tools/testing/selftests/kvm/include/arm64/delay.h

Source file repositories/reference/linux-study-clean/tools/testing/selftests/kvm/include/arm64/delay.h

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/kvm/include/arm64/delay.h
Extension
.h
Size
471 bytes
Lines
26
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef SELFTEST_KVM_ARM_DELAY_H
#define SELFTEST_KVM_ARM_DELAY_H

#include "arch_timer.h"

static inline void __delay(u64 cycles)
{
	enum arch_timer timer = VIRTUAL;
	u64 start = timer_get_cntct(timer);

	while ((timer_get_cntct(timer) - start) < cycles)
		cpu_relax();
}

static inline void udelay(unsigned long usec)
{
	__delay(usec_to_cycles(usec));
}

#endif /* SELFTEST_KVM_ARM_DELAY_H */

Annotation

Implementation Notes