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1da177e4 LT |
1 | #ifndef __ARCH_SPARC64_PERCPU__ |
2 | #define __ARCH_SPARC64_PERCPU__ | |
3 | ||
4 | #include <linux/compiler.h> | |
5 | ||
6 | #ifdef CONFIG_SMP | |
7 | ||
8 | extern void setup_per_cpu_areas(void); | |
9 | ||
10 | extern unsigned long __per_cpu_base; | |
11 | extern unsigned long __per_cpu_shift; | |
12 | #define __per_cpu_offset(__cpu) \ | |
13 | (__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift)) | |
14 | ||
15 | /* Separate out the type, so (int[3], foo) works. */ | |
16 | #define DEFINE_PER_CPU(type, name) \ | |
17 | __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name | |
18 | ||
19 | register unsigned long __local_per_cpu_offset asm("g5"); | |
20 | ||
21 | /* var is in discarded region: offset to particular copy we want */ | |
22 | #define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu))) | |
23 | #define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset)) | |
24 | ||
25 | /* A macro to avoid #include hell... */ | |
26 | #define percpu_modcopy(pcpudst, src, size) \ | |
27 | do { \ | |
28 | unsigned int __i; \ | |
a283a525 | 29 | for_each_possible_cpu(__i) \ |
394e3902 AM |
30 | memcpy((pcpudst)+__per_cpu_offset(__i), \ |
31 | (src), (size)); \ | |
1da177e4 LT |
32 | } while (0) |
33 | #else /* ! SMP */ | |
34 | ||
35 | #define DEFINE_PER_CPU(type, name) \ | |
36 | __typeof__(type) per_cpu__##name | |
37 | ||
38 | #define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var)) | |
39 | #define __get_cpu_var(var) per_cpu__##var | |
40 | ||
41 | #endif /* SMP */ | |
42 | ||
43 | #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name | |
44 | ||
45 | #define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var) | |
46 | #define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var) | |
47 | ||
48 | #endif /* __ARCH_SPARC64_PERCPU__ */ |