KiPrcbInGroupAffinity

UINT64 __stdcall KiPrcbInGroupAffinity(_KPRCB *Prcb, _GROUP_AFFINITY *GroupAffinity){
  return Prcb->Group == GroupAffinity->Group && (Prcb->GroupSetMember & GroupAffinity->Mask) != 0;
}

Referenced by:

KeSetIdealProcessorThreadEx
KiComputeThreadAffinity
KiDeferGroupSchedulingPreemption
KiDeferredReadySingleThread
KiGroupSchedulingMoveThread
KiQueueReadyThread
KiRescheduleThreadAfterAffinityChange
KiSearchForNewThreadOnProcessor
KiSetAffinityThread
KiSetSystemAffinityThread