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block: Add rdma affinity based queue mapping helper

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Like pci and virtio, we add a rdma helper for affinity
spreading. This achieves optimal mq affinity assignments
according to the underlying rdma device affinity maps.

Reviewed-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg
2017-07-13 11:09:43 +03:00
committed by Doug Ledford
parent 40b24403f3
commit 24c5dc6610
4 changed files with 68 additions and 0 deletions
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10
include/linux/blk-mq-rdma.h Normal file
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#ifndef _LINUX_BLK_MQ_RDMA_H
#define _LINUX_BLK_MQ_RDMA_H
struct blk_mq_tag_set;
struct ib_device;
int blk_mq_rdma_map_queues(struct blk_mq_tag_set *set,
struct ib_device *dev, int first_vec);
#endif /* _LINUX_BLK_MQ_RDMA_H */