scheduler: Inherit penalty and core from creator thread

src/system/kernel/scheduler/low_latency.cpp

@@ -35,7 +35,8 @@ static bool
 has_cache_expired(const ThreadData* threadData)
 {
 	SCHEDULER_ENTER_FUNCTION();
-
+	if (threadData->WentSleepActive() == 0)
+		return false;
 	CoreEntry* core = threadData->Core();
 	bigtime_t activeTime = core->GetActiveTime();
 	return activeTime - threadData->WentSleepActive() > kCacheExpire;

src/system/kernel/scheduler/power_saving.cpp

@@ -41,6 +41,8 @@ static bool
 has_cache_expired(const ThreadData* threadData)
 {
 	SCHEDULER_ENTER_FUNCTION();
+	if (threadData->WentSleep() == 0)
+		return false;
 	return system_time() - threadData->WentSleep() > kCacheExpire;
 }
 

src/system/kernel/scheduler/scheduler_thread.cpp

@@ -16,14 +16,12 @@ ThreadData::ThreadData(Thread* thread)
 	:
 	fThread(thread)
 {
-	Init();
 }
 
 
 void
 ThreadData::Init()
 {
-	fPriorityPenalty = 0;
 	fAdditionalPenalty = 0;
 	fEffectivePriority = -1;
 
@@ -40,7 +38,25 @@ ThreadData::Init()
 
 	fEnqueued = false;
 
-	fCore = NULL;
+	Thread* currentThread = thread_get_current_thread();
+	ASSERT(currentThread != NULL);
+	if (!thread_is_idle_thread(currentThread)) {
+		ThreadData* currentThreadData = currentThread->scheduler_data;
+		int32 penalty = currentThreadData->fPriorityPenalty;
+
+		int32 minimalPriority = _GetMinimalPriority();
+		if (fThread->priority - penalty >= minimalPriority)
+			fPriorityPenalty = penalty;
+		else
+			fPriorityPenalty = fThread->priority - minimalPriority;
+
+		fCore = currentThreadData->fCore;
+	} else {
+		fPriorityPenalty = 0;
+		fAdditionalPenalty = 0;
+
+		fCore = NULL;
+	}
 }
 
 

src/system/kernel/scheduler/scheduler_thread.h

@@ -195,7 +195,7 @@ ThreadData::ShouldCancelPenalty() const
 {
 	SCHEDULER_ENTER_FUNCTION();
 
-	if (fCore == NULL)
+	if (fCore == NULL || fWentSleep == 0)
 		return false;
 
 	return fCore->StarvationCounter() != fWentSleepCount