Display the IRQ of the connected device
The /proc/interrupts file can display IRQ (InterruptReQuest: Interrupt Request) information.
There are 16 types of IRQ, ranging from 0 to 15, and the /proc/interrupts file contains information on which ones are used.
| [root@Lion ~]# cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 33 0 0 0 IR-IO-APIC-edge timer 1: 5 0 0 0 IR-IO-APIC-edge i8042 8: 1 0 0 0 IR-IO-APIC-edge rtc0 9: 0 0 0 0 IR-IO-APIC-fasteoi acpi 12: 6 0 0 0 IR-IO-APIC-edge i8042 16: 0 0 0 0 IR-IO-APIC-fasteoi uhci_hcd:usb3, hpilo 20: 2126 0 0 0 IR-IO-APIC-fasteoi ehci_hcd:usb2 21: 51 0 0 0 IR-IO-APIC-fasteoi ehci_hcd:usb1 24: 0 0 0 0 DMAR_MSI-edge dmar0 28: 34531812 21816412 16959517 9867378 IR-PCI-MSI-edge 0000:00:1f.2 29: 14206993 8553201 919900 6829216 IR-PCI-MSI-edge eth0-tx-0 30: 525528 1097358 1235266 1437804 IR-PCI-MSI-edge eth0-rx-1 31: 274530 642476 851329 1622038 IR-PCI-MSI-edge eth0-rx-2 32: 212649 872001 1100812 1468434 IR-PCI-MSI-edge eth0-rx-3 33: 11860034 7521494 7871356 39470127 IR-PCI-MSI-edge eth0-rx-4 34: 1 0 0 0 IR-PCI-MSI-edge eth1-tx-0 35: 1 0 0 0 IR-PCI-MSI-edge eth1-rx-1 36: 1 0 0 0 IR-PCI-MSI-edge eth1-rx-2 37: 1 0 0 0 IR-PCI-MSI-edge eth1-rx-3 38: 1 0 0 0 IR-PCI-MSI-edge eth1-rx-4 NMI: 6586 7916 7078 6319 Non-maskable interrupts LOC: 3584951756 3813875575 3438816696 3366714129 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts ・・・・・・ |