processor.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2020 ARM Ltd.
 4 */
 5#ifndef __ASM_VDSO_PROCESSOR_H
 6#define __ASM_VDSO_PROCESSOR_H
 7
 8#ifndef __ASSEMBLER__
 9
10/* PAUSE is a good thing to insert into busy-wait loops. */
11static __always_inline void native_pause(void)
12{
13	asm volatile("pause" ::: "memory");
14}
15
16static __always_inline void cpu_relax(void)
17{
18	native_pause();
19}
20
21struct getcpu_cache;
22
23notrace long __vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused);
24
25#endif /* __ASSEMBLER__ */
26
27#endif /* __ASM_VDSO_PROCESSOR_H */