add mlfqs condition checking in synchronisation primitives

src/threads/thread.c

@@ -473,6 +473,12 @@ void
 thread_recalculate_priority (void)
 {
   struct thread *t = thread_current ();
+
+  if (thread_mlfqs)
+  {
+    t->priority = calculate_bsd_priority (t->recent_cpu, t->nice);
+    return;
+  }
   
   enum intr_level old_level = intr_disable ();
   t->priority = t->base_priority;