diff options
| author | Maor Gottlieb <maorg@mellanox.com> | 2017-05-30 10:29:14 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-07-24 17:40:22 +0300 |
| commit | fe248c3a5837848717ed566fb4aefe66f43a5e53 (patch) | |
| tree | a130f4950fb15723de97cd5938c992ea840a1ba6 /drivers/infiniband/hw/mlx5/qp.c | |
| parent | 03404e8ae652e02a5e3388224836cef53d7a0988 (diff) | |
| download | linux-fe248c3a5837848717ed566fb4aefe66f43a5e53.tar.xz | |
IB/mlx5: Add delay drop configuration and statistics
Add debugfs interface for monitor the number of delay drop timeout
events and the number of existing dropless RQs in the system.
In addition add debugfs interface for configuring the global timeout value
which is used in the SET_DELAY_DROP command.
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/qp.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 939553d5c25f..c5d8ec839e99 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -675,10 +675,14 @@ err_umem: return err; } -static void destroy_user_rq(struct ib_pd *pd, struct mlx5_ib_rwq *rwq) +static void destroy_user_rq(struct mlx5_ib_dev *dev, struct ib_pd *pd, + struct mlx5_ib_rwq *rwq) { struct mlx5_ib_ucontext *context; + if (rwq->create_flags & MLX5_IB_WQ_FLAGS_DELAY_DROP) + atomic_dec(&dev->delay_drop.rqs_cnt); + context = to_mucontext(pd->uobject->context); mlx5_ib_db_unmap_user(context, &rwq->db); if (rwq->umem) @@ -4612,6 +4616,9 @@ static int set_delay_drop(struct mlx5_ib_dev *dev) dev->delay_drop.activate = true; out: mutex_unlock(&dev->delay_drop.lock); + + if (!err) + atomic_inc(&dev->delay_drop.rqs_cnt); return err; } @@ -4824,7 +4831,7 @@ struct ib_wq *mlx5_ib_create_wq(struct ib_pd *pd, err_copy: mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp); err_user_rq: - destroy_user_rq(pd, rwq); + destroy_user_rq(dev, pd, rwq); err: kfree(rwq); return ERR_PTR(err); @@ -4836,7 +4843,7 @@ int mlx5_ib_destroy_wq(struct ib_wq *wq) struct mlx5_ib_rwq *rwq = to_mrwq(wq); mlx5_core_destroy_rq_tracked(dev->mdev, &rwq->core_qp); - destroy_user_rq(wq->pd, rwq); + destroy_user_rq(dev, wq->pd, rwq); kfree(rwq); return 0; |