PsGetProcessId

VOID *__stdcall PsGetProcessId(_EPROCESS *Process){
  return Process->UniqueProcessId;
}

Referenced by:

EtwQueryPerformanceTraceInformation
EtwTraceSystemTimeChange
EtwTraceWorkingSetInSwapStoreFail
EtwTraceWorkingSetSwap
EtwpEnableGuid
EtwpNotifyGuid
EtwpObjectHandleRundown
MiForceCrashForInvalidAccess
MiLogHotPatchManagement
MiLogHotPatchOperation
MiLogHotPatchOperationStatus
MiLogHotPatchPagesLocked
MiLogHotPatchRundown
PopCreatePowerRequestObject
PopEtAggregateKeyCopyFromProcess
PsOpenProcess
TtmpCloseQueueHandle
TtmpCloseTerminalHandle
TtmpOpenQueueHandle
TtmpOpenTerminalHandle
WbDispatchOperation
WheaTerminateProcess