[ofa-general] RE: [PATCH] core/mthca: Distinguish multiple IB cards in /proc/interrupts

Arputham Benjamin abenjamin at sgi.com
Thu May 21 16:23:17 PDT 2009


> I disagree.  A verbs consumer of mlx4 doesn't have to worry about the
> internal design of the driver being different from mthca, and I would
> hope that carries over to indentifying interrupts.  It's much better for
> users if we can just come up with a solution that handles both of your
> cases at once, rather than an ad hoc solution for a subset of drivers.

I was not suggesting that we change the interface to verbs consumer/user
or how we present the interrupt info. to user between mlx4 and mthca. 
I agree that it's much better if we can just come up with a solution
that handles both.

Any plan to merge the functionality of ib_core and mlx4_core into something
like 'ofa_core' that will control resource allocation for both Infiniband 
and Ethernet functions? A single core will help in any similar resource issues.

> I already suggested adding MSI-X vector information to
> /sys/devices/... to match the existing "irq" file there.  That would
> allow userspace to figure out which interrupt belonged where.  Jason's
> idea of adding the PCI device name to the interrupt name seems viable to
> me as well.

>  - R.

Don't we need both /sys/devices/... and /proc/interrupts?

Regards,
Benjamin


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