#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
#define DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \
__attribute__((__section__(".data.percpu.shared_aligned"))) \
__typeof__(type) per_cpu__##name \
____cacheline_internodealigned_in_smp
/* var is in discarded region: offset to particular copy we want */
#define per_cpu(var, cpu) (*({ \
extern int simple_identifier_##var(void); \
RELOC_HIDE(&per_cpu__##var, __per_cpu_offset(cpu)); }))
#define __get_cpu_var(var) (*({ \
extern int simple_identifier_##var(void); \
RELOC_HIDE(&per_cpu__##var, __my_cpu_offset()); }))
#define __raw_get_cpu_var(var) (*({ \
extern int simple_identifier_##var(void); \
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 DEFINE_PER_CPU_SHARED_ALIGNED(type, name) \
DEFINE_PER_CPU(type, 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_ */
