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 */
14 u64 notrace trace_clock_x86_tsc(void)
15 {
16 return rdtsc_ordered();
17 }
18
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