diff --git a/include/linux/sched.h b/include/linux/sched.h
index 1cced97..8960f99 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -845,6 +845,7 @@
 extern void set_user_nice(task_t *p, long nice);
 extern int task_prio(const task_t *p);
 extern int task_nice(const task_t *p);
+extern int can_nice(const task_t *p, const int nice);
 extern int task_curr(const task_t *p);
 extern int idle_cpu(int cpu);
 extern int sched_setscheduler(struct task_struct *, int, struct sched_param *);