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From: Jason Gunthorpe <jgg@mellanox.com>
To: Leon Romanovsky <leon@kernel.org>
Cc: Doug Ledford <dledford@redhat.com>,
	Leon Romanovsky <leonro@mellanox.com>,
	RDMA mailing list <linux-rdma@vger.kernel.org>,
	Majd Dibbiny <majd@mellanox.com>, Mark Zhang <markz@mellanox.com>,
	Saeed Mahameed <saeedm@mellanox.com>,
	linux-netdev <netdev@vger.kernel.org>
Subject: Re: [PATCH rdma-next v4 06/17] RDMA/counter: Add "auto" configuration mode support
Date: Sun, 30 Jun 2019 00:40:54 +0000
Message-ID: <20190630004048.GB7173@mellanox.com> (raw)
In-Reply-To: <20190618172625.13432-7-leon@kernel.org>

On Tue, Jun 18, 2019 at 08:26:14PM +0300, Leon Romanovsky wrote:

> +static void __rdma_counter_dealloc(struct rdma_counter *counter)
> +{
> +	mutex_lock(&counter->lock);
> +	counter->device->ops.counter_dealloc(counter);
> +	mutex_unlock(&counter->lock);
> +}

Does this lock do anything? The kref is 0 at this point, so no other
thread can have a pointer to this lock.

> +
> +static void rdma_counter_dealloc(struct rdma_counter *counter)
> +{
> +	if (!counter)
> +		return;

Counter is never NULL.

Jason

  parent reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-18 17:26 [PATCH rdma-next v4 00/17] Statistics counter support Leon Romanovsky
2019-06-18 17:26 ` [PATCH mlx5-next v4 01/17] net/mlx5: Add rts2rts_qp_counters_set_id field in hca cap Leon Romanovsky
2019-06-18 18:47   ` Saeed Mahameed
2019-06-18 17:26 ` [PATCH rdma-next v4 02/17] RDMA/restrack: Introduce statistic counter Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 03/17] RDMA/restrack: Add an API to attach a task to a resource Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 04/17] RDMA/restrack: Make is_visible_in_pid_ns() as an API Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 05/17] RDMA/counter: Add set/clear per-port auto mode support Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 06/17] RDMA/counter: Add "auto" configuration " Leon Romanovsky
2019-06-30  0:32   ` Jason Gunthorpe
2019-06-30  0:40   ` Jason Gunthorpe [this message]
2019-07-01  8:42     ` Leon Romanovsky
2019-06-18 17:26 ` [PATCH mlx5-next v4 07/17] IB/mlx5: Support set qp counter Leon Romanovsky
2019-06-18 18:49   ` Saeed Mahameed
2019-06-18 17:26 ` [PATCH rdma-next v4 08/17] IB/mlx5: Add counter set id as a parameter for mlx5_ib_query_q_counters() Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 09/17] IB/mlx5: Support statistic q counter configuration Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 10/17] RDMA/nldev: Allow counter auto mode configration through RDMA netlink Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 11/17] RDMA/netlink: Implement counter dumpit calback Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 12/17] IB/mlx5: Add counter_alloc_stats() and counter_update_stats() support Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 13/17] RDMA/core: Get sum value of all counters when perform a sysfs stat read Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 14/17] RDMA/counter: Allow manual mode configuration support Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 15/17] RDMA/nldev: Allow counter manual mode configration through RDMA netlink Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 16/17] RDMA/nldev: Allow get counter mode " Leon Romanovsky
2019-06-18 17:26 ` [PATCH rdma-next v4 17/17] RDMA/nldev: Allow get default counter statistics " Leon Romanovsky

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