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| 1 | #ifndef __X86_PERCPU_H__ |
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| 2 | #define __X86_PERCPU_H__ |
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| 3 | |
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| 4 | #define PERCPU_SHIFT 12 |
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| 5 | #define PERCPU_SIZE (1UL << PERCPU_SHIFT) |
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| 6 | |
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| 7 | /* Separate out the type, so (int[3], foo) works. */ |
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| 8 | #define DEFINE_PER_CPU(type, name) \ |
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| 9 | __attribute__((__section__(".data.percpu"))) \ |
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| 10 | __typeof__(type) per_cpu__##name |
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| 11 | |
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| 12 | /* var is in discarded region: offset to particular copy we want */ |
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| 13 | #define per_cpu(var, cpu) \ |
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| 14 | (*RELOC_HIDE(&per_cpu__##var, ((unsigned int)(cpu))<<PERCPU_SHIFT)) |
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| 15 | #define __get_cpu_var(var) \ |
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| 16 | (per_cpu(var, smp_processor_id())) |
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| 17 | |
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| 18 | #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name |
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| 19 | |
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| 20 | #endif /* __X86_PERCPU_H__ */ |
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