1 files changed, 2 insertions, 1 deletions

diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index c7f0c79b2cb5..60b6329ab222 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -49,6 +49,7 @@
 #include <linux/timer.h>
 
 #include <litmus/debug_trace.h>
+#include <litmus/litmus.h>
 
 #include <asm/uaccess.h>
 
@@ -1701,7 +1702,7 @@ long hrtimer_nanosleep(struct timespec *rqtp, struct timespec __user *rmtp,
         unsigned long slack;
 
         slack = current->timer_slack_ns;
-        if (rt_task(current))
+        if (rt_task(current) || is_realtime(current))
                 slack = 0;
 
         hrtimer_init_on_stack(&t.timer, clockid, mode);