1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __PERF_TSC_H
 3#define __PERF_TSC_H
 4
 5#include <linux/types.h>
 6
 
 
 7struct perf_tsc_conversion {
 8	u16 time_shift;
 9	u32 time_mult;
10	u64 time_zero;
 
 
 
 
 
11};
12
13struct perf_event_mmap_page;
14
15int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
16			     struct perf_tsc_conversion *tc);
17
18u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
19u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
20u64 rdtsc(void);
 
 
 
21
22#endif // __PERF_TSC_H

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __PERF_TSC_H
 3#define __PERF_TSC_H
 4
 5#include <linux/types.h>
 6
 7#include "event.h"
 8
 9struct perf_tsc_conversion {
10	u16 time_shift;
11	u32 time_mult;
12	u64 time_zero;
13	u64 time_cycles;
14	u64 time_mask;
15
16	bool cap_user_time_zero;
17	bool cap_user_time_short;
18};
19
20struct perf_event_mmap_page;
21
22int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
23			     struct perf_tsc_conversion *tc);
24
25u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
26u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
27u64 rdtsc(void);
28u64 arch_get_tsc_freq(void);
29
30size_t perf_event__fprintf_time_conv(union perf_event *event, FILE *fp);
31
32#endif // __PERF_TSC_H