsk);
  
  #define deactivate_mm(tsk, mm)	do { } while (0)
  
  #define activate_mm(prev, next) switch_mm((prev), (next), NULL)
  
  /* current active pgd - this is similar to other processors pgd
   * registers like cr3 on the i386
   */
  
  extern volatile pgd_t *current_pgd;   /* defined in arch/openrisc/mm/fault.c */
  
  static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
  {
  }
  
  #endif