blob: 0a4c9c4ec9b5150ea5fbededbc2604716d521f4a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
/* SPDX-License-Identifier: GPL-2.0-only */
#include <cpu/x86/tsc.h>
#include <stdint.h>
#include <timestamp.h>
uint64_t timestamp_get(void)
{
return rdtscll();
}
int timestamp_tick_freq_mhz(void)
{
/* Chipsets that have a constant TSC provide this value correctly. */
if (tsc_constant_rate())
return tsc_freq_mhz();
/* Filling tick_freq_mhz = 0 in timestamps-table will trigger
* userspace utility to try deduce it from the running system.
*/
return 0;
}
|
