netdev - Re: [PATCH net-next-2.6 1/5] genirq: Add IRQ affinity notifiers

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Message-ID: <alpine.LFD.2.00.1101192229500.3211@localhost6.localdomain6>
Date:	Wed, 19 Jan 2011 22:39:04 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	David Miller <davem@...emloft.net>
cc:	bhutchings@...arflare.com, netdev@...r.kernel.org,
	linux-net-drivers@...arflare.com, therbert@...gle.com
Subject: Re: [PATCH net-next-2.6 1/5] genirq: Add IRQ affinity notifiers

On Wed, 19 Jan 2011, David Miller wrote:
> From: Thomas Gleixner <tglx@...utronix.de>
> Date: Wed, 19 Jan 2011 22:19:04 +0100 (CET)
> 
> > B1;2401;0cOn Wed, 19 Jan 2011, Ben Hutchings wrote:
> > 
> >> When initiating I/O on a multiqueue and multi-IRQ device, we may want
> >> to select a queue for which the response will be handled on the same
> >> or a nearby CPU.  This requires a reverse-map of IRQ affinity.  Add a
> >> notification mechanism to support this.
> >> 
> >> This is based closely on work by Thomas Gleixner <tglx@...utronix.de>.
> >> 
> >> Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
> >> ---
> >> Thomas, I hope this answers all your comments.  If you are happy with
> >> this, can it go into net-next-2.6 so the rest of this series can get
> >> into 2.6.39?
> > 
> > Looks good, but I prefer to take it via the tip/genirq branch as I
> > have other changes pending to that code. I'll put this into a separate
> > branch based on rc1 as a single commit so Dave can pull that branch
> > into netdev. Dave ?
> 
> But if you do that what happens down the line when Linus pulls our trees
> in?
> 
> If he takes your tip/genirq first, I have merge hassles to deal with.
> 
> If he takes the -rc1 relative version I end up with, you'll have the
> merge hassles.
 
Nothing will happen and no hassels at all, because your tree and my
tree have the exact same commit with the exact same sha1. You don't
have further changes in your tree which touch genirq stuff and I don't
have anything which touches net.

Thanks,

	tglx
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