Merge branch 'mvneta_percpu_irq'

Merge branch 'mvneta_percpu_irq'

Gregory CLEMENT says:

====================
net: mvneta: Switch to per-CPU irq and make rxq_def useful

As stated in the first version: "this patchset reworks the Marvell
neta driver in order to really support its per-CPU interrupts, instead
of faking them as SPI, and allow the use of any RX queue instead of
the hardcoded RX queue 0 that we have currently."

Following the review which has been done, Maxime started adding the
CPU hotplug support. I continued his work a few weeks ago and here is
the result.

Since the 1st version the main change is this CPU hotplug support, in
order to validate it I powered up and down the CPUs while performing
iperf. I ran the tests during hours: the kernel didn't crash and the
network interfaces were still usable. Of course it impacted the
performance, but continuously power down and up the CPUs is not
something we usually do.

I also reorganized the series, the 3 first patches should go through
the irq subsystem, whereas the 4 others should go to the network
subsystem.

However, there is a runtime dependency between the two parts. Patch 5
depend on the patch 3 to be able to use the percpu irq.

Thanks,

Gregory

PS: Thanks to Willy who gave me some pointers on how to deal with the
NAPI.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>