A core, PCIe devices, and a PCIe switch are provided. A PCIe bridge includes a device tree data that indicates the location of each of the PCIe devices with respect to the core via the PCIe switch and an action list in which a process causing one of the PCIe devices to perform when an event occurs in the one of the PCIe devices. If an event occurs in a specific PCIe device, the PCIe bridge acquires an event occurrence notification; specifies the location of the specific PCIe device from the device tree data on the basis of an event occurrence notification; extracts the process causing the specific PCIe device to perform from the action list; and sends an execution instruction of the extracted process to the specific PCIe device on the basis of the specified location.