netdev - RFT: virtio_net: limit xmit polling

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Message-ID: <20110619102700.GA11198@redhat.com>
Date:	Sun, 19 Jun 2011 13:27:00 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Krishna Kumar2 <krkumar2@...ibm.com>
Cc:	Christian Borntraeger <borntraeger@...ibm.com>,
	Carsten Otte <cotte@...ibm.com>, habanero@...ux.vnet.ibm.com,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	kvm@...r.kernel.org, lguest@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
	linux390@...ibm.com, netdev@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	Martin Schwidefsky <schwidefsky@...ibm.com>, steved@...ibm.com,
	Tom Lendacky <tahm@...ux.vnet.ibm.com>,
	virtualization@...ts.linux-foundation.org,
	Shirley Ma <xma@...ibm.com>, roprabhu@...co.com
Subject: RFT: virtio_net: limit xmit polling

OK, different people seem to test different trees.  In the hope to get
everyone on the same page, I created several variants of this patch so
they can be compared. Whoever's interested, please check out the
following, and tell me how these compare:

kernel:

git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git

virtio-net-limit-xmit-polling/base - this is net-next baseline to test against
virtio-net-limit-xmit-polling/v0 - fixes checks on out of capacity
virtio-net-limit-xmit-polling/v1 - previous revision of the patch
		this does xmit,free,xmit,2*free,free
virtio-net-limit-xmit-polling/v2 - new revision of the patch
		this does free,xmit,2*free,free

There's also this on top:
virtio-net-limit-xmit-polling/v3 -> don't delay avail index update
I don't think it's important to test this one, yet

Userspace to use: event index work is not yet merged upstream
so the revision to use is still this:
git://git.kernel.org/pub/scm/linux/kernel/git/mst/qemu-kvm.git
virtio-net-event-idx-v3

-- 
MST
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