内核打印信息到到当前终端

static void printk_string(char *str)
{
    struct tty_struct *my_tty;
    my_tty = current->signal->tty;
    if(my_tty != NULL)
    {
        my_tty->ops->write(my_tty,str,strlen(str));
        //my_tty->ops->write (my_tty,"\015\013",2);
    }
}

注：调用系统printk函数，只是打印信息到调试终端。