225 bool mutex_spin_on_owner(struct mutex *lock, struct task_struct *owner)  in mutex_spin_on_owner()  argument
230 	while (lock->owner == owner) {  in mutex_spin_on_owner()
239 		if (!owner->on_cpu || need_resched()) {  in mutex_spin_on_owner()
256 	struct task_struct *owner;  in mutex_can_spin_on_owner()  local
263 	owner = READ_ONCE(lock->owner);  in mutex_can_spin_on_owner()
264 	if (owner)  in mutex_can_spin_on_owner()
265 		retval = owner->on_cpu;  in mutex_can_spin_on_owner()
323 		struct task_struct *owner;  in mutex_optimistic_spin()  local
345 		owner = READ_ONCE(lock->owner);  in mutex_optimistic_spin()
346 		if (owner && !mutex_spin_on_owner(lock, owner))  in mutex_optimistic_spin()
371 		if (!owner && (need_resched() || rt_task(task)))  in mutex_optimistic_spin()