tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
4 */
5
6#ifndef __UM_MMU_CONTEXT_H
7#define __UM_MMU_CONTEXT_H
8
9#include "linux/sched.h"
10#include "linux/config.h"
11#include "choose-mode.h"
12#include "um_mmu.h"
13
14#define get_mmu_context(task) do ; while(0)
15#define activate_context(tsk) do ; while(0)
16
17#define deactivate_mm(tsk,mm) do { } while (0)
18
19extern void force_flush_all(void);
20
21static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
22{
23 if (old != new)
24 force_flush_all();
25}
26
27static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
28 struct task_struct *tsk)
29{
30 unsigned cpu = smp_processor_id();
31
32 if(prev != next){
33 cpu_clear(cpu, prev->cpu_vm_mask);
34 cpu_set(cpu, next->cpu_vm_mask);
35 if(next != &init_mm)
36 CHOOSE_MODE((void) 0,
37 switch_mm_skas(&next->context.skas.id));
38 }
39}
40
41static inline void enter_lazy_tlb(struct mm_struct *mm,
42 struct task_struct *tsk)
43{
44}
45
46extern int init_new_context_skas(struct task_struct *task,
47 struct mm_struct *mm);
48
49static inline int init_new_context_tt(struct task_struct *task,
50 struct mm_struct *mm)
51{
52 return(0);
53}
54
55static inline int init_new_context(struct task_struct *task,
56 struct mm_struct *mm)
57{
58 return(CHOOSE_MODE_PROC(init_new_context_tt, init_new_context_skas,
59 task, mm));
60}
61
62extern void destroy_context_skas(struct mm_struct *mm);
63
64static inline void destroy_context(struct mm_struct *mm)
65{
66 CHOOSE_MODE((void) 0, destroy_context_skas(mm));
67}
68
69#endif
70
71/*
72 * Overrides for Emacs so that we follow Linus's tabbing style.
73 * Emacs will notice this stuff at the end of the file and automatically
74 * adjust the settings for this buffer only. This must remain at the end
75 * of the file.
76 * ---------------------------------------------------------------------------
77 * Local variables:
78 * c-file-style: "linux"
79 * End:
80 */