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- #ifndef _ASM_IA64_PERCPU_H
- #define _ASM_IA64_PERCPU_H
-
- /*
- * Copyright (C) 2002-2003 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@hpl.hp.com>
- */
-
- #define PERCPU_ENOUGH_ROOM PERCPU_PAGE_SIZE
-
- #ifdef __ASSEMBLY__
- # define THIS_CPU(var) (per_cpu__##var) /* use this to mark accesses to per-CPU variables... */
- #else /* !__ASSEMBLY__ */
-
-
- #include <linux/threads.h>
-
- #ifdef HAVE_MODEL_SMALL_ATTRIBUTE
- # define __SMALL_ADDR_AREA __attribute__((__model__ (__small__)))
- #else
- # define __SMALL_ADDR_AREA
- #endif
-
- #define DECLARE_PER_CPU(type, name) \
- extern __SMALL_ADDR_AREA __typeof__(type) per_cpu__##name
-
- /* Separate out the type, so (int[3], foo) works. */
- #define DEFINE_PER_CPU(type, name) \
- __attribute__((__section__(".data.percpu"))) \
- __SMALL_ADDR_AREA __typeof__(type) per_cpu__##name
-
- /*
- * Pretty much a literal copy of asm-generic/percpu.h, except that percpu_modcopy() is an
- * external routine, to avoid include-hell.
- */
- #ifdef CONFIG_SMP
-
- extern unsigned long __per_cpu_offset[NR_CPUS];
-
- /* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
- DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
-
- #define per_cpu(var, cpu) (*RELOC_HIDE(&per_cpu__##var, __per_cpu_offset[cpu]))
- #define __get_cpu_var(var) (*RELOC_HIDE(&per_cpu__##var, __ia64_per_cpu_var(local_per_cpu_offset)))
-
- extern void percpu_modcopy(void *pcpudst, const void *src, unsigned long size);
- extern void setup_per_cpu_areas (void);
- extern void *per_cpu_init(void);
-
- #else /* ! SMP */
-
- #define per_cpu(var, cpu) (*((void)(cpu), &per_cpu__##var))
- #define __get_cpu_var(var) per_cpu__##var
- #define per_cpu_init() (__phys_per_cpu_start)
-
- #endif /* SMP */
-
- #define EXPORT_PER_CPU_SYMBOL(var) EXPORT_SYMBOL(per_cpu__##var)
- #define EXPORT_PER_CPU_SYMBOL_GPL(var) EXPORT_SYMBOL_GPL(per_cpu__##var)
-
- /*
- * Be extremely careful when taking the address of this variable! Due to virtual
- * remapping, it is different from the canonical address returned by __get_cpu_var(var)!
- * On the positive side, using __ia64_per_cpu_var() instead of __get_cpu_var() is slightly
- * more efficient.
- */
- #define __ia64_per_cpu_var(var) (per_cpu__##var)
-
- #endif /* !__ASSEMBLY__ */
-
- #endif /* _ASM_IA64_PERCPU_H */
-