diff --git a/include/linux/sched/debug.h b/include/linux/sched/debug.h
index 55bc0cd..853bbef 100644
--- a/include/linux/sched/debug.h
+++ b/include/linux/sched/debug.h
@@ -3,4 +3,50 @@
 
 #include <linux/sched.h>
 
+/*
+ * Various scheduler/task debugging interfaces:
+ */
+
+struct task_struct;
+
+extern void dump_cpu_task(int cpu);
+
+/*
+ * Only dump TASK_* tasks. (0 for all tasks)
+ */
+extern void show_state_filter(unsigned long state_filter);
+
+static inline void show_state(void)
+{
+	show_state_filter(0);
+}
+
+struct pt_regs;
+
+extern void show_regs(struct pt_regs *);
+
+/*
+ * TASK is a pointer to the task whose backtrace we want to see (or NULL for current
+ * task), SP is the stack pointer of the first frame that should be shown in the back
+ * trace (or NULL if the entire call-chain of the task should be shown).
+ */
+extern void show_stack(struct task_struct *task, unsigned long *sp);
+
+extern void sched_show_task(struct task_struct *p);
+
+#ifdef CONFIG_SCHED_DEBUG
+struct seq_file;
+extern void proc_sched_show_task(struct task_struct *p, struct seq_file *m);
+extern void proc_sched_set_task(struct task_struct *p);
+#endif
+
+/* Attach to any functions which should be ignored in wchan output. */
+#define __sched		__attribute__((__section__(".sched.text")))
+
+/* Linker adds these: start and end of __sched functions */
+extern char __sched_text_start[], __sched_text_end[];
+
+/* Is this address in the __sched functions? */
+extern int in_sched_functions(unsigned long addr);
+
 #endif /* _LINUX_SCHED_DEBUG_H */