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-rw-r--r--kernel/include/linux/sched/rt.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/kernel/include/linux/sched/rt.h b/kernel/include/linux/sched/rt.h
new file mode 100644
index 000000000..a30b172df
--- /dev/null
+++ b/kernel/include/linux/sched/rt.h
@@ -0,0 +1,60 @@
+#ifndef _SCHED_RT_H
+#define _SCHED_RT_H
+
+#include <linux/sched/prio.h>
+
+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);
+}
+
+#ifdef CONFIG_RT_MUTEXES
+extern int rt_mutex_getprio(struct task_struct *p);
+extern void rt_mutex_setprio(struct task_struct *p, int prio);
+extern int rt_mutex_get_effective_prio(struct task_struct *task, int newprio);
+extern struct task_struct *rt_mutex_get_top_task(struct task_struct *task);
+extern void rt_mutex_adjust_pi(struct task_struct *p);
+static inline bool tsk_is_pi_blocked(struct task_struct *tsk)
+{
+ return tsk->pi_blocked_on != NULL;
+}
+#else
+static inline int rt_mutex_getprio(struct task_struct *p)
+{
+ return p->normal_prio;
+}
+
+static inline int rt_mutex_get_effective_prio(struct task_struct *task,
+ int newprio)
+{
+ return newprio;
+}
+
+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)
+static inline bool tsk_is_pi_blocked(struct task_struct *tsk)
+{
+ return false;
+}
+#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 /* _SCHED_RT_H */