sched: Rename rt_mutex_setprio to task_setprio

In RT we have multiple non-mutex users of this function. Rename it.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

include/linux/sched.h

@@ -1842,9 +1842,14 @@ int sched_rt_handler(struct ctl_table *table, int write,
 
 extern unsigned int sysctl_sched_compat_yield;
 
+extern void task_setprio(struct task_struct *p, int 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);
+static inline void rt_mutex_setprio(struct task_struct *p, int prio)
+{
+	task_setprio(p, prio);
+}
 extern void rt_mutex_adjust_pi(struct task_struct *p);
 #else
 static inline int rt_mutex_getprio(struct task_struct *p)

kernel/sched.c

@@ -5869,19 +5869,19 @@ long __sched sleep_on_timeout(wait_queue_head_t *q, long timeout)
 }
 EXPORT_SYMBOL(sleep_on_timeout);
 
-#ifdef CONFIG_RT_MUTEXES
-
 /*
- * rt_mutex_setprio - set the current priority of a task
+ * task_setprio - set the current priority of a task
  * @p: task
  * @prio: prio value (kernel-internal form)
  *
  * This function changes the 'effective' priority of a task. It does
  * not touch ->normal_prio like __setscheduler().
  *
- * Used by the rt_mutex code to implement priority inheritance logic.
+ * Used by the rt_mutex code to implement priority inheritance logic
+ * and by rcupreempt-boost to boost priorities of tasks sleeping
+ * with rcu locks.
  */
-void rt_mutex_setprio(struct task_struct *p, int prio)
+void task_setprio(struct task_struct *p, int prio)
 {
 	unsigned long flags;
 	int oldprio, on_rq, running;
@@ -5918,8 +5918,6 @@ void rt_mutex_setprio(struct task_struct *p, int prio)
 	task_rq_unlock(rq, &flags);
 }
 
-#endif
-
 void set_user_nice(struct task_struct *p, long nice)
 {
 	int old_prio, delta, on_rq;