https://github.com/torvalds/linux
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Tip revision: bb176f67090ca54869fc1262c913aa69d2ede070 authored by Linus Torvalds on 23 October 2017, 10:49:47 UTC
Linux 4.14-rc6
Tip revision: bb176f6
trace_clock.c
/*
 * X86 trace clocks
 */
#include <asm/trace_clock.h>
#include <asm/barrier.h>
#include <asm/msr.h>

/*
 * trace_clock_x86_tsc(): A clock that is just the cycle counter.
 *
 * Unlike the other clocks, this is not in nanoseconds.
 */
u64 notrace trace_clock_x86_tsc(void)
{
	return rdtsc_ordered();
}
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