1 files changed, 24 insertions, 0 deletions

diff --git a/include/linux/sched/deadline.h b/include/linux/sched/deadline.h
new file mode 100644
index 000000000000..9d303b8847df
--- /dev/null
+++ b/include/linux/sched/deadline.h
@@ -0,0 +1,24 @@
+#ifndef _SCHED_DEADLINE_H
+#define _SCHED_DEADLINE_H
+
+/*
+ * SCHED_DEADLINE tasks has negative priorities, reflecting
+ * the fact that any of them has higher prio than RT and
+ * NORMAL/BATCH tasks.
+ */
+
+#define MAX_DL_PRIO             0
+
+static inline int dl_prio(int prio)
+{
+        if (unlikely(prio < MAX_DL_PRIO))
+                return 1;
+        return 0;
+}
+
+static inline int dl_task(struct task_struct *p)
+{
+        return dl_prio(p->prio);
+}
+
+#endif /* _SCHED_DEADLINE_H */