1 #ifndef _ASM_GENERIC_PERCPU_H_
2 #define _ASM_GENERIC_PERCPU_H_
3 #include <linux/compiler.h>
4 #include <linux/threads.h>
8 extern unsigned long __per_cpu_offset[NR_CPUS];
10 #define per_cpu_offset(x) (__per_cpu_offset[x])
12 /* var is in discarded region: offset to particular copy we want */
13 #define per_cpu(var, cpu) (*({ \
14 extern int simple_identifier_##var(void); \
15 RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]); }))
16 #define __get_cpu_var(var) per_cpu(var, smp_processor_id())
17 #define __raw_get_cpu_var(var) per_cpu(var, raw_smp_processor_id())
19 /* A macro to avoid #include hell... */
20 #define percpu_modcopy(pcpudst, src, size) \
23 for_each_possible_cpu(__i) \
24 memcpy((pcpudst)+__per_cpu_offset[__i], \
29 #define per_cpu(var, cpu) (*((void)(cpu), &per_cpu__##var))
30 #define __get_cpu_var(var) per_cpu__##var
31 #define __raw_get_cpu_var(var) per_cpu__##var
35 #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
37 #endif /* _ASM_GENERIC_PERCPU_H_ */