path: root/drivers/infiniband/ulp
diff options
authorChuck Lever <chuck.lever@oracle.com>2019-07-29 13:22:09 -0400
committerDoug Ledford <dledford@redhat.com>2019-08-05 11:50:32 -0400
commit20cf4e026730104892fa1268de0371a631cee294 (patch)
tree08a7e60c303ff468d50a33d52e2bc98eab9b1b30 /drivers/infiniband/ulp
parentmlx5: Fix formats with line continuation whitespace (diff)
rdma: Enable ib_alloc_cq to spread work over a device's comp_vectors
Send and Receive completion is handled on a single CPU selected at the time each Completion Queue is allocated. Typically this is when an initiator instantiates an RDMA transport, or when a target accepts an RDMA connection. Some ULPs cannot open a connection per CPU to spread completion workload across available CPUs and MSI vectors. For such ULPs, provide an API that allows the RDMA core to select a completion vector based on the device's complement of available comp_vecs. ULPs that invoke ib_alloc_cq() with only comp_vector 0 are converted to use the new API so that their completion workloads interfere less with each other. Suggested-by: HÃ¥kon Bugge <haakon.bugge@oracle.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Leon Romanovsky <leonro@mellanox.com> Cc: <linux-cifs@vger.kernel.org> Cc: <v9fs-developer@lists.sourceforge.net> Link: https://lore.kernel.org/r/20190729171923.13428.52555.stgit@manet.1015granger.net Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/ulp')
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 1a039f16d315..e25c70a56be6 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -1767,8 +1767,8 @@ static int srpt_create_ch_ib(struct srpt_rdma_ch *ch)
goto out;
- ch->cq = ib_alloc_cq(sdev->device, ch, ch->rq_size + sq_size,
- 0 /* XXX: spread CQs */, IB_POLL_WORKQUEUE);
+ ch->cq = ib_alloc_cq_any(sdev->device, ch, ch->rq_size + sq_size,
if (IS_ERR(ch->cq)) {
ret = PTR_ERR(ch->cq);
pr_err("failed to create CQ cqe= %d ret= %d\n",