Index: sys/compat/linuxkpi/common/include/linux/sched.h
===================================================================
--- sys/compat/linuxkpi/common/include/linux/sched.h
+++ sys/compat/linuxkpi/common/include/linux/sched.h
@@ -34,6 +34,7 @@
 #include <sys/param.h>
 #include <sys/systm.h>
 #include <sys/proc.h>
+#include <sys/rtprio.h>
 #include <sys/sched.h>
 #include <sys/sleepqueue.h>
 #include <sys/time.h>
@@ -41,6 +42,7 @@
 #include <linux/bitmap.h>
 #include <linux/compat.h>
 #include <linux/completion.h>
+#include <linux/hrtimer.h>
 #include <linux/mm_types.h>
 #include <linux/pid.h>
 #include <linux/slab.h>
@@ -61,6 +63,8 @@
 
 #define	TASK_COMM_LEN		(MAXCOMLEN + 1)
 
+struct seq_file;
+
 struct work_struct;
 struct task_struct {
 	struct thread *task_thread;
@@ -214,4 +218,24 @@
 	return (task->comm);
 }
 
+static inline void
+sched_set_fifo(struct task_struct *t)
+{
+	struct rtprio rtp;
+
+	rtp.prio = RTP_PRIO_MAX / 2;
+	rtp.type = RTP_PRIO_FIFO;
+	rtp_to_pri(&rtp, t->task_thread);
+}
+
+static inline void
+sched_set_fifo_low(struct task_struct *t)
+{
+	struct rtprio rtp;
+
+	rtp.prio = RTP_PRIO_MAX;	/* lowest priority */
+	rtp.type = RTP_PRIO_FIFO;
+	rtp_to_pri(&rtp, t->task_thread);
+}
+
 #endif	/* _LINUXKPI_LINUX_SCHED_H_ */