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。

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An action that sends a message or signal to another activity or to a concurrent thread in the same activity.

一种操作，可以将消息或信号发送给另一个活动，或同一活动中的并发线程。

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