1#ifndef _LINUX_PERCPU_DEFS_H
2#define _LINUX_PERCPU_DEFS_H
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14#define __PCPU_ATTRS(sec) \
15 __percpu __attribute__((section(PER_CPU_BASE_SECTION sec))) \
16 PER_CPU_ATTRIBUTES
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18#define __PCPU_DUMMY_ATTRS \
19 __attribute__((section(".discard"), unused))
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26#define __verify_pcpu_ptr(ptr) do { \
27 const void __percpu *__vpp_verify = (typeof(ptr))NULL; \
28 (void)__vpp_verify; \
29} while (0)
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50#if defined(ARCH_NEEDS_WEAK_PER_CPU) || defined(CONFIG_DEBUG_FORCE_WEAK_PER_CPU)
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61#define DECLARE_PER_CPU_SECTION(type, name, sec) \
62 extern __PCPU_DUMMY_ATTRS char __pcpu_scope_##name; \
63 extern __PCPU_ATTRS(sec) __typeof__(type) name
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65#define DEFINE_PER_CPU_SECTION(type, name, sec) \
66 __PCPU_DUMMY_ATTRS char __pcpu_scope_##name; \
67 extern __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
68 __PCPU_DUMMY_ATTRS char __pcpu_unique_##name; \
69 __PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES __weak \
70 __typeof__(type) name
71#else
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75#define DECLARE_PER_CPU_SECTION(type, name, sec) \
76 extern __PCPU_ATTRS(sec) __typeof__(type) name
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78#define DEFINE_PER_CPU_SECTION(type, name, sec) \
79 __PCPU_ATTRS(sec) PER_CPU_DEF_ATTRIBUTES \
80 __typeof__(type) name
81#endif
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87#define DECLARE_PER_CPU(type, name) \
88 DECLARE_PER_CPU_SECTION(type, name, "")
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90#define DEFINE_PER_CPU(type, name) \
91 DEFINE_PER_CPU_SECTION(type, name, "")
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97#define DECLARE_PER_CPU_FIRST(type, name) \
98 DECLARE_PER_CPU_SECTION(type, name, PER_CPU_FIRST_SECTION)
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100#define DEFINE_PER_CPU_FIRST(type, name) \
101 DEFINE_PER_CPU_SECTION(type, name, PER_CPU_FIRST_SECTION)
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114#define DECLARE_PER_CPU_SHARED_ALIGNED(type, name) \
115 DECLARE_PER_CPU_SECTION(type, name, PER_CPU_SHARED_ALIGNED_SECTION) \
116 ____cacheline_aligned_in_smp
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118#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \
119 DEFINE_PER_CPU_SECTION(type, name, PER_CPU_SHARED_ALIGNED_SECTION) \
120 ____cacheline_aligned_in_smp
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122#define DECLARE_PER_CPU_ALIGNED(type, name) \
123 DECLARE_PER_CPU_SECTION(type, name, PER_CPU_ALIGNED_SECTION) \
124 ____cacheline_aligned
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126#define DEFINE_PER_CPU_ALIGNED(type, name) \
127 DEFINE_PER_CPU_SECTION(type, name, PER_CPU_ALIGNED_SECTION) \
128 ____cacheline_aligned
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133#define DECLARE_PER_CPU_PAGE_ALIGNED(type, name) \
134 DECLARE_PER_CPU_SECTION(type, name, "..page_aligned") \
135 __aligned(PAGE_SIZE)
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137#define DEFINE_PER_CPU_PAGE_ALIGNED(type, name) \
138 DEFINE_PER_CPU_SECTION(type, name, "..page_aligned") \
139 __aligned(PAGE_SIZE)
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144#define DECLARE_PER_CPU_READ_MOSTLY(type, name) \
145 DECLARE_PER_CPU_SECTION(type, name, "..readmostly")
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147#define DEFINE_PER_CPU_READ_MOSTLY(type, name) \
148 DEFINE_PER_CPU_SECTION(type, name, "..readmostly")
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155#ifndef __CHECKER__
156#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(var)
157#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(var)
158#else
159#define EXPORT_PER_CPU_SYMBOL(var)
160#define EXPORT_PER_CPU_SYMBOL_GPL(var)
161#endif
162
163#endif
164