diff options
| author | Mike Marciniszyn | 2016-02-14 21:10:04 +0100 |
|---|---|---|
| committer | Doug Ledford | 2016-03-11 02:38:07 +0100 |
| commit | 46a80d62e6e0ccfc9d8a05c5b773405b84a4afd7 (patch) | |
| tree | 077ea38ac2f7fd75c1334deadcc141ad6753a009 /include/rdma/rdma_vt.h | |
| parent | IB/qib: Rename several functions by adding a "qib_" prefix (diff) | |
| download | kernel-qcow2-linux-46a80d62e6e0ccfc9d8a05c5b773405b84a4afd7.tar.gz kernel-qcow2-linux-46a80d62e6e0ccfc9d8a05c5b773405b84a4afd7.tar.xz kernel-qcow2-linux-46a80d62e6e0ccfc9d8a05c5b773405b84a4afd7.zip | |
IB/qib, staging/rdma/hfi1: add s_hlock for use in post send
This patch adds an additional lock to reduce contention on the s_lock.
This lock is used in post_send() so that the post_send is not
serialized with the send engine and other send related processing.
To do this the s_next_psn is now maintained on post_send() while
post_send() related fields are moved to a new cache line. There is
an s_avail maintained for the post_send() to mitigate trading cache
lines with the send engine. The lock is released/acquired around
releasing the just built packet to the egress mechanism.
Reviewed-by: Jubin John <jubin.john@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'include/rdma/rdma_vt.h')
| -rw-r--r-- | include/rdma/rdma_vt.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/rdma/rdma_vt.h b/include/rdma/rdma_vt.h index 5ccf683b28f1..aabd2e5bc5d7 100644 --- a/include/rdma/rdma_vt.h +++ b/include/rdma/rdma_vt.h @@ -220,6 +220,7 @@ struct rvt_ah { }; struct rvt_dev_info; +struct rvt_swqe; struct rvt_driver_provided { /* * The work to create port files in /sys/class Infiniband is different @@ -240,6 +241,7 @@ struct rvt_driver_provided { void (*qp_priv_free)(struct rvt_dev_info *rdi, struct rvt_qp *qp); void (*notify_qp_reset)(struct rvt_qp *qp); void (*schedule_send)(struct rvt_qp *qp); + void (*schedule_send_no_lock)(struct rvt_qp *qp); void (*do_send)(struct rvt_qp *qp); int (*get_pmtu_from_attr)(struct rvt_dev_info *rdi, struct rvt_qp *qp, struct ib_qp_attr *attr); @@ -273,7 +275,7 @@ struct rvt_driver_provided { void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr, int attr_mask, struct ib_udata *udata); - int (*check_send_wr)(struct rvt_qp *qp, struct ib_send_wr *wr); + int (*check_send_wqe)(struct rvt_qp *qp, struct rvt_swqe *wqe); void (*notify_create_mad_agent)(struct rvt_dev_info *rdi, int port_idx); void (*notify_free_mad_agent)(struct rvt_dev_info *rdi, int port_idx); |