#ifndef _ASM_X8664_PERCPU_H_

#define _ASM_X8664_PERCPU_H_

#include <linux/compiler.h>

/* Same as asm-generic/percpu.h, except that we store the per cpu offset

   in the PDA. Longer term the PDA and every per cpu variable

   should be just put into a single section and referenced directly

   from %gs */

#ifdef CONFIG_SMP

#include <asm/pda.h>

#define __per_cpu_offset(cpu) (cpu_pda(cpu)->data_offset)

#define __my_cpu_offset() read_pda(data_offset)

#define per_cpu_offset(x) (__per_cpu_offset(x))

/* Separate out the type, so (int[3], foo) works. */

#define DEFINE_PER_CPU(type, name) \

    __attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name

/* 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, __my_cpu_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 DEFINE_PER_CPU(type, name) \

    __typeof__(type) per_cpu__##name

#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

#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)

#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)

#endif /* _ASM_X8664_PERCPU_H_ */