[linux-2.6-block.git] / include / asm-sparc64 / percpu.h

#ifndef __ARCH_SPARC64_PERCPU__
#define __ARCH_SPARC64_PERCPU__

#include <linux/compiler.h>

#ifdef CONFIG_SMP

extern void setup_per_cpu_areas(void);

extern unsigned long __per_cpu_base;
extern unsigned long __per_cpu_shift;
#define __per_cpu_offset(__cpu) \
	(__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
#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

register unsigned long __local_per_cpu_offset asm("g5");

/* 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, __local_per_cpu_offset))
#define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_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)
#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 /* __ARCH_SPARC64_PERCPU__ */
Commit	Line	Data
1da177e4 LT	1	#ifndef __ARCH_SPARC64_PERCPU__
	2	#define __ARCH_SPARC64_PERCPU__
	3
	4	#include <linux/compiler.h>
	5
	6	#ifdef CONFIG_SMP
	7
	8	extern void setup_per_cpu_areas(void);
	9
	10	extern unsigned long __per_cpu_base;
	11	extern unsigned long __per_cpu_shift;
	12	#define __per_cpu_offset(__cpu) \
	13	(__per_cpu_base + ((unsigned long)(__cpu) << __per_cpu_shift))
a875a69f	14	#define per_cpu_offset(x) (__per_cpu_offset(x))
1da177e4 LT	15
	16	/* Separate out the type, so (int[3], foo) works. */
	17	#define DEFINE_PER_CPU(type, name) \
	18	__attribute__((__section__(".data.percpu"))) __typeof__(type) per_cpu__##name
	19
	20	register unsigned long __local_per_cpu_offset asm("g5");
	21
	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, __local_per_cpu_offset))
bfe5d834	25	#define __raw_get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __local_per_cpu_offset))
1da177e4 LT	26
	27	/* A macro to avoid #include hell... */
	28	#define percpu_modcopy(pcpudst, src, size) \
	29	do { \
	30	unsigned int __i; \
a283a525	31	for_each_possible_cpu(__i) \
394e3902 AM	32	memcpy((pcpudst)+__per_cpu_offset(__i), \
394e3902 AM	33	(src), (size)); \
1da177e4 LT	34	} while (0)
	35	#else /* ! SMP */
	36
	37	#define DEFINE_PER_CPU(type, name) \
	38	__typeof__(type) per_cpu__##name
	39
	40	#define per_cpu(var, cpu) (*((void)cpu, &per_cpu__##var))
	41	#define __get_cpu_var(var) per_cpu__##var
bfe5d834	42	#define __raw_get_cpu_var(var) per_cpu__##var
1da177e4 LT	43
	44	#endif /* SMP */
	45
	46	#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu__##name
	47
	48	#define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
	49	#define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
	50
	51	#endif /* __ARCH_SPARC64_PERCPU__ */