1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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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 | u64 time_cycles; |
14 | u64 time_mask; |
15 | |
16 | bool cap_user_time_zero; |
17 | bool cap_user_time_short; |
18 | }; |
19 | |
20 | struct perf_event_mmap_page; |
21 | |
22 | int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, |
23 | struct perf_tsc_conversion *tc); |
24 | |
25 | u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc); |
26 | u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc); |
27 | u64 rdtsc(void); |
28 | double arch_get_tsc_freq(void); |
29 | |
30 | size_t perf_event__fprintf_time_conv(union perf_event *event, FILE *fp); |
31 | |
32 | #endif // __PERF_TSC_H |
33 |