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blk-mq: Allow PCI vector offset for mapping queues

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The PCI interrupt vectors intended to be associated with a queue may
not start at 0; a driver may allocate pre_vectors for special use. This
patch adds an offset parameter so blk-mq may find the intended affinity
mask and updates all drivers using this API accordingly.

Cc: Don Brace <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Signed-off-by: Keith Busch <[email protected]>
Reviewed-by: Ming Lei <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Keith Busch 2018-03-27 09:39:06 -06:00 • committed by Jens Axboe
commit f23f5bece6
5 changed files with 9 additions and 6 deletions
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2
drivers/nvme/host/pci.c
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@ -414,7 +414,7 @@ static int nvme_pci_map_queues(struct blk_mq_tag_set *set)
{
struct nvme_dev *dev = set->driver_data;
return blk_mq_pci_map_queues(set, to_pci_dev(dev->dev));
return blk_mq_pci_map_queues(set, to_pci_dev(dev->dev), 0);
}
/**