powertop - separating devices on the same IRQ

[Arjan van de Ven]

Bill Nottingham wrote:
> Is there a way to determine which device is causing the interrupt when
> multiple devices share an IRQ? As my laptop has 11 devices on IRQ 11
> (nice symmetry), it tends to dominate the results.
> 

this is unfortunately a really really hard problem.
even the kernel only has really partial information here; and it 
doesn't export the little information it does have.