1 files changed, 4 insertions, 1 deletions

diff --git a/include/litmus/litmus.h b/include/litmus/litmus.h
index 0b071fd359f9..a2e564b885a7 100644
--- a/include/litmus/litmus.h
+++ b/include/litmus/litmus.h
@@ -26,6 +26,7 @@ static inline int in_list(struct list_head* list)
                 );
 }
 
+
 struct task_struct* __waitqueue_remove_first(wait_queue_head_t *wq);
 
 #define NO_CPU                  0xffffffff
@@ -117,7 +118,9 @@ static inline lt_t litmus_clock(void)
 #define earlier_release(a, b)  (lt_before(\
         (a)->rt_param.job_params.release,\
         (b)->rt_param.job_params.release))
-
+#define shorter_period(a, b)   (lt_before(\
+    (a)->rt_param.task_params.period,\
+    (b)->rt_param.task_params.period))
 void preempt_if_preemptable(struct task_struct* t, int on_cpu);
 
 #ifdef CONFIG_LITMUS_LOCKING