blob: cc1cbf656b02f343e60199c79ec50fb26cb53665 [file] [log] [blame]
#ifndef _ASM_POWERPC_PERCPU_H_
#define _ASM_POWERPC_PERCPU_H_
#ifdef __powerpc64__
#include <linux/compiler.h>
/*
* Same as asm-generic/percpu.h, except that we store the per cpu offset
* in the paca. Based on the x86-64 implementation.
*/
#ifdef CONFIG_SMP
#include <asm/paca.h>
#define __per_cpu_offset(cpu) (paca[cpu].data_offset)
#define __my_cpu_offset() get_paca()->data_offset
#define per_cpu_offset(x) (__per_cpu_offset(x))
/* var is in discarded region: offset to particular copy we want */
#define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)))
#define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __my_cpu_offset()))
#define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, local_paca->data_offset))
/* A macro to avoid #include hell... */
#define percpu_modcopy(pcpudst, src, size) \
do { \
unsigned int __i; \
for_each_possible_cpu(__i) \
memcpy((pcpudst)+__per_cpu_offset(__i), \
(src), (size)); \
} while (0)
extern void setup_per_cpu_areas(void);
#else /* ! SMP */
#define per_cpu(var, cpu) (*((void)(cpu), &per_cpu__##var))
#define __get_cpu_var(var) per_cpu__##var
#define __raw_get_cpu_var(var) per_cpu__##var
#endif /* SMP */
#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
#else
#include <asm-generic/percpu.h>
#endif
#endif /* _ASM_POWERPC_PERCPU_H_ */