try_to_wake_up
return try_to_wake_up(p, TASK_NORMAL, 0);
return try_to_wake_up(p, state, 0);
return try_to_wake_up(curr->private, mode, wake_flags);
extern int try_to_wake_up(struct task_struct *tsk, unsigned int state, int wake_flags);
try_to_wake_up(curr->task, TASK_NORMAL, wake_flags);