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From: David Miller <davem@davemloft.net>
To: amirv@mellanox.com
Cc: netdev@vger.kernel.org, ogerlitz@mellanox.com,
	talal@mellanox.com, achiad@mellanox.com, saeedm@mellanox.com
Subject: Re: [PATCH net-next V3 02/11] net/mlx5_core: Add EQ renaming mechanism
Date: Mon, 11 May 2015 13:40:08 -0400 (EDT)	[thread overview]
Message-ID: <20150511.134008.7539040783838247.davem@davemloft.net> (raw)
In-Reply-To: <1431250746-11941-3-git-send-email-amirv@mellanox.com>

From: Amir Vadai <amirv@mellanox.com>
Date: Sun, 10 May 2015 12:38:57 +0300

> +int mlx5_rename_eq(struct mlx5_core_dev *dev, int eq_ix, char *name)
> +{
> +	struct mlx5_priv *priv = &dev->priv;
> +	struct mlx5_eq_table *table = &priv->eq_table;
> +	struct mlx5_eq *eq;
> +	int err = -ENOENT;
> +
> +	spin_lock(&table->lock);
> +	list_for_each_entry(eq, &table->comp_eqs_list, list) {
> +		if (eq->index == eq_ix) {
> +			snprintf(priv->irq_info[eq_ix].name, MLX5_MAX_IRQ_NAME,
> +				 "%s-%d", name, eq_ix);
> +			err = 0;
> +			break;
> +		}
> +	}
> +	spin_unlock(&table->lock);
> +
> +	return err;
> +}

You have to be very careful with this.

If you change these names after the request_irq() call(s), the new name string
will not propagate to /proc/interrupts output etc.

Looking at your later patches, this seems to be invoked very late in
mlx5e_open_locked(), so I am concerned.

  reply	other threads:[~2015-05-11 17:40 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-10  9:38 [PATCH net-next V3 00/11] net/mlx5: ConnectX-4 100G Ethernet driver Amir Vadai
2015-05-10  9:38 ` [PATCH net-next V3 01/11] net/mlx5_core: Set irq affinity hints Amir Vadai
2015-05-10  9:38 ` [PATCH net-next V3 02/11] net/mlx5_core: Add EQ renaming mechanism Amir Vadai
2015-05-11 17:40   ` David Miller [this message]
2015-05-12 11:55     ` Amir Vadai
2015-05-14 15:19       ` Or Gerlitz
2015-05-10  9:38 ` [PATCH net-next V3 03/11] net/mlx5_core: HW data structs/types definitions cleanup Amir Vadai
2015-05-10  9:38 ` [PATCH net-next V3 04/11] net/mlx5_core: New device capabilities handling Amir Vadai
2015-05-10  9:39 ` [PATCH net-next V3 05/11] net/mlx5_core: Implement access functions of ptys register fields Amir Vadai
2015-05-10  9:39 ` [PATCH net-next V3 06/11] net/mlx5_core: Implement get/set port status Amir Vadai
2015-05-10  9:39 ` [PATCH net-next V3 07/11] net/mlx5_core: Modify CQ moderation parameters Amir Vadai
2015-05-10  9:39 ` [PATCH net-next V3 08/11] net/mlx5_core: Set/Query port MTU commands Amir Vadai
2015-05-10 16:32   ` Sergei Shtylyov
2015-05-12  8:19     ` Amir Vadai
2015-05-10  9:39 ` [PATCH net-next V3 09/11] net/mlx5: Ethernet Datapath files Amir Vadai
2015-05-10  9:39 ` [PATCH net-next V3 10/11] net/mlx5: Ethernet resource handling files Amir Vadai
2015-05-10  9:39 ` [PATCH net-next V3 11/11] net/mlx5: Extend mlx5_core to support ConnectX-4 Ethernet functionality Amir Vadai

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