1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * X86 trace clocks
 4 */
 5#include <asm/trace_clock.h>
 6#include <asm/barrier.h>
 7#include <asm/msr.h>
 8
 9/*
10 * trace_clock_x86_tsc(): A clock that is just the cycle counter.
11 *
12 * Unlike the other clocks, this is not in nanoseconds.
13 */
14u64 notrace trace_clock_x86_tsc(void)
15{
16	return rdtsc_ordered();
17}