diff --git a/pmu/spe.cpp b/pmu/spe.cpp
index eeb77e1431835229733b7300cf1ed8a09f2bb24b..e2a5ece99ab0e96edc9d65ef7f98b8f334ac5e7e 100644
--- a/pmu/spe.cpp
+++ b/pmu/spe.cpp
@@ -405,6 +405,13 @@ static void SetTidByTimestamp(struct ContextSwitchData *dummyData, int *dummyIdx
         start->cpu = cpu;
         start->timestamp = recordTime;
 
+	if (start->tid != -1) {
+	    // In some kernel versions, tid is contained in spe packet,
+            // which has been decoded in arm_spe_decoder.cpp.
+            // Then we do not need dummy events to derive tid for this packet.
+	    continue;    
+	}
+
         if (*dummyIdx >= dummyData[0].num - 1) {
             // Now, all spe records locate after the last switch-in data.
             // We have to use switch-out data to get pid of the last time slice.