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1/*
2 * linux/arch/arm/kernel/smp_tlb.c
3 *
4 * Copyright (C) 2002 ARM Limited, All Rights Reserved.
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#include <linux/preempt.h>
11#include <linux/smp.h>
12
13#include <asm/smp_plat.h>
14#include <asm/tlbflush.h>
15
16static void on_each_cpu_mask(void (*func)(void *), void *info, int wait,
17 const struct cpumask *mask)
18{
19 preempt_disable();
20
21 smp_call_function_many(mask, func, info, wait);
22 if (cpumask_test_cpu(smp_processor_id(), mask))
23 func(info);
24
25 preempt_enable();
26}
27
28/**********************************************************************/
29
30/*
31 * TLB operations
32 */
33struct tlb_args {
34 struct vm_area_struct *ta_vma;
35 unsigned long ta_start;
36 unsigned long ta_end;
37};
38
39static inline void ipi_flush_tlb_all(void *ignored)
40{
41 local_flush_tlb_all();
42}
43
44static inline void ipi_flush_tlb_mm(void *arg)
45{
46 struct mm_struct *mm = (struct mm_struct *)arg;
47
48 local_flush_tlb_mm(mm);
49}
50
51static inline void ipi_flush_tlb_page(void *arg)
52{
53 struct tlb_args *ta = (struct tlb_args *)arg;
54
55 local_flush_tlb_page(ta->ta_vma, ta->ta_start);
56}
57
58static inline void ipi_flush_tlb_kernel_page(void *arg)
59{
60 struct tlb_args *ta = (struct tlb_args *)arg;
61
62 local_flush_tlb_kernel_page(ta->ta_start);
63}
64
65static inline void ipi_flush_tlb_range(void *arg)
66{
67 struct tlb_args *ta = (struct tlb_args *)arg;
68
69 local_flush_tlb_range(ta->ta_vma, ta->ta_start, ta->ta_end);
70}
71
72static inline void ipi_flush_tlb_kernel_range(void *arg)
73{
74 struct tlb_args *ta = (struct tlb_args *)arg;
75
76 local_flush_tlb_kernel_range(ta->ta_start, ta->ta_end);
77}
78
79void flush_tlb_all(void)
80{
81 if (tlb_ops_need_broadcast())
82 on_each_cpu(ipi_flush_tlb_all, NULL, 1);
83 else
84 local_flush_tlb_all();
85}
86
87void flush_tlb_mm(struct mm_struct *mm)
88{
89 if (tlb_ops_need_broadcast())
90 on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, mm_cpumask(mm));
91 else
92 local_flush_tlb_mm(mm);
93}
94
95void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
96{
97 if (tlb_ops_need_broadcast()) {
98 struct tlb_args ta;
99 ta.ta_vma = vma;
100 ta.ta_start = uaddr;
101 on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, mm_cpumask(vma->vm_mm));
102 } else
103 local_flush_tlb_page(vma, uaddr);
104}
105
106void flush_tlb_kernel_page(unsigned long kaddr)
107{
108 if (tlb_ops_need_broadcast()) {
109 struct tlb_args ta;
110 ta.ta_start = kaddr;
111 on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1);
112 } else
113 local_flush_tlb_kernel_page(kaddr);
114}
115
116void flush_tlb_range(struct vm_area_struct *vma,
117 unsigned long start, unsigned long end)
118{
119 if (tlb_ops_need_broadcast()) {
120 struct tlb_args ta;
121 ta.ta_vma = vma;
122 ta.ta_start = start;
123 ta.ta_end = end;
124 on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, mm_cpumask(vma->vm_mm));
125 } else
126 local_flush_tlb_range(vma, start, end);
127}
128
129void flush_tlb_kernel_range(unsigned long start, unsigned long end)
130{
131 if (tlb_ops_need_broadcast()) {
132 struct tlb_args ta;
133 ta.ta_start = start;
134 ta.ta_end = end;
135 on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
136 } else
137 local_flush_tlb_kernel_range(start, end);
138}
139
1/*
2 * linux/arch/arm/kernel/smp_tlb.c
3 *
4 * Copyright (C) 2002 ARM Limited, All Rights Reserved.
