RE: [PATCH] Add irq host and hwirq pair fields to output whenshowing interrupts.

quoted

Now, regarding the patch itself, printing the hw irq is not 
that useful
without some indication of which host it belongs to. Best is to add a
name() or something like that to the host ops.

Sure, can I use the PIC controller node full name from of_tree as the
host name?

There is no 1:1 relationship between an OF node and an irq host. (There
is -most- of the time but I left the irq core on purpose more flexible,
hence the match() method. On some setups it makes sense to have multiple
HW PICs share a single domain number (for example on cell).

Thus I'd rather have a way for the host to give you that name, which in
turn can be the OF path if there is such a thing, or something else...

Best might be 4 columns:

<virq> <hwirq> <pic name> <host name>

(PIC name is the same as in /proc/interrupts).
 

Do you prefer debugfs instead of /proc/interrupts?

Yes, at least for now. Maybe if we can convince ourselves that nothing
significant would break of changing /proc/interrupts, then we can add
stuffs to it, but I'd rather avoid.

Ben.