2 * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
3 * Copyright (C) 1996, 1997, 1998, 1999 by Ralf Baechle
4 * Copyright (C) 1999 Silicon Graphics, Inc.
6 * based on MIPS asm/mmu_context.h
8 * This file is subject to the terms and conditions of the GNU General Public
9 * License. See the file "COPYING" in the main directory of this archive
13 #ifndef _ASM_NIOS2_MMU_CONTEXT_H
14 #define _ASM_NIOS2_MMU_CONTEXT_H
16 #include <linux/mm_types.h>
18 #include <asm-generic/mm_hooks.h>
20 extern void mmu_context_init(void);
21 extern unsigned long get_pid_from_context(mm_context_t *ctx);
24 * For the fast tlb miss handlers, we keep a pointer to the current pgd.
27 extern pgd_t *pgd_current;
29 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
34 * Initialize the context related info for a new mm_struct instance.
36 * Set all new contexts to 0, that way the generation will never match
37 * the currently running generation when this context is switched in.
39 static inline int init_new_context(struct task_struct *tsk,
47 * Destroy context related info for an mm_struct that is about
50 static inline void destroy_context(struct mm_struct *mm)
54 void switch_mm(struct mm_struct *prev, struct mm_struct *next,
55 struct task_struct *tsk);
57 static inline void deactivate_mm(struct task_struct *tsk,
63 * After we have set current->mm to a new value, this activates
64 * the context for the new mm so we see the new mappings.
66 void activate_mm(struct mm_struct *prev, struct mm_struct *next);
68 #endif /* _ASM_NIOS2_MMU_CONTEXT_H */