1 files changed, 59 insertions, 0 deletions
diff --git a/include/linux/sched/rt.h b/include/linux/sched/rt.h
new file mode 100644
index 000000000..994c25640
--- /dev/null
+++ b/include/linux/sched/rt.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_SCHED_RT_H
+#define _LINUX_SCHED_RT_H
+
+#include <linux/sched.h>
+
+struct task_struct;
+
+static inline int rt_prio(int prio)
+{
+	if (unlikely(prio < MAX_RT_PRIO))
+		return 1;
+	return 0;
+}
+
+static inline int rt_task(struct task_struct *p)
+{
+	return rt_prio(p->prio);
+}
+
+static inline bool task_is_realtime(struct task_struct *tsk)
+{
+	int policy = tsk->policy;
+
+	if (policy == SCHED_FIFO || policy == SCHED_RR)
+		return true;
+	if (policy == SCHED_DEADLINE)
+		return true;
+	return false;
+}
+
+#ifdef CONFIG_RT_MUTEXES
+/*
+ * Must hold either p->pi_lock or task_rq(p)->lock.
+ */
+static inline struct task_struct *rt_mutex_get_top_task(struct task_struct *p)
+{
+	return p->pi_top_task;
+}
+extern void rt_mutex_setprio(struct task_struct *p, struct task_struct *pi_task);
+extern void rt_mutex_adjust_pi(struct task_struct *p);
+#else
+static inline struct task_struct *rt_mutex_get_top_task(struct task_struct *task)
+{
+	return NULL;
+}
+# define rt_mutex_adjust_pi(p)		do { } while (0)
+#endif
+
+extern void normalize_rt_tasks(void);
+
+
+/*
+ * default timeslice is 100 msecs (used only for SCHED_RR tasks).
+ * Timeslices get refilled after they expire.
+ */
+#define RR_TIMESLICE		(100 * HZ / 1000)
+
+#endif /* _LINUX_SCHED_RT_H */