diff options
| author | Bart Van Assche <bvanassche@acm.org> | 2013-10-26 16:40:37 +0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-11-09 02:43:17 +0400 |
| commit | 4d73f95f708ce540a85113b00f5363d0593d871d (patch) | |
| tree | ffd6af3d00a9329a07a41abed801ccedef1285af /drivers/infiniband/ulp/srp/ib_srp.h | |
| parent | b81d00bddfdccf000f29a5ba5bf7caa8f26fa00b (diff) | |
| download | linux-4d73f95f708ce540a85113b00f5363d0593d871d.tar.xz | |
IB/srp: Make queue size configurable
Certain storage configurations, e.g. a sufficiently large array of
hard disks in a RAID configuration, need a queue depth above 64 to
achieve optimal performance. Hence make the queue depth configurable.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: David Dillow <dillowda@ornl.gov>
Tested-by: Jack Wang <xjtuwjp@gmail.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/ulp/srp/ib_srp.h')
| -rw-r--r-- | drivers/infiniband/ulp/srp/ib_srp.h | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h index 446b0452107b..575681063f38 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.h +++ b/drivers/infiniband/ulp/srp/ib_srp.h @@ -57,14 +57,11 @@ enum { SRP_MAX_LUN = 512, SRP_DEF_SG_TABLESIZE = 12, - SRP_RQ_SHIFT = 6, - SRP_RQ_SIZE = 1 << SRP_RQ_SHIFT, - - SRP_SQ_SIZE = SRP_RQ_SIZE, + SRP_DEFAULT_QUEUE_SIZE = 1 << 6, SRP_RSP_SQ_SIZE = 1, - SRP_REQ_SQ_SIZE = SRP_SQ_SIZE - SRP_RSP_SQ_SIZE, SRP_TSK_MGMT_SQ_SIZE = 1, - SRP_CMD_SQ_SIZE = SRP_REQ_SQ_SIZE - SRP_TSK_MGMT_SQ_SIZE, + SRP_DEFAULT_CMD_SQ_SIZE = SRP_DEFAULT_QUEUE_SIZE - SRP_RSP_SQ_SIZE - + SRP_TSK_MGMT_SQ_SIZE, SRP_TAG_NO_REQ = ~0U, SRP_TAG_TSK_MGMT = 1U << 31, @@ -156,6 +153,8 @@ struct srp_target_port { char target_name[32]; unsigned int scsi_id; unsigned int sg_tablesize; + int queue_size; + int req_ring_size; int comp_vector; int tl_retry_count; @@ -173,9 +172,9 @@ struct srp_target_port { int zero_req_lim; - struct srp_iu *tx_ring[SRP_SQ_SIZE]; - struct srp_iu *rx_ring[SRP_RQ_SIZE]; - struct srp_request req_ring[SRP_CMD_SQ_SIZE]; + struct srp_iu **tx_ring; + struct srp_iu **rx_ring; + struct srp_request *req_ring; struct work_struct tl_err_work; struct work_struct remove_work; |