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From: Christoph Hellwig <hch@lst.de>
To: tglx@linutronix.de, axboe@fb.com
Cc: linux-block@vger.kernel.org, linux-pci@vger.kernel.org,
	linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: automatic interrupt affinity for MSI/MSI-X capable devices V2
Date: Tue, 14 Jun 2016 21:58:53 +0200	[thread overview]
Message-ID: <1465934346-20648-1-git-send-email-hch@lst.de> (raw)

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.

There also is a git tree available at:

   git://git.infradead.org/users/hch/block.git

Gitweb:

   http://git.infradead.org/users/hch/block.git/shortlog/refs/heads/msix-spreading.4

Changes since V1:
 - irq core improvements to properly assign the affinity before
   request_irq (tglx)
 - better handling of the MSI vs MSI-X differences in the low level
   MSI allocator (hch and tglx)
 - various improvements to pci_alloc_irq_vectors (hch)
 - remove blk-mq hardware queue reassigned on hotplug cpu events (hch)
 - forward ported to Jens' current for-next tree (hch)

             reply	other threads:[~2016-06-14 19:59 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-14 19:58 Christoph Hellwig [this message]
2016-06-14 19:58 ` [PATCH 01/13] irq/msi: Remove unused MSI_FLAG_IDENTITY_MAP Christoph Hellwig
2016-06-16  9:05   ` Bart Van Assche
2016-06-14 19:58 ` [PATCH 02/13] irq: Introduce IRQD_AFFINITY_MANAGED flag Christoph Hellwig
2016-06-15  8:44   ` Bart Van Assche
2016-06-15 10:23     ` Christoph Hellwig
2016-06-15 10:42       ` Bart Van Assche
2016-06-15 15:14         ` Keith Busch
2016-06-15 15:28           ` Bart Van Assche
2016-06-15 16:03             ` Keith Busch
2016-06-15 19:36               ` Bart Van Assche
2016-06-15 20:06                 ` Keith Busch
2016-06-15 20:12                   ` Keith Busch
2016-06-15 20:50                     ` Bart Van Assche
2016-06-16 15:19                       ` Keith Busch
2016-06-22 11:56                         ` Alexander Gordeev
2016-06-16 15:20                 ` Christoph Hellwig
2016-06-16 15:39                   ` Bart Van Assche
2016-06-20 12:22                     ` Christoph Hellwig
2016-06-20 13:21                       ` Bart Van Assche
2016-06-21 14:31                         ` Christoph Hellwig
2016-06-16  9:08   ` Bart Van Assche
2016-06-14 19:58 ` [PATCH 03/13] irq: Add affinity hint to irq allocation Christoph Hellwig
2016-06-14 19:58 ` [PATCH 04/13] irq: Use affinity hint in irqdesc allocation Christoph Hellwig
2016-06-14 19:58 ` [PATCH 05/13] irq/msi: Make use of affinity aware allocations Christoph Hellwig
2016-06-14 19:58 ` [PATCH 06/13] irq: add a helper spread an affinity mask for MSI/MSI-X vectors Christoph Hellwig
2016-06-14 21:54   ` Guilherme G. Piccoli
2016-06-15  8:35     ` Bart Van Assche
2016-06-15 10:10     ` Christoph Hellwig
2016-06-15 13:09       ` Guilherme G. Piccoli
2016-06-16 15:16         ` Christoph Hellwig
2016-06-25 20:05   ` Alexander Gordeev
2016-06-30 17:48     ` Christoph Hellwig
2016-07-01  7:25       ` Alexander Gordeev
2016-06-14 19:59 ` [PATCH 07/13] pci: Provide sensible irq vector alloc/free routines Christoph Hellwig
2016-06-23 11:16   ` Alexander Gordeev
2016-06-30 16:54     ` Christoph Hellwig
2016-06-30 17:28       ` Alexander Gordeev
2016-06-30 17:35         ` Christoph Hellwig
2016-06-14 19:59 ` [PATCH 08/13] pci: spread interrupt vectors in pci_alloc_irq_vectors Christoph Hellwig
2016-06-25 20:22   ` Alexander Gordeev
2016-06-14 19:59 ` [PATCH 09/13] blk-mq: don't redistribute hardware queues on a CPU hotplug event Christoph Hellwig
2016-06-14 19:59 ` [PATCH 10/13] blk-mq: only allocate a single mq_map per tag_set Christoph Hellwig
2016-06-14 19:59 ` [PATCH 11/13] blk-mq: allow the driver to pass in an affinity mask Christoph Hellwig
2016-07-04  8:15   ` Alexander Gordeev
2016-07-04  8:38     ` Christoph Hellwig
2016-07-04  9:35       ` Alexander Gordeev
2016-07-10  3:41         ` Christoph Hellwig
2016-07-12  6:42           ` Alexander Gordeev
2016-06-14 19:59 ` [PATCH 12/13] nvme: switch to use pci_alloc_irq_vectors Christoph Hellwig
2016-06-14 19:59 ` [PATCH 13/13] nvme: remove the post_scan callout Christoph Hellwig
2016-06-16  9:45 ` automatic interrupt affinity for MSI/MSI-X capable devices V2 Bart Van Assche
2016-06-16 15:22   ` Christoph Hellwig
2016-06-26 19:40 ` Alexander Gordeev

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