1 files changed, 6 insertions, 0 deletions

diff --git a/include/litmus/rt_param.h b/include/litmus/rt_param.h
index 89ac0dda7d3d..fac939dbd33a 100644
--- a/include/litmus/rt_param.h
+++ b/include/litmus/rt_param.h
@@ -110,6 +110,12 @@ struct rt_job {
         /* How much service has this job received so far? */
         lt_t    exec_time;
 
+        /* By how much did the prior job miss its deadline by?
+         * Value differs from tardiness in that lateness may
+         * be negative (when job finishes before its deadline).
+         */
+        long long       lateness;
+
         /* Which job is this. This is used to let user space
          * specify which job to wait for, which is important if jobs
          * overrun. If we just call sys_sleep_next_period() then we