--- xnu/xnu-12377.121.6/iokit/Kernel/IOPerfControl.cpp
+++ xnu/xnu-11215.81.4/iokit/Kernel/IOPerfControl.cpp
@@ -147,36 +147,14 @@
 	super::free();
 }
 
-void
-IOPerfControlClient::setDeviceType(IOPCDeviceType newDeviceType)
-{
-	if (newDeviceType >= IOPCDeviceTypeMax) {
-		panic("unknown device type %d", newDeviceType);
-	}
-
-	if (deviceType != IOPCDeviceTypeUnknown) {
-		panic("deviceType already set to %d", deviceType);
-	}
-
-	deviceType = newDeviceType;
-}
-
-
 IOPerfControlClient *
-IOPerfControlClient::copyClientForDeviceType(IOService *driver, uint64_t maxWorkCapacity, IOPCDeviceType deviceType)
+IOPerfControlClient::copyClient(IOService *driver, uint64_t maxWorkCapacity)
 {
 	IOPerfControlClient *client = new IOPerfControlClient;
 	if (!client || !client->init(driver, maxWorkCapacity)) {
 		panic("could not create IOPerfControlClient");
 	}
-	client->setDeviceType(deviceType);
 	return client;
-}
-
-IOPerfControlClient *
-IOPerfControlClient::copyClient(IOService *driver, uint64_t maxWorkCapacity)
-{
-	return copyClientForDeviceType(driver, maxWorkCapacity, IOPCDeviceTypeUnknown);
 }
 
 /* Convert the per driver token into a globally unique token for the performance
@@ -791,30 +769,6 @@
 }
 
 IOReturn
-IOPerfControlClient::querySubmitterRole(IOService *device, task_t clientTask, uint32_t* role_out)
-{
-	IOReturn result = kIOReturnNotFound;
-
-	uint32_t role;
-
-	switch (deviceType) {
-	case IOPCDeviceTypeGPU:
-		role = task_get_gpu_role(clientTask);
-
-		KDBG(IMPORTANCE_CODE(IMP_QUERY_GPU_ROLE, 0), role);
-
-		*role_out = role;
-
-		result = kIOReturnSuccess;
-		break;
-	default:
-		result = kIOReturnNotFound;
-	}
-
-	return result;
-}
-
-IOReturn
 IOPerfControlClient::registerPerformanceController(PerfControllerInterface *pci)
 {
 	IOReturn result = kIOReturnError;