1 /*
2  * Copyright (C) 2012 Regents of the University of California
3  * Copyright (C) 2017 SiFive
4  *
5  *   This program is free software; you can redistribute it and/or
6  *   modify it under the terms of the GNU General Public License
7  *   as published by the Free Software Foundation, version 2.
8  *
9  *   This program is distributed in the hope that it will be useful,
10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  *   GNU General Public License for more details.
13  */
14 
15 #ifndef _ASM_RISCV_MMU_CONTEXT_H
16 #define _ASM_RISCV_MMU_CONTEXT_H
17 
18 #include <linux/mm_types.h>
19 #include <asm-generic/mm_hooks.h>
20 
21 #include <linux/mm.h>
22 #include <linux/sched.h>
23 
24 static inline void enter_lazy_tlb(struct mm_struct *mm,
25 	struct task_struct *task)
26 {
27 }
28 
29 /* Initialize context-related info for a new mm_struct */
30 static inline int init_new_context(struct task_struct *task,
31 	struct mm_struct *mm)
32 {
33 	return 0;
34 }
35 
36 static inline void destroy_context(struct mm_struct *mm)
37 {
38 }
39 
40 void switch_mm(struct mm_struct *prev, struct mm_struct *next,
41 	struct task_struct *task);
42 
43 static inline void activate_mm(struct mm_struct *prev,
44 			       struct mm_struct *next)
45 {
46 	switch_mm(prev, next, NULL);
47 }
48 
49 static inline void deactivate_mm(struct task_struct *task,
50 	struct mm_struct *mm)
51 {
52 }
53 
54 #endif /* _ASM_RISCV_MMU_CONTEXT_H */
55