KiGetClockIntervalOneShot

NTSTATUS __stdcall KiGetClockIntervalOneShot(UINT64 a1, INT64 a2){
  NTSTATUS v2; 

  v2 = KeMinimumIncrement;
  if( a1 > a2 + (unsigned __int64)(unsigned int)KeMinimumIncrement )
    return(KeMinimumIncrement - (int)a2 + (int)a1 - 1) / (unsigned int)KeMinimumIncrement * KeMinimumIncrement;
  return v2;
}

Referenced by:

KiCheckForTimerExpiration
KiRestoreClockTickRate
KiSetClockIntervalToMinimumRequested