xref: /kernel/linux/linux-5.10/tools/perf/util/tsc.h
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18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */
28c2ecf20Sopenharmony_ci#ifndef __PERF_TSC_H
38c2ecf20Sopenharmony_ci#define __PERF_TSC_H
48c2ecf20Sopenharmony_ci
58c2ecf20Sopenharmony_ci#include <linux/types.h>
68c2ecf20Sopenharmony_ci
78c2ecf20Sopenharmony_cistruct perf_tsc_conversion {
88c2ecf20Sopenharmony_ci	u16 time_shift;
98c2ecf20Sopenharmony_ci	u32 time_mult;
108c2ecf20Sopenharmony_ci	u64 time_zero;
118c2ecf20Sopenharmony_ci	u64 time_cycles;
128c2ecf20Sopenharmony_ci	u64 time_mask;
138c2ecf20Sopenharmony_ci
148c2ecf20Sopenharmony_ci	bool cap_user_time_zero;
158c2ecf20Sopenharmony_ci	bool cap_user_time_short;
168c2ecf20Sopenharmony_ci};
178c2ecf20Sopenharmony_ci
188c2ecf20Sopenharmony_cistruct perf_event_mmap_page;
198c2ecf20Sopenharmony_ci
208c2ecf20Sopenharmony_ciint perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
218c2ecf20Sopenharmony_ci			     struct perf_tsc_conversion *tc);
228c2ecf20Sopenharmony_ci
238c2ecf20Sopenharmony_ciu64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
248c2ecf20Sopenharmony_ciu64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
258c2ecf20Sopenharmony_ciu64 rdtsc(void);
268c2ecf20Sopenharmony_ci
278c2ecf20Sopenharmony_ci#endif // __PERF_TSC_H
28

Indexes created Thu Nov 07 10:32:03 CST 2024