arch/arm/include/asm/vdso/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__

#if __LINUX_ARM_ARCH__ == 6 || defined(CONFIG_ARM_ERRATA_754327)
#define cpu_relax()						\
	do {							\
		smp_mb();					\
		__asm__ __volatile__("nop; nop; nop; nop; nop; nop; nop; nop; nop; nop;");	\
	} while (0)
#else
#define cpu_relax()			barrier()
#endif

#endif /* __ASSEMBLY__ */

#endif /* __ASM_VDSO_PROCESSOR_H */