1 #ifndef _ASM_X8664_PERCPU_H_
2 #define _ASM_X8664_PERCPU_H_
3 #include <linux/compiler.h>
5 /* Same as asm-generic/percpu.h, except that we store the per cpu offset
6 in the PDA. Longer term the PDA and every per cpu variable
7 should be just put into a single section and referenced directly
14 #define __per_cpu_offset(cpu) (cpu_pda(cpu)->data_offset)
15 #define __my_cpu_offset() read_pda(data_offset)
17 #define per_cpu_offset(x) (__per_cpu_offset(x))
19 /* var is in discarded region: offset to particular copy we want */
20 #define per_cpu(var, cpu) (*({ \
21 extern int simple_identifier_##var(void); \
22 RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)); }))
23 #define __get_cpu_var(var) (*({ \
24 extern int simple_identifier_##var(void); \
25 RELOC_HIDE(&per_cpu__##var, __my_cpu_offset()); }))
26 #define __raw_get_cpu_var(var) (*({ \
27 extern int simple_identifier_##var(void); \
28 RELOC_HIDE(&per_cpu__##var, __my_cpu_offset()); }))
30 /* A macro to avoid #include hell... */
31 #define percpu_modcopy(pcpudst, src, size) \
34 for_each_possible_cpu(__i) \
35 memcpy((pcpudst)+__per_cpu_offset(__i), \
39 extern void setup_per_cpu_areas(void);
43 #define per_cpu(var, cpu) (*((void)(cpu), &per_cpu__##var))
44 #define __get_cpu_var(var) per_cpu__##var
45 #define __raw_get_cpu_var(var) per_cpu__##var
49 #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
51 #endif /* _ASM_X8664_PERCPU_H_ */