GNU Linux-libre 4.19.211-gnu1
[releases.git] / tools / perf / util / 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
9 struct perf_tsc_conversion {
10         u16 time_shift;
11         u32 time_mult;
12         u64 time_zero;
13 };
14 struct perf_event_mmap_page;
15
16 int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
17                              struct perf_tsc_conversion *tc);
18
19 u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
20 u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
21 u64 rdtsc(void);
22
23 struct perf_event_mmap_page;
24 struct perf_tool;
25 struct machine;
26
27 int perf_event__synth_time_conv(const struct perf_event_mmap_page *pc,
28                                 struct perf_tool *tool,
29                                 perf_event__handler_t process,
30                                 struct machine *machine);
31
32 #endif