Use correct allocation type for timestamp events

Change-Id: I82dc122fd78045d548f95262c2155eab1b1eae39
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@intel.com>

Author: aravindksg

level_zero/core/source/event/event.cpp

@@ -99,7 +99,8 @@ struct EventPoolImp : public EventPool {
 
         NEO::AllocationProperties properties(
             device->getRootDeviceIndex(), count * eventSize,
-            NEO::GraphicsAllocation::AllocationType::BUFFER_HOST_MEMORY);
+            isEventPoolUsedForTimestamp ? NEO::GraphicsAllocation::AllocationType::TIMESTAMP_PACKET_TAG_BUFFER
+                                        : NEO::GraphicsAllocation::AllocationType::BUFFER_HOST_MEMORY);
         properties.alignment = MemoryConstants::cacheLineSize;
         eventPoolAllocation = driver->getMemoryManager()->allocateGraphicsMemoryWithProperties(properties);
 

level_zero/core/test/unit_tests/sources/event/test_event.cpp

@@ -170,5 +170,12 @@ TEST_F(TimestampEventCreate, givenSingleTimestampEventThenAllocationSizeCreatedF
     EXPECT_GE(minTimestampEventAllocation, allocation->getUnderlyingBufferSize());
 }
 
+TEST_F(TimestampEventCreate, givenTimestampEventThenAllocationsIsOfPacketTagBufferType) {
+    auto allocation = &eventPool->getAllocation();
+    ASSERT_NE(nullptr, allocation);
+
+    EXPECT_EQ(NEO::GraphicsAllocation::AllocationType::TIMESTAMP_PACKET_TAG_BUFFER, allocation->getAllocationType());
+}
+
 } // namespace ult
 } // namespace L0