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#include <linux/preempt.h>
11#include <linux/smp.h>
12
13#include <asm/smp_plat.h>
14#include <asm/tlbflush.h>
15
16static void on_each_cpu_mask(void (*func)(void *), void *info, int wait,
17 const struct cpumask *mask)
18{
19 preempt_disable();
20
21 smp_call_function_many(mask, func, info, wait);
22 if (cpumask_test_cpu(smp_processor_id(), mask))
23 func(info);
24
25 preempt_enable();
26}
27
28/**********************************************************************/
29
30/*
31 * TLB operations
32 */
33struct tlb_args {
34 struct vm_area_struct *ta_vma;
35 unsigned long ta_start;
36 unsigned long ta_end;
37};
38
39static inline void ipi_flush_tlb_all(void *ignored)
40{
41 local_flush_tlb_all();
42}
43
44static inline void ipi_flush_tlb_mm(void *arg)
45{
46 struct mm_struct *mm = (struct mm_struct *)arg;
47
48 local_flush_tlb_mm(mm);
49}
50
51static inline void ipi_flush_tlb_page(void *arg)
52{
53 struct tlb_args *ta = (struct tlb_args *)arg;
54
55 local_flush_tlb_page(ta->ta_vma, ta->ta_start);
56}
57
58static inline void ipi_flush_tlb_kernel_page(void *arg)
59{
60 struct tlb_args *ta = (struct tlb_args *)arg;
61
62 local_flush_tlb_kernel_page(ta->ta_start);
63}
64
65static inline void ipi_flush_tlb_range(void *arg)
66{
67 struct tlb_args *ta = (struct tlb_args *)arg;
68
69 local_flush_tlb_range(ta->ta_vma, ta->ta_start, ta->ta_end);
70}
71
72static inline void ipi_flush_tlb_kernel_range(void *arg)
73{
74 struct tlb_args *ta = (struct tlb_args *)arg;
75
76 local_flush_tlb_kernel_range(ta->ta_start, ta->ta_end);
77}
78
79void flush_tlb_all(void)
80{
81 if (tlb_ops_need_broadcast())
82 on_each_cpu(ipi_flush_tlb_all, NULL, 1);
83 else
84 local_flush_tlb_all();
85}
86
87void flush_tlb_mm(struct mm_struct *mm)
88{
89 if (tlb_ops_need_broadcast())
90 on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, mm_cpumask(mm));
91 else
92 local_flush_tlb_mm(mm);
93}
94
95void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
96{
97 if (tlb_ops_need_broadcast()) {
98 struct tlb_args ta;
99 ta.ta_vma = vma;
100 ta.ta_start = uaddr;
101 on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, mm_cpumask(vma->vm_mm));
102 } else
103 local_flush_tlb_page(vma, uaddr);
104}
105
106void flush_tlb_kernel_page(unsigned long kaddr)
107{
108 if (tlb_ops_need_broadcast()) {
109 struct tlb_args ta;
110 ta.ta_start = kaddr;
111 on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1);
112 } else
113 local_flush_tlb_kernel_page(kaddr);
114}
115
116void flush_tlb_range(struct vm_area_struct *vma,
117 unsigned long start, unsigned long end)
118{
119 if (tlb_ops_need_broadcast()) {
120 struct tlb_args ta;
121 ta.ta_vma = vma;
122 ta.ta_start = start;
123 ta.ta_end = end;
124 on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, mm_cpumask(vma->vm_mm));
125 } else
126 local_flush_tlb_range(vma, start, end);
127}
128
129void flush_tlb_kernel_range(unsigned long start, unsigned long end)
130{
131 if (tlb_ops_need_broadcast()) {
132 struct tlb_args ta;
133 ta.ta_start = start;
134 ta.ta_end = end;
135 on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
136 } else
137 local_flush_tlb_kernel_range(start, end);
138}
139