| /* | |
| * 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 <linux/mm_types.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 */ |