Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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
8#define setup_per_cpu_areas() do { } while (0)
9extern void real_setup_per_cpu_areas(void);
10
11extern unsigned long __per_cpu_base;
12extern unsigned long __per_cpu_shift;
13#define __per_cpu_offset(__cpu) \
14 (__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
15#define per_cpu_offset(x) (__per_cpu_offset(x))
16
17/* Separate out the type, so (int[3], foo) works. */
18#define DEFINE_PER_CPU(type, name) \
19 __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name
20
21register unsigned long __local_per_cpu_offset asm("g5");
22
23/* var is in discarded region: offset to particular copy we want */
24#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)))
25#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
26#define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
27
28/* A macro to avoid #include hell... */
29#define percpu_modcopy(pcpudst, src, size) \
30do { \
31 unsigned int __i; \
32 for_each_possible_cpu(__i) \
33 memcpy((pcpudst)+__per_cpu_offset(__i), \
34 (src), (size)); \
35} while (0)
36#else /* ! SMP */
37
38#define real_setup_per_cpu_areas() do { } while (0)
39#define DEFINE_PER_CPU(type, name) \
40 __typeof__(type) per_cpu__##name
41
42#define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var))
43#define __get_cpu_var(var) per_cpu__##var
44#define __raw_get_cpu_var(var) per_cpu__##var
45
46#endif /* SMP */
47
48#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
49
50#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
51#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
52
53#endif /* __ARCH_SPARC64_PERCPU__ */