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1da177e4 LT |
1 | /* |
2 | * linux/include/asm-arm/mmu_context.h | |
3 | * | |
4 | * Copyright (C) 1996 Russell King. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * Changelog: | |
11 | * 27-06-1996 RMK Created | |
12 | */ | |
13 | #ifndef __ASM_ARM_MMU_CONTEXT_H | |
14 | #define __ASM_ARM_MMU_CONTEXT_H | |
15 | ||
16 | #define init_new_context(tsk,mm) 0 | |
17 | #define destroy_context(mm) do { } while(0) | |
18 | ||
19 | /* | |
20 | * This is called when "tsk" is about to enter lazy TLB mode. | |
21 | * | |
22 | * mm: describes the currently active mm context | |
23 | * tsk: task which is entering lazy tlb | |
24 | * cpu: cpu number which is entering lazy tlb | |
25 | * | |
26 | * tsk->mm will be NULL | |
27 | */ | |
28 | static inline void | |
29 | enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) | |
30 | { | |
31 | } | |
32 | ||
33 | /* | |
34 | * This is the actual mm switch as far as the scheduler | |
35 | * is concerned. No registers are touched. | |
36 | */ | |
37 | static inline void | |
38 | switch_mm(struct mm_struct *prev, struct mm_struct *next, | |
39 | struct task_struct *tsk) | |
40 | { | |
41 | cpu_switch_mm(next->pgd, next); | |
42 | } | |
43 | ||
44 | #define deactivate_mm(tsk,mm) do { } while (0) | |
45 | ||
46 | static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next) | |
47 | { | |
48 | cpu_switch_mm(next->pgd, next); | |
49 | } | |
50 | ||
51 | #endif |