tools/perf/util/tsc.h

   1 #ifndef __PERF_TSC_H
   2 #define __PERF_TSC_H
   3
   4 #include <linux/types.h>
   5
   6 #include "event.h"
   7
   8 struct perf_tsc_conversion {
   9         u16 time_shift;
  10         u32 time_mult;
  11         u64 time_zero;
  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 struct perf_event_mmap_page;
  23 struct perf_tool;
  24 struct machine;
  25
  26 int perf_event__synth_time_conv(const struct perf_event_mmap_page *pc,
  27                                 struct perf_tool *tool,
  28                                 perf_event__handler_t process,
  29                                 struct machine *machine);
  30
  31 #endif