linux-kernel - Re: automatic interrupt affinity for MSI/MSI-X capable devices V3

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Message-ID: <alpine.DEB.2.11.1607041227340.4083@nanos>
Date:	Mon, 4 Jul 2016 12:30:05 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Christoph Hellwig <hch@....de>
cc:	axboe@...com, agordeev@...hat.com, linux-block@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-nvme@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: automatic interrupt affinity for MSI/MSI-X capable devices V3

On Mon, 4 Jul 2016, Christoph Hellwig wrote:

> This series enhances the irq and PCI code to allow spreading around MSI and
> MSI-X vectors so that they have per-cpu affinity if possible, or at least
> per-node.  For that it takes the algorithm from blk-mq, moves it to
> a common place, and makes it available through a vastly simplified PCI
> interrupt allocation API.  It then switches blk-mq to be able to pick up
> the queue mapping from the device if available, and demonstrates all this
> using the NVMe driver.
> 
> Compared to the last posting the core IRQ changes are stable and it would
> be great to get them merged int the tip tree.  The two PCI patches have
> been completely rewritten after feedback from Alexander, while the block
> changes have also been stable.

I applied the first 6 patches. They are available in a seperate branch:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/for-block

and integrated into the irq/core branch. irq/for-block can be pulled from the
block folks if required.

Thanks,

	tglx