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| /* SPDX-License-Identifier: GPL-2.0 */
| #ifndef __PERF_TSC_H
| #define __PERF_TSC_H
|
| #include <linux/types.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);
|
| #endif // __PERF_TSC_H
|
|
