RE: /proc/interrupts

akumar@xxxxxxxxxxxxxxxxxx · Fri, 13 Jan 2006 13:54:46 +0530

  -----Original Message-----
From: Arvind Kumar 

Sent: Friday, January 13, 2006 12:39 PM
To: 'Rajaram 
  Suryanarayanan'; kernelnewbies@xxxxxxxxxxxx
Subject: RE: 
  /proc/interrupts

  irq 
  1 for keyboard
  irq 
  3 for serial mouse
  irq 
  12 for PS/2 mouse

    -----Original Message-----
From: Rajaram Suryanarayanan 
    [mailto:rajaram_linux@xxxxxxxxx]
Sent: Friday, January 13, 2006 
    12:28 PM
To: kernelnewbies@xxxxxxxxxxxx
Subject: 
    /proc/interrupts

     Hi,

I am trying to trace the IRQ number of 
    my keyboard and mouse from /proc/interrupts.

The contents of my 
    /proc/interrupts is

[root@localhost ~]# cat 
    /proc/interrupts

    CPU0
  0:     547208    
    IO-APIC-edge  timer

    7:          0    
    IO-APIC-edge  parport0

    8:         10    
    IO-APIC-edge  rtc

    9:          0   
    IO-APIC-level  
    acpi
 12:        
    102    IO-APIC-edge  
    i8042
 14:      18447    
    IO-APIC-edge  ide0
169:       
    6477   IO-APIC-level  eth0, 
    i915@pci:0000:00:02.0
185:      
    14483   IO-APIC-level  
    libata
193:       6420   
    IO-APIC-level  Intel ICH6, 
    uhci_hcd:usb5
201:          
    3   IO-APIC-level  ehci_hcd:usb1, 
    uhci_hcd:usb2
209:      40821   
    IO-APIC-level  
    uhci_hcd:usb3
217:          
    0   IO-APIC-level  
    uhci_hcd:usb4
NMI:          
    0
LOC:     
    547164
ERR:          
    0
MIS:          
    0
[root@localhost ~]#   

I am not able to find out which 
    IRQ above corresponds to the keyboard and mouse. I tried disable_irq() for 
    each one of the IRQs mentioned above, but nothing disabled the mouse or 
    keyboard. But disable_irq(169) disabled eth0 as expected. 

Can 
    anybody please help ?

Thanks,
Rajaram.

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