通过硬件中断统计，可以查看中断是否发生，驱动查看中断触发判定一些信息
cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
17: 0 0 0 0 GICv2 29 Level arch_timer
18: 123325 77009 109658 95752 GICv2 30 Level arch_timer
23: 7343 0 0 0 GICv2 114 Level DMA IRQ
25: 0 0 0 0 GICv2 116 Level DMA IRQ
26: 0 0 0 0 GICv2 117 Level DMA IRQ
31: 4611 0 0 0 GICv2 65 Level fe00b880.mailbox
34: 6648 0 0 0 GICv2 153 Level uart-pl011
35: 10 0 0 0 GICv2 125 Level ttyS0
36: 1 0 0 0 GICv2 149 Level fe804000.i2c
37: 1068210 0 0 0 GICv2 105 Level fe980000.usb, fe980000.usb, dwc2_hsotg:usb3
39: 0 0 0 0 GICv2 169 Level brcmstb_thermal
40: 1034378 0 0 0 GICv2 158 Level mmc1, mmc0
42: 0 0 0 0 GICv2 48 Level arm-pmu
43: 0 0 0 0 GICv2 49 Level arm-pmu
44: 0 0 0 0 GICv2 50 Level arm-pmu
45: 0 0 0 0 GICv2 51 Level arm-pmu
46: 0 0 0 0 GICv2 106 Level v3d
48: 37808 0 0 0 GICv2 189 Level eth0
49: 31 0 0 0 GICv2 190 Level eth0
55: 48 0 0 0 GICv2 66 Level VCHIQ doorbell
56: 0 0 0 0 GICv2 175 Level PCIe PME, aerdrv
57: 39 0 0 0 Brcm_MSI 524288 Edge xhci_hcd
IPI0: 0 0 0 0 CPU wakeup interrupts
IPI1: 0 0 0 0 Timer broadcast interrupts
IPI2: 26104 40817 208753 110250 Rescheduling interrupts
IPI3: 984 3141 1986 3007 Function call interrupts
IPI4: 0 0 0 0 CPU stop interrupts
IPI5: 29560 7146 18326 22676 IRQ work interrupts
IPI6: 0 0 0 0 completion interrupts
Err: 0
- 逻辑中断号
- 中断在各CPU发生的次数
- 中断所属设备类名称
- 硬件中断号
- 中断处理函数。