24 lines
448 B
C
24 lines
448 B
C
/* 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 */
|