On 2012-07-12 15:43, Jan Ceuleers wrote: > On 07/12/2012 03:23 PM, Udo van den Heuvel wrote: >> How to list what modules/programs are using that irq? > > cat /proc/interrupts
# cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 40 0 0 0 IO-APIC-edge timer 1: 1 4 91884 418 IO-APIC-edge i8042 4: 1 25 607223 1584 IO-APIC-edge serial 6: 0 0 8 0 IO-APIC-edge floppy 7: 1 0 0 0 IO-APIC-edge parport0 9: 0 0 0 0 IO-APIC-fasteoi acpi 12: 3 106 980333 3914 IO-APIC-edge i8042 14: 0 5 169732 457 IO-APIC-edge pata_atiixp 15: 0 0 0 0 IO-APIC-edge pata_atiixp 16: 0 0 3038 33 IO-APIC-fasteoi sata_sil24, ohci_hcd:usb1, ohci_hcd:usb2, snd_hda_intel 17: 0 4 24053 119 IO-APIC-fasteoi ehci_hcd:usb3 18: 25 190 18052161 21311 IO-APIC-fasteoi ohci_hcd:usb5, ohci_hcd:usb6, ohci_hcd:usb7 19: 1 9 187895 487 IO-APIC-fasteoi ehci_hcd:usb4 20: 7 135 3756346 8907 IO-APIC-fasteoi serial 22: 127 719 14673690 33318 IO-APIC-fasteoi ahci 43: 115 1072 33699508 73116 PCI-MSI-edge eth0 44: 27 252 3044666 11507 PCI-MSI-edge radeon 45: 0 0 21 0 PCI-MSI-edge snd_hda_intel NMI: 0 0 0 0 Non-maskable interrupts LOC: 15971203 15548951 13031603 13145359 Local timer interrupts SPU: 0 0 0 0 Spurious interrupts PMI: 0 0 0 0 Performance monitoring interrupts IWI: 0 0 0 0 IRQ work interrupts RTR: 0 0 0 0 APIC ICR read retries RES: 57916374 44634814 19199377 43219640 Rescheduling interrupts CAL: 2241 2293 2327 2196 Function call interrupts TLB: 577983 648537 579293 635466 TLB shootdowns THR: 0 0 0 0 Threshold APIC interrupts MCE: 0 0 0 0 Machine check exceptions MCP: 581 581 581 581 Machine check polls ERR: 0 MIS: 0 So what can we conclude? Kind regards, Udo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/