arch/x86/include/asm/timex.h

Source file repositories/reference/linux-study-clean/arch/x86/include/asm/timex.h

File Facts

System
Linux kernel
Corpus path
arch/x86/include/asm/timex.h
Extension
.h
Size
510 bytes
Lines
22
Domain
Architecture Layer
Bucket
arch/x86
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _ASM_X86_TIMEX_H
#define _ASM_X86_TIMEX_H

#include <asm/processor.h>
#include <asm/tsc.h>

static inline unsigned long random_get_entropy(void)
{
	if (!cpu_feature_enabled(X86_FEATURE_TSC))
		return random_get_entropy_fallback();
	return rdtsc();
}
#define random_get_entropy random_get_entropy

/* Assume we use the PIT time source for the clock tick */
#define CLOCK_TICK_RATE		PIT_TICK_RATE

#define ARCH_HAS_READ_CURRENT_TIMER

#endif /* _ASM_X86_TIMEX_H */

Annotation

Implementation Notes