| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | struct perf_tsc_conversion { |
| 8 | u16 time_shift; |
| 9 | u32 time_mult; |
| 10 | u64 time_zero; |
| 11 | }; |
| 12 | |
| 13 | struct perf_event_mmap_page; |
| 14 | |
| 15 | int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc, |
| 16 | struct perf_tsc_conversion *tc); |
| 17 | |
| 18 | u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc); |
| 19 | u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc); |
| 20 | u64 rdtsc(void); |
| 21 | |
| 22 | #endif // __PERF_TSC_H |