1 #ifndef _ASM_POWERPC_PERCPU_H_
2 #define _ASM_POWERPC_PERCPU_H_
4 #include <linux/compiler.h>
7 * Same as asm-generic/percpu.h, except that we store the per cpu offset
8 * in the paca. Based on the x86-64 implementation.
15 #define __per_cpu_offset(cpu) (paca[cpu].data_offset)
16 #define __my_cpu_offset() get_paca()->data_offset
18 /* Separate out the type, so (int[3], foo) works. */
19 #define DEFINE_PER_CPU(type, name) \
20 __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name
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, __my_cpu_offset()))
26 /* A macro to avoid #include hell... */
27 #define percpu_modcopy(pcpudst, src, size) \
30 for_each_possible_cpu(__i) \
31 memcpy((pcpudst)+__per_cpu_offset(__i), \
35 extern void setup_per_cpu_areas(void);
39 #define DEFINE_PER_CPU(type, name) \
40 __typeof__(type) per_cpu__##name
42 #define per_cpu(var, cpu) (*((void)(cpu), &per_cpu__##var))
43 #define __get_cpu_var(var) per_cpu__##var
47 #define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
49 #define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
50 #define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
53 #include <asm-generic/percpu.h>
56 #endif /* _ASM_POWERPC_PERCPU_H_ */