netdev - Re: [PATCH mlx5-next 08/14] net/mlx5: Make mlx5_core messages independent from mdev->pdev

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Message-ID: <20190330080851.GQ22899@mtr-leonro.mtl.com>
Date:   Sat, 30 Mar 2019 08:08:56 +0000
From:   Leon Romanovsky <leonro@...lanox.com>
To:     Saeed Mahameed <saeedm@...lanox.com>
CC:     "saeed@...lanox.com" <saeed@...lanox.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        Huy Nguyen <huyn@...lanox.com>, Vu Pham <vuhuong@...lanox.com>
Subject: Re: [PATCH mlx5-next 08/14] net/mlx5: Make mlx5_core messages
 independent from mdev->pdev

On Fri, Mar 29, 2019 at 03:37:58PM -0700, Saeed Mahameed wrote:
> From: Huy Nguyen <huyn@...lanox.com>
>
> Detach mlx5_core mdev messages from pci device mdev->pdev messages and
> provide a better report/debug of different mlx5 device types.
>
> This patch does not change any functionality.
>
> Signed-off-by: Huy Nguyen <huyn@...lanox.com>
> Signed-off-by: Vu Pham <vuhuong@...lanox.com>
> Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
> ---
>  .../ethernet/mellanox/mlx5/core/mlx5_core.h   | 19 +++++++++----------
>  1 file changed, 9 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
> index 7b331674622c..052e81974c3b 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
> @@ -48,12 +48,12 @@
>  extern uint mlx5_core_debug_mask;
>
>  #define mlx5_core_dbg(__dev, format, ...)				\
> -	dev_dbg(&(__dev)->pdev->dev, "%s:%d:(pid %d): " format,		\
> +	pr_debug("%s:%s:%d:(pid %d): " format, (__dev)->priv.name,      \
>  		 __func__, __LINE__, current->pid,			\

I see that we printed PID even before this patch, but unfortunately it
is wrong and doesn't handle correctly kernel contexts.

If you are changing those debug prints, it will be nicer to use
CONFIG_PRINTK_CALLER instead like we are doing for the timestamps.

https://marc.info/?l=linux-rdma&m=155289145403897&w=2

Thanks

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