blob: 80bcb0a38e8adfbb7022ea9fff1a8e0f08534cc8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
#ifndef _ASM_IA64_TLBFLUSH_H
#define _ASM_IA64_TLBFLUSH_H
/*
* Copyright (C) 2002 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
*/
#include <linux/mm.h>
#include <asm/intrinsics.h>
#include <asm/mmu_context.h>
#include <asm/page.h>
/*
* Now for some TLB flushing routines. This is the kind of stuff that
* can be very expensive, so try to avoid them whenever possible.
*/
/*
* Flush everything (kernel mapping may also have changed due to
* vmalloc/vfree).
*/
extern void local_flush_tlb_all (void);
#ifdef CONFIG_SMP
extern void smp_flush_tlb_all (void);
extern void smp_flush_tlb_mm (struct mm_struct *mm);
extern void smp_flush_tlb_cpumask (cpumask_t xcpumask);
# define flush_tlb_all() smp_flush_tlb_all()
#else
# define flush_tlb_all() local_flush_tlb_all()
# define smp_flush_tlb_cpumask(m) local_flush_tlb_all()
#endif
static inline void
local_finish_flush_tlb_mm (struct mm_struct *mm)
{
if (mm == current->active_mm)
activate_context(mm);
}
/*
* Flush a specified user mapping. This is called, e.g., as a result of fork() and
* exit(). fork() ends up here because the copy-on-write mechanism needs to write-protect
* the PTEs of the parent task.
*/
static inline void
flush_tlb_mm (struct mm_struct *mm)
{
if (!mm)
return;
set_bit(mm->context, ia64_ctx.flushmap);
mm->context = 0;
if (atomic_read(&mm->mm_users) == 0)
return; /* happens as a result of exit_mmap() */
#ifdef CONFIG_SMP
smp_flush_tlb_mm(mm);
#else
local_finish_flush_tlb_mm(mm);
#endif
}
extern void flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long end);
/*
* Page-granular tlb flush.
*/
static inline void
flush_tlb_page (struct vm_area_struct *vma, unsigned long addr)
{
#ifdef CONFIG_SMP
flush_tlb_range(vma, (addr & PAGE_MASK), (addr & PAGE_MASK) + PAGE_SIZE);
#else
if (vma->vm_mm == current->active_mm)
ia64_ptcl(addr, (PAGE_SHIFT << 2));
else
vma->vm_mm->context = 0;
#endif
}
/*
* Flush the local TLB. Invoked from another cpu using an IPI.
*/
#ifdef CONFIG_SMP
void smp_local_flush_tlb(void);
#else
#define smp_local_flush_tlb()
#endif
#define flush_tlb_kernel_range(start, end) flush_tlb_all() /* XXX fix me */
#endif /* _ASM_IA64_TLBFLUSH_H */
|
