LXR linux/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
   9struct 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
  20struct perf_event_mmap_page;
  21
  22int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
  23                             struct perf_tsc_conversion *tc);
  24
  25u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
  26u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
  27u64 rdtsc(void);
  28
  29size_t perf_event__fprintf_time_conv(union perf_event *event, FILE *fp);
  30
  31#endif // __PERF_TSC_H
  32