PoGetFrequencyBucket

UINT64 __stdcall PoGetFrequencyBucket(_KPRCB *Prcb){
  unsigned int CurrentFrequency; 

  CurrentFrequency = PpmPerfGetCurrentFrequency(Prcb);
  if( CurrentFrequency >= 0x4B )
    return 3;
  else
    return CurrentFrequency / 0x19;
}

Referenced by:

KiAccumulateProcessorCycleStats
KiEndDebugAccumulation