Staging
v0.8.1
https://github.com/torvalds/linux
Raw File
Tip revision: 856deb866d16e29bd65952e0289066f6078af773 authored by Linus Torvalds on 13 September 2020, 23:06:00 UTC
Linux 5.9-rc5
Tip revision: 856deb8
processor.h
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2020 ARM Ltd.
 */
#ifndef __ASM_VDSO_PROCESSOR_H
#define __ASM_VDSO_PROCESSOR_H

#ifndef __ASSEMBLY__

/* REP NOP (PAUSE) is a good thing to insert into busy-wait loops. */
static __always_inline void rep_nop(void)
{
	asm volatile("rep; nop" ::: "memory");
}

static __always_inline void cpu_relax(void)
{
	rep_nop();
}

#endif /* __ASSEMBLY__ */

#endif /* __ASM_VDSO_PROCESSOR_H */
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