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/*
* Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
* Copyright (C) 1996, 1997, 1998, 1999 by Ralf Baechle
* Copyright (C) 1999 Silicon Graphics, Inc.
*
* based on MIPS asm/mmu_context.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _ASM_NIOS2_MMU_CONTEXT_H
#define _ASM_NIOS2_MMU_CONTEXT_H
#include <asm-generic/mm_hooks.h>
extern void mmu_context_init(void);
extern unsigned long get_pid_from_context(mm_context_t *ctx);
/*
* For the fast tlb miss handlers, we keep a pointer to the current pgd.
* processor.
*/
extern pgd_t *pgd_current;
static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
{
}
/*
* Initialize the context related info for a new mm_struct instance.
*
* Set all new contexts to 0, that way the generation will never match
* the currently running generation when this context is switched in.
*/
static inline int init_new_context(struct task_struct *tsk,
struct mm_struct *mm)
{
mm->context = 0;
return 0;
}
/*
* Destroy context related info for an mm_struct that is about
* to be put to rest.
*/
static inline void destroy_context(struct mm_struct *mm)
{
}
void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk);
static inline void deactivate_mm(struct task_struct *tsk,
struct mm_struct *mm)
{
}
/*
* After we have set current->mm to a new value, this activates
* the context for the new mm so we see the new mappings.
*/
void activate_mm(struct mm_struct *prev, struct mm_struct *next);
#endif /* _ASM_NIOS2_MMU_CONTEXT_H */