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-rw-r--r--arch/arm/kernel/Makefile2
-rw-r--r--arch/arm/kernel/smp.c126
-rw-r--r--arch/arm/kernel/smp_tlb.c139
3 files changed, 140 insertions, 127 deletions
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 5b9b268f4fbb..659937b0a896 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -29,7 +29,7 @@ obj-$(CONFIG_MODULES) += armksyms.o module.o
29obj-$(CONFIG_ARTHUR) += arthur.o 29obj-$(CONFIG_ARTHUR) += arthur.o
30obj-$(CONFIG_ISA_DMA) += dma-isa.o 30obj-$(CONFIG_ISA_DMA) += dma-isa.o
31obj-$(CONFIG_PCI) += bios32.o isa.o 31obj-$(CONFIG_PCI) += bios32.o isa.o
32obj-$(CONFIG_SMP) += smp.o 32obj-$(CONFIG_SMP) += smp.o smp_tlb.o
33obj-$(CONFIG_HAVE_ARM_SCU) += smp_scu.o 33obj-$(CONFIG_HAVE_ARM_SCU) += smp_scu.o
34obj-$(CONFIG_HAVE_ARM_TWD) += smp_twd.o 34obj-$(CONFIG_HAVE_ARM_TWD) += smp_twd.o
35obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o 35obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 4dc864ef9cdf..6d0c66bc434d 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -38,7 +38,6 @@
38#include <asm/tlbflush.h> 38#include <asm/tlbflush.h>
39#include <asm/ptrace.h> 39#include <asm/ptrace.h>
40#include <asm/localtimer.h> 40#include <asm/localtimer.h>
41#include <asm/smp_plat.h>
42 41
43/* 42/*
44 * as from 2.5, kernels no longer have an init_tasks structure 43 * as from 2.5, kernels no longer have an init_tasks structure
@@ -655,128 +654,3 @@ int setup_profiling_timer(unsigned int multiplier)
655{ 654{
656 return -EINVAL; 655 return -EINVAL;
657} 656}
658
659static void
660on_each_cpu_mask(void (*func)(void *), void *info, int wait,
661 const struct cpumask *mask)
662{
663 preempt_disable();
664
665 smp_call_function_many(mask, func, info, wait);
666 if (cpumask_test_cpu(smp_processor_id(), mask))
667 func(info);
668
669 preempt_enable();
670}
671
672/**********************************************************************/
673
674/*
675 * TLB operations
676 */
677struct tlb_args {
678 struct vm_area_struct *ta_vma;
679 unsigned long ta_start;
680 unsigned long ta_end;
681};
682
683static inline void ipi_flush_tlb_all(void *ignored)
684{
685 local_flush_tlb_all();
686}
687
688static inline void ipi_flush_tlb_mm(void *arg)
689{
690 struct mm_struct *mm = (struct mm_struct *)arg;
691
692 local_flush_tlb_mm(mm);
693}
694
695static inline void ipi_flush_tlb_page(void *arg)
696{
697 struct tlb_args *ta = (struct tlb_args *)arg;
698
699 local_flush_tlb_page(ta->ta_vma, ta->ta_start);
700}
701
702static inline void ipi_flush_tlb_kernel_page(void *arg)
703{
704 struct tlb_args *ta = (struct tlb_args *)arg;
705
706 local_flush_tlb_kernel_page(ta->ta_start);
707}
708
709static inline void ipi_flush_tlb_range(void *arg)
710{
711 struct tlb_args *ta = (struct tlb_args *)arg;
712
713 local_flush_tlb_range(ta->ta_vma, ta->ta_start, ta->ta_end);
714}
715
716static inline void ipi_flush_tlb_kernel_range(void *arg)
717{
718 struct tlb_args *ta = (struct tlb_args *)arg;
719
720 local_flush_tlb_kernel_range(ta->ta_start, ta->ta_end);
721}
722
723void flush_tlb_all(void)
724{
725 if (tlb_ops_need_broadcast())
726 on_each_cpu(ipi_flush_tlb_all, NULL, 1);
727 else
728 local_flush_tlb_all();
729}
730
731void flush_tlb_mm(struct mm_struct *mm)
732{
733 if (tlb_ops_need_broadcast())
734 on_each_cpu_mask(ipi_flush_tlb_mm, mm, 1, mm_cpumask(mm));
735 else
736 local_flush_tlb_mm(mm);
737}
738
739void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr)
740{
741 if (tlb_ops_need_broadcast()) {
742 struct tlb_args ta;
743 ta.ta_vma = vma;
744 ta.ta_start = uaddr;
745 on_each_cpu_mask(ipi_flush_tlb_page, &ta, 1, mm_cpumask(vma->vm_mm));
746 } else
747 local_flush_tlb_page(vma, uaddr);
748}
749
750void flush_tlb_kernel_page(unsigned long kaddr)
751{
752 if (tlb_ops_need_broadcast()) {
753 struct tlb_args ta;
754 ta.ta_start = kaddr;
755 on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1);
756 } else
757 local_flush_tlb_kernel_page(kaddr);
758}
759
760void flush_tlb_range(struct vm_area_struct *vma,
761 unsigned long start, unsigned long end)
762{
763 if (tlb_ops_need_broadcast()) {
764 struct tlb_args ta;
765 ta.ta_vma = vma;
766 ta.ta_start = start;
767 ta.ta_end = end;
768 on_each_cpu_mask(ipi_flush_tlb_range, &ta, 1, mm_cpumask(vma->vm_mm));
769 } else
770 local_flush_tlb_range(vma, start, end);
771}
772
773void flush_tlb_kernel_range(unsigned long start, unsigned long end)
774{
775 if (tlb_ops_need_broadcast()) {
776 struct tlb_args ta;
777 ta.ta_start = start;
778 ta.ta_end = end;
779 on_each_cpu(ipi_flush_tlb_kernel_range, &ta, 1);
780 } else
781 local_flush_tlb_kernel_range(start, end);
782}
diff --git a/arch/arm/kernel/smp_tlb.c b/arch/arm/kernel/smp_tlb.c
new file mode 100644
index 000000000000..7dcb35285be7
--- /dev/null
+++ b/arch/arm/kernel/smp_tlb.c
@@ -0,0 +1,139 @@
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
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