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| author |   Yonatan Cohen <yonatanc@mellanox.com> | 2017-11-13 10:51:13 +0200 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-11-13 16:59:22 -0500 |
| commit | 869ddcf8b351ace5bf8860f3cd6265dccb382426 (patch) | |
| tree | 52e0134b73d34d90a96c6a0c036c8ca8da0fc4ed /drivers/infiniband/core/uverbs.h | |
| parent | iw_cxgb4: atomically flush the qp (diff) | |
| download | linux-dev-869ddcf8b351ace5bf8860f3cd6265dccb382426.tar.xz linux-dev-869ddcf8b351ace5bf8860f3cd6265dccb382426.zip | |
IB/uverbs: Allow CQ moderation with modify CQ
Uverbs support in modify_cq for CQ moderation only.
Gives ability to change cq_max_count and cq_period.
CQ moderation enhance performance by moderating the number
of CQEs needed to create an event instead of application
having to suffer from event per-CQE.
To achieve CQ moderation the application needs to set cq_max_count
and cq_period.
cq_max_count - defines the number of CQEs needed to create an event.
cq_period - defines the timeout (micro seconds) between last
event and a new one that will occur even if
cq_max_count was not satisfied
Signed-off-by: Yonatan Cohen <yonatanc@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/uverbs.h')
| -rw-r--r-- | drivers/infiniband/core/uverbs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h index ee2739ae4305..deccefb71a6b 100644 --- a/drivers/infiniband/core/uverbs.h +++ b/drivers/infiniband/core/uverbs.h @@ -306,5 +306,6 @@ IB_UVERBS_DECLARE_EX_CMD(destroy_wq); IB_UVERBS_DECLARE_EX_CMD(create_rwq_ind_table); IB_UVERBS_DECLARE_EX_CMD(destroy_rwq_ind_table); IB_UVERBS_DECLARE_EX_CMD(modify_qp); +IB_UVERBS_DECLARE_EX_CMD(modify_cq); #endif /* UVERBS_H */ |