You have to set the appropriate fields and then pass the same to the special ioctl that would in turn either raise the interrupts or signal the kernel thread to raise the interrupts.
需要设置适当的域，然后将其传递给这个特殊的ioctl，它会触发中断，或者向内核线程发送信号来触发中断。
Although the kernel may accept a new interrupt signal while handling a previous one, some critical regions exist inside the kernel code where interrupts must be disabled.
尽管内核可以在执行一个中断时，接收一个新的中断信号，内核代码中存在一些临界区域，这里中断必须关闭。
According the characteristic of the steering-engines control signal, use one pin of S3C2440 to control one steering-engine, use interrupts to specific the time.
根据舵机的控制信号特性，设计使用S3C2440的一个通用引脚控制一个舵机，应用中断来对时间进行描述。
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