percpu.h

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#ifndef _ASM_IA64_PERCPU_H
#define _ASM_IA64_PERCPU_H

/*
 * Copyright (C) 2002-2003 Hewlett-Packard Co
 *  David Mosberger-Tang <[email protected]>
 */

#define PERCPU_ENOUGH_ROOM PERCPU_PAGE_SIZE

#ifdef __ASSEMBLY__
# define THIS_CPU(var)  (var)  /* use this to mark accesses to per-CPU variables... */
#else /* !__ASSEMBLY__ */


#include <linux/threads.h>

#ifdef CONFIG_SMP

#ifdef HAVE_MODEL_SMALL_ATTRIBUTE
# define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__)))
#endif

#define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset)

extern void *per_cpu_init(void);

#else /* ! SMP */

#define per_cpu_init()              (__phys_per_cpu_start)

#endif  /* SMP */

#define PER_CPU_BASE_SECTION ".data..percpu"

/*
 * 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) (*({                    \
    __verify_pcpu_ptr(&(var));                  \
    ((typeof(var) __kernel __force *)&(var));           \
}))

#include <asm-generic/percpu.h>

/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);

#endif /* !__ASSEMBLY__ */

#endif /* _ASM_IA64_PERCPU_H */