[ewg] [PATCH] mlx4_core: request MSIX vectors as much as there CPU cores

[Roland Dreier]

 > We found it in performance work of our EN (10G) driver

By the way, it would certainly make sense for the ethernet driver to use
a number of queues that matches num_online_cpus() at the time the
interface is brought up.  Since we can't change the # of MSI-X vectors
very easily I think we need to allow for the possible CPUs, but bouncing
a net interface seems lighter weight to me.

Although perhaps reloading a driver on CPU hotplug is OK too?

 - R.
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