From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <michael@ellerman.id.au>
Subject: Re: [PATCH] [POWERPC] Support setting affinity for U3/U4 MSI sources
From: Michael Ellerman <michael@ellerman.id.au>
To: Olof Johansson <olof@lixom.net>
In-Reply-To: <20070917201229.GA17302@lixom.net>
References: <20070917201229.GA17302@lixom.net>
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Date: Thu, 20 Sep 2007 16:36:06 +1000
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On Mon, 2007-09-17 at 15:12 -0500, Olof Johansson wrote:
> Hook up affinity-setting for U3/U4 MSI interrupt sources.
>=20
> Tested on Quad G5 with myri10ge.

And a JS21 blade:

# echo 1 > /proc/irq/21/smp_affinity=20
# cat /proc/interrupts=20
           CPU0       CPU1      =20
 21:        126        375  MPIC-U3MSI Edge      eth1
# ping -c 1000 -f cradle
1000 packets transmitted, 1000 received, 0% packet loss, time 135ms
# cat /proc/interrupts=20
           CPU0       CPU1      =20
 21:       2153        375  MPIC-U3MSI Edge      eth1
# echo 2 > /proc/irq/21/smp_affinity=20
# cat /proc/interrupts=20
           CPU0       CPU1      =20
 21:       2174        379  MPIC-U3MSI Edge      eth1
# ping -c 1000 -f cradle
1000 packets transmitted, 1000 received, 0% packet loss, time 138ms
# cat /proc/interrupts=20
           CPU0       CPU1      =20
 21:       2174       2389  MPIC-U3MSI Edge      eth1


Acked-by: Michael Ellerman <michael@ellerman.id.au>

cheers

--=20
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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