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