tools/perf/arch/x86/util/tsc.h

   1 #ifndef TOOLS_PERF_ARCH_X86_UTIL_TSC_H__
   2 #define TOOLS_PERF_ARCH_X86_UTIL_TSC_H__
   3
   4 #include <linux/types.h>
   5
   6 struct perf_tsc_conversion {
   7         u16 time_shift;
   8         u32 time_mult;
   9         u64 time_zero;
  10 };
  11
  12 struct perf_event_mmap_page;
  13
  14 int perf_read_tsc_conversion(const struct perf_event_mmap_page *pc,
  15                              struct perf_tsc_conversion *tc);
  16
  17 u64 perf_time_to_tsc(u64 ns, struct perf_tsc_conversion *tc);
  18 u64 tsc_to_perf_time(u64 cyc, struct perf_tsc_conversion *tc);
  19
  20 #endif /* TOOLS_PERF_ARCH_X86_UTIL_TSC_H__ */