/* SPDX-License-Identifier: GPL-2.0-only */ | |
#include <cpu/x86/tsc.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; | |
} |