Linux kernel mirror (for testing)
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linux
1#ifndef __ARCH_SPARC64_PERCPU__
2#define __ARCH_SPARC64_PERCPU__
3
4#include <linux/compiler.h>
5
6#ifdef CONFIG_SMP
7
8extern void setup_per_cpu_areas(void);
9
10extern unsigned long __per_cpu_base;
11extern unsigned long __per_cpu_shift;
12#define __per_cpu_offset(__cpu) \
13 (__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
14#define per_cpu_offset(x) (__per_cpu_offset(x))
15
16/* Separate out the type, so (int[3], foo) works. */
17#define DEFINE_PER_CPU(type, name) \
18 __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name
19
20register unsigned long __local_per_cpu_offset asm("g5");
21
22/* var is in discarded region: offset to particular copy we want */
23#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)))
24#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
25#define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
26
27/* A macro to avoid #include hell... */
28#define percpu_modcopy(pcpudst, src, size) \
29do { \
30 unsigned int __i; \
31 for_each_possible_cpu(__i) \
32 memcpy((pcpudst)+__per_cpu_offset(__i), \
33 (src), (size)); \
34} while (0)
35#else /* ! SMP */
36
37#define DEFINE_PER_CPU(type, name) \
38 __typeof__(type) per_cpu__##name
39
40#define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var))
41#define __get_cpu_var(var) per_cpu__##var
42#define __raw_get_cpu_var(var) per_cpu__##var
43
44#endif /* SMP */
45
46#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
47
48#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
49#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
50
51#endif /* __ARCH_SPARC64_PERCPU__ */