中断从硬件到内核的路由

硬件->中断控制器->处理器->处理器中断内核->do_IRQ()->该线上是否有中断处理程序

  • —是—>handle_IRQ_event()->在该线上运行所有中断处理程序->
  • —否—>ret_from_intr()–>返回内核运行中断的代码

interrupt route

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