Cregit: Linux 6.1: tsc.h

Contributors: 5
Author	Tokens	Token Proportion	Commits	Commit Proportion
Adrian Hunter	73	66.97%	3	37.50%
Leo Yan	28	25.69%	2	25.00%
Kan Liang	6	5.50%	1	12.50%
Arnaldo Carvalho de Melo	1	0.92%	1	12.50%
Greg Kroah-Hartman	1	0.92%	1	12.50%
Total	109		8

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_TSC_H
#define __PERF_TSC_H

#include <linux/types.h>

#include "event.h"

struct perf_tsc_conversion {
	u16 time_shift;
	u32 time_mult;
	u64 time_zero;
	u64 time_cycles;
	u64 time_mask;

	bool cap_user_time_zero;
	bool cap_user_time_short;
};

struct perf_event_mmap_page;

int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
			     struct perf_tsc_conversion *tc);

u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
u64 rdtsc(void);
double arch_get_tsc_freq(void);

size_t perf_event__fprintf_time_conv(union perf_event *event, FILE *fp);

#endif // __PERF_TSC_H