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abc22418db
Enable x86 to use only the common headers in the implementation of the vDSO library. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20200320145351.32292-24-vincenzo.frascino@arm.com
23 lines
448 B
C
23 lines
448 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (C) 2020 ARM Ltd.
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*/
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#ifndef __ASM_VDSO_PROCESSOR_H
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#define __ASM_VDSO_PROCESSOR_H
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#ifndef __ASSEMBLY__
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/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
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static __always_inline void rep_nop(void)
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{
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asm volatile("rep; nop" ::: "memory");
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}
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static __always_inline void cpu_relax(void)
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{
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rep_nop();
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}
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#endif /* __ASSEMBLY__ */
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#endif /* __ASM_VDSO_PROCESSOR_H */
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