-#define prepare_arch_switch(rq,next) local_irq_enable()
-#define finish_arch_switch(rq,prev) spin_unlock(&(rq)->lock)
-#define task_running(rq,p) ((rq)->curr == (p))
+#define prepare_arch_switch(next) local_irq_enable()
+#define finish_arch_switch(prev) spin_unlock(&(rq)->lock)