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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
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
19register 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) \
27do { \
28 unsigned int __i; \
29 for (__i = 0; __i < NR_CPUS; __i++) \
30 if (cpu_possible(__i)) \
31 memcpy((pcpudst)+__per_cpu_offset(__i), \
32 (src), (size)); \
33} while (0)
34#else /* ! SMP */
35
36#define DEFINE_PER_CPU(type, name) \
37 __typeof__(type) per_cpu__##name
38
39#define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var))
40#define __get_cpu_var(var) per_cpu__##var
41
42#endif /* SMP */
43
44#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
45
46#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
47#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
48
49#endif /* __ARCH_SPARC64_PERCPU__ */