1 /*
2  * OpenRISC Linux
3  *
4  * Linux architectural port borrowing liberally from similar works of
5  * others.  All original copyrights apply as per the original source
6  * declaration.
7  *
8  * OpenRISC implementation:
9  * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
10  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
11  * et al.
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License as published by
15  * the Free Software Foundation; either version 2 of the License, or
16  * (at your option) any later version.
17  */
18 
19 #ifndef __ASM_OPENRISC_MMU_CONTEXT_H
20 #define __ASM_OPENRISC_MMU_CONTEXT_H
21 
22 #include <asm-generic/mm_hooks.h>
23 
24 extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
25 extern void destroy_context(struct mm_struct *mm);
26 extern void switch_mm(struct mm_struct *prev, struct mm_struct *next,
27 		      struct task_struct *tsk);
28 
29 #define deactivate_mm(tsk, mm)	do { } while (0)
30 
31 #define activate_mm(prev, next) switch_mm((prev), (next), NULL)
32 
33 /* current active pgd - this is similar to other processors pgd
34  * registers like cr3 on the i386
35  */
36 
37 extern volatile pgd_t *current_pgd[]; /* defined in arch/openrisc/mm/fault.c */
38 
39 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
40 {
41 }
42 
43 #endif
44