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
   9 struct perf_tsc_conversion {
  10         u16 time_shift;
  11         u32 time_mult;
  12         u64 time_zero;
  13 };
  14 struct perf_event_mmap_page;
  15
  16 int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
  17                              struct perf_tsc_conversion *tc);
  18
  19 u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
  20 u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
  21 u64 rdtsc(void);
  22
  23 struct perf_event_mmap_page;
  24 struct perf_tool;
  25 struct machine;
  26
  27 int perf_event__synth_time_conv(const struct perf_event_mmap_page *pc,
  28                                 struct perf_tool *tool,
  29                                 perf_event__handler_t process,
  30                                 struct machine *machine);
  31
  32 #endif