Softirqs were used for time-critical processing (software interrupts) in the kernel thread context.

软中断用于在内核线程上下文中处理时间要求严格的处理过程（软件中断）。

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Signals are software interrupts that send information about an occurrence of an asynchronous event to an executing program, or process.

信号就是软件中断，可以向正在执行的程序(进程)发送有关异步事件发生的信息。

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Exports statistics about the software interrupts used by the networking code. See Chapter 12.

用于暴露一些用于网络代码的软中断。参见第12章。

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