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1#ifndef _ASM_IA64_PERCPU_H
2#define _ASM_IA64_PERCPU_H
3
4/*
5 * Copyright (C) 2002-2003 Hewlett-Packard Co
6 * David Mosberger-Tang <davidm@hpl.hp.com>
7 */
8
9#ifdef __ASSEMBLY__
10# define THIS_CPU(var) (var) /* use this to mark accesses to per-CPU variables... */
11#else /* !__ASSEMBLY__ */
12
13
14#include <linux/threads.h>
15
16#ifdef CONFIG_SMP
17
18#ifdef HAVE_MODEL_SMALL_ATTRIBUTE
19# define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__)))
20#endif
21
22#define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset)
23
24extern void *per_cpu_init(void);
25
26#else /* ! SMP */
27
28#define per_cpu_init() (__phys_per_cpu_start)
29
30#endif /* SMP */
31
32#define PER_CPU_BASE_SECTION ".data..percpu"
33
34/*
35 * Be extremely careful when taking the address of this variable! Due to virtual
36 * remapping, it is different from the canonical address returned by this_cpu_ptr(&var)!
37 * On the positive side, using __ia64_per_cpu_var() instead of this_cpu_ptr() is slightly
38 * more efficient.
39 */
40#define __ia64_per_cpu_var(var) (*({ \
41 __verify_pcpu_ptr(&(var)); \
42 ((typeof(var) __kernel __force *)&(var)); \
43}))
44
45#include <asm-generic/percpu.h>
46
47/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
48DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
49
50#endif /* !__ASSEMBLY__ */
51
52#endif /* _ASM_IA64_PERCPU_H */