Re: IRQs in /proc/irq/* that aren't listed in /proc/interrupts?

[Chris Friesen]

On 10/12/2020 1:37 PM, Thomas Gleixner wrote:
> On Mon, Oct 12 2020 at 12:40, Chris Friesen wrote:
> > On one of my X86-64 systems /proc/interrupts starts with the following
> > interrupts (per-cpu info snipped):
> >
> >     0:      IR-IO-APIC-edge      timer
> >      4:      IR-IO-APIC-edge      serial
> >      8:      IR-IO-APIC-edge      rtc0
> >      9:      IR-IO-APIC-fasteoi   acpi
> >     17:      IR-IO-APIC-fasteoi   ehci_hcd:usb1, hpilo
> >
> >
> > On this same system /proc/irq shows these interrupts:
> >
> > 0-15, 17
> >
> > Is there any way to determine what the interrupts are that aren't listed
> > in /proc/interrupts?
>
> They are simply unused

I wonder if it might be clearer to just not report them at all if 
they're not used?

Anyways, thanks for the explanation.

Chris