diff mbox series

[v2] IB/mlx5: avoid excessive warning msgs when creating VFs on 2nd port

Message ID 20180723211508.7078-1-qing.huang@oracle.com (mailing list archive)
State Accepted
Delegated to: Jason Gunthorpe
Headers show
Series [v2] IB/mlx5: avoid excessive warning msgs when creating VFs on 2nd port | expand

Commit Message

Qing Huang July 23, 2018, 9:15 p.m. UTC
When a CX5 device is configured in dual-port RoCE mode, after creating
many VFs against port 1, creating the same number of VFs against port 2
will flood kernel/syslog with something like
"mlx5_*:mlx5_ib_bind_slave_port:4266:(pid 5269): port 2 already
affiliated."

So basically, when traversing mlx5_ib_dev_list, mlx5_ib_add_slave_port()
repeatedly attempts to bind the new mpi structure to every device
on the list until it finds an unbound device.

Change the log level from warn to dbg to avoid log flooding as the warning
should be harmless.

Signed-off-by: Qing Huang <qing.huang@oracle.com>
---
  v1 -> v2: change the log level instead

 drivers/infiniband/hw/mlx5/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Daniel Jurgens July 23, 2018, 9:17 p.m. UTC | #1
On 7/23/2018 4:15 PM, Qing Huang wrote:
> When a CX5 device is configured in dual-port RoCE mode, after creating
> many VFs against port 1, creating the same number of VFs against port 2
> will flood kernel/syslog with something like
> "mlx5_*:mlx5_ib_bind_slave_port:4266:(pid 5269): port 2 already
> affiliated."
>
> So basically, when traversing mlx5_ib_dev_list, mlx5_ib_add_slave_port()
> repeatedly attempts to bind the new mpi structure to every device
> on the list until it finds an unbound device.
>
> Change the log level from warn to dbg to avoid log flooding as the warning
> should be harmless.
>
> Signed-off-by: Qing Huang <qing.huang@oracle.com>
> ---
>   v1 -> v2: change the log level instead
>
>  drivers/infiniband/hw/mlx5/main.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
> index b3ba9a2..f57b8f7 100644
> --- a/drivers/infiniband/hw/mlx5/main.c
> +++ b/drivers/infiniband/hw/mlx5/main.c
> @@ -5127,8 +5127,8 @@ static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev,
>  
>  	spin_lock(&ibdev->port[port_num].mp.mpi_lock);
>  	if (ibdev->port[port_num].mp.mpi) {
> -		mlx5_ib_warn(ibdev, "port %d already affiliated.\n",
> -			     port_num + 1);
> +		mlx5_ib_dbg(ibdev, "port %d already affiliated.\n",
> +			    port_num + 1);
>  		spin_unlock(&ibdev->port[port_num].mp.mpi_lock);
>  		return false;
>  	}
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
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Jason Gunthorpe July 26, 2018, 10:12 p.m. UTC | #2
On Mon, Jul 23, 2018 at 02:15:08PM -0700, Qing Huang wrote:
> When a CX5 device is configured in dual-port RoCE mode, after creating
> many VFs against port 1, creating the same number of VFs against port 2
> will flood kernel/syslog with something like
> "mlx5_*:mlx5_ib_bind_slave_port:4266:(pid 5269): port 2 already
> affiliated."
> 
> So basically, when traversing mlx5_ib_dev_list, mlx5_ib_add_slave_port()
> repeatedly attempts to bind the new mpi structure to every device
> on the list until it finds an unbound device.
> 
> Change the log level from warn to dbg to avoid log flooding as the warning
> should be harmless.
> 
> Signed-off-by: Qing Huang <qing.huang@oracle.com>
> Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
> ---
>   v1 -> v2: change the log level instead

Applied to for-next

Thanks,
Jason
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diff mbox series

Patch

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index b3ba9a2..f57b8f7 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -5127,8 +5127,8 @@  static bool mlx5_ib_bind_slave_port(struct mlx5_ib_dev *ibdev,
 
 	spin_lock(&ibdev->port[port_num].mp.mpi_lock);
 	if (ibdev->port[port_num].mp.mpi) {
-		mlx5_ib_warn(ibdev, "port %d already affiliated.\n",
-			     port_num + 1);
+		mlx5_ib_dbg(ibdev, "port %d already affiliated.\n",
+			    port_num + 1);
 		spin_unlock(&ibdev->port[port_num].mp.mpi_lock);
 		return false;
 	}