support for partial irq affinity assignment

From	Christoph Hellwig <hch@lst.de>
Newsgroups	linux.kernel
Subject	support for partial irq affinity assignment
Date	2016-11-07 19:50 +0100
Message-ID	<sAX9w-71s-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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This series adds support for automatic interrupt assignment to devices
that have a few vectors that are set aside for admin or config purposes
and thus should not fall into the general per-cpu assginment pool.

The first patch adds that support to the core IRQ and PCI/msi code,
and the second is a small tweak to a block layer helper to make use
of it.  I'd love to have both go into the same tree so that consumers
of this (e.g. the virtio, scsi and rdma trees) only need to pull in
one of these trees as dependency.

Changes since V1:
 - split up into more patches (thanks to Thomas for the initial work)
 - simplify internal parameter passing a bit (also thanks to Thomas)

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support for partial irq affinity assignment Christoph Hellwig <hch@lst.de> - 2016-11-07 19:50 +0100
  [PATCH 1/7] genirq/affinity: Introduce struct irq_affinity Christoph Hellwig <hch@lst.de> - 2016-11-07 19:50 +0100
    Re: [PATCH 1/7] genirq/affinity: Introduce struct irq_affinity Johannes Thumshirn <jthumshirn@suse.de> - 2016-11-08 09:20 +0100
    Re: [PATCH 1/7] genirq/affinity: Introduce struct irq_affinity Hannes Reinecke <hare@suse.de> - 2016-11-08 09:20 +0100
    Re: [PATCH 1/7] genirq/affinity: Introduce struct irq_affinity Bjorn Helgaas <helgaas@kernel.org> - 2016-11-08 22:30 +0100
      Re: [PATCH 1/7] genirq/affinity: Introduce struct irq_affinity Christoph Hellwig <hch@lst.de> - 2016-11-08 23:40 +0100
  [PATCH 5/7] pci/msi: Provide pci_alloc_irq_vectors_affinity() Christoph Hellwig <hch@lst.de> - 2016-11-07 19:50 +0100
    Re: [PATCH 5/7] pci/msi: Provide pci_alloc_irq_vectors_affinity() Hannes Reinecke <hare@suse.de> - 2016-11-08 09:20 +0100
      Re: [PATCH 5/7] pci/msi: Provide pci_alloc_irq_vectors_affinity() Johannes Thumshirn <jthumshirn@suse.de> - 2016-11-08 09:30 +0100
    Re: [PATCH 5/7] pci/msi: Provide pci_alloc_irq_vectors_affinity() Bjorn Helgaas <helgaas@kernel.org> - 2016-11-08 22:20 +0100
      Re: [PATCH 5/7] pci/msi: Provide pci_alloc_irq_vectors_affinity() Christoph Hellwig <hch@lst.de> - 2016-11-08 22:30 +0100
  [PATCH 4/7] pci/msi: Propagate irq affinity description through the MSI code Christoph Hellwig <hch@lst.de> - 2016-11-07 19:50 +0100
    Re: [PATCH 4/7] pci/msi: Propagate irq affinity description through  the MSI code Hannes Reinecke <hare@suse.de> - 2016-11-08 09:20 +0100
    Re: [PATCH 4/7] pci/msi: Propagate irq affinity description through  the MSI code Johannes Thumshirn <jthumshirn@suse.de> - 2016-11-08 09:30 +0100
    Re: [PATCH 4/7] pci/msi: Propagate irq affinity description through  the MSI code Bjorn Helgaas <helgaas@kernel.org> - 2016-11-08 22:20 +0100
  [PATCH 7/7] blk-mq: add a first_vec argument to blk_mq_pci_map_queues Christoph Hellwig <hch@lst.de> - 2016-11-07 19:50 +0100
    Re: [PATCH 7/7] blk-mq: add a first_vec argument to  blk_mq_pci_map_queues Johannes Thumshirn <jthumshirn@suse.de> - 2016-11-08 09:30 +0100
  [PATCH 2/7] genirq/affinity: Handle pre/post vectors in irq_calc_affinity_vectors() Christoph Hellwig <hch@lst.de> - 2016-11-07 19:50 +0100
    Re: [PATCH 2/7] genirq/affinity: Handle pre/post vectors in  irq_calc_affinity_vectors() Hannes Reinecke <hare@suse.de> - 2016-11-08 09:20 +0100
      Re: [PATCH 2/7] genirq/affinity: Handle pre/post vectors in  irq_calc_affinity_vectors() Thomas Gleixner <tglx@linutronix.de> - 2016-11-08 15:50 +0100
  [PATCH 3/7] genirq/affinity: Handle pre/post vectors in irq_create_affinity_masks() Christoph Hellwig <hch@lst.de> - 2016-11-07 19:50 +0100
    Re: [PATCH 3/7] genirq/affinity: Handle pre/post vectors in  irq_create_affinity_masks() Hannes Reinecke <hare@suse.de> - 2016-11-08 09:20 +0100
      Re: [PATCH 3/7] genirq/affinity: Handle pre/post vectors in         irq_create_affinity_masks() Christoph Hellwig <hch@lst.de> - 2016-11-08 16:00 +0100
        Re: [PATCH 3/7] genirq/affinity: Handle pre/post vectors in  irq_create_affinity_masks() Hannes Reinecke <hare@suse.de> - 2016-11-08 16:00 +0100
          Re: [PATCH 3/7] genirq/affinity: Handle pre/post vectors in         irq_create_affinity_masks() Christoph Hellwig <hch@lst.de> - 2016-11-08 16:10 +0100
            Re: [PATCH 3/7] genirq/affinity: Handle pre/post vectors in         irq_create_affinity_masks() Christoph Hellwig <hch@lst.de> - 2016-11-08 17:40 +0100
            Re: [PATCH 3/7] genirq/affinity: Handle pre/post vectors in  irq_create_affinity_masks() Thomas Gleixner <tglx@linutronix.de> - 2016-11-08 17:40 +0100
    Re: [PATCH 3/7] genirq/affinity: Handle pre/post vectors in  irq_create_affinity_masks() Bjorn Helgaas <helgaas@kernel.org> - 2016-11-08 22:30 +0100
  [PATCH 6/7] pci: Remove the irq_affinity mask from struct pci_dev Christoph Hellwig <hch@lst.de> - 2016-11-07 20:00 +0100
    Re: [PATCH 6/7] pci: Remove the irq_affinity mask from struct pci_dev Hannes Reinecke <hare@suse.de> - 2016-11-08 09:20 +0100
    Re: [PATCH 6/7] pci: Remove the irq_affinity mask from struct pci_dev Johannes Thumshirn <jthumshirn@suse.de> - 2016-11-08 09:30 +0100
    Re: [PATCH 6/7] pci: Remove the irq_affinity mask from struct pci_dev Bjorn Helgaas <helgaas@kernel.org> - 2016-11-08 22:10 +0100

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