NTKERNELAPI
LONG64
FASTCALL
WmiGetClock(
  IN  WMI_CLOCK_TYPE ClockType,
  IN  PVOID Context
  );

Routine Description:

    This is called anyone internal to use a particular clock for
    sequencing events.

Arguments:

    ClockType       Should use WMICT_DEFAULT most of the time.
                    Other clock types are for perf group.
    Context         Only used for process/thread times

Return Value:

    The clock value