Fix a Bug where the last task before mode switch would be run again if its...

Fix a Bug where the last task before mode switch would be run again if its performance counter could not be read before switch, accidentally doubling its instruction count when measured

kernel/sched/pb.c

@@ -147,7 +147,7 @@ static struct task_struct * pick_next_task_pb(struct rq *rq,
 		}
 	}
 
-	if (current_mode == PB_EXEC_MODE && !pb->is_preempted) {
+	if ((current_mode == PB_EXEC_MODE && !pb->is_preempted) || (pb->is_preempted && !pb->is_in_critical)) {
 		unsigned int c_entry_curr;
 		u64 perf_counter;
 		u64 counter_diff;