54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_IA64_PERCPU_H
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#define _ASM_IA64_PERCPU_H
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/*
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* Copyright (C) 2002-2003 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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*/
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#ifdef __ASSEMBLY__
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# define THIS_CPU(var) (var) /* use this to mark accesses to per-CPU variables... */
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#else /* !__ASSEMBLY__ */
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#include <linux/threads.h>
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#ifdef CONFIG_SMP
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#ifdef HAVE_MODEL_SMALL_ATTRIBUTE
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# define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__)))
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#endif
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#define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset)
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extern void *per_cpu_init(void);
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#else /* ! SMP */
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#define per_cpu_init() (__phys_per_cpu_start)
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#endif /* SMP */
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#define PER_CPU_BASE_SECTION ".data..percpu"
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/*
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* Be extremely careful when taking the address of this variable! Due to virtual
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* remapping, it is different from the canonical address returned by this_cpu_ptr(&var)!
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* On the positive side, using __ia64_per_cpu_var() instead of this_cpu_ptr() is slightly
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* more efficient.
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*/
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#define __ia64_per_cpu_var(var) (*({ \
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__verify_pcpu_ptr(&(var)); \
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((typeof(var) __kernel __force *)&(var)); \
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}))
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#include <asm-generic/percpu.h>
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/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
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DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_IA64_PERCPU_H */
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