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
enter_lazy_tlb(struct mm_struct * mm,struct task_struct * tsk)39 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
40 {
41 }
42
43 #endif
44