netdev - Re: [PATCH net-next] {net,IB}/mlx4: Initialize CQ buffers in the driver when possible

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Message-Id: <20181122.113929.263542711882893251.davem@davemloft.net>
Date:   Thu, 22 Nov 2018 11:39:29 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     tariqt@...lanox.com
Cc:     netdev@...r.kernel.org, eranbe@...lanox.com, danielj@...lanox.com,
        jackm@....mellanox.co.il
Subject: Re: [PATCH net-next] {net,IB}/mlx4: Initialize CQ buffers in the
 driver when possible

From: Tariq Toukan <tariqt@...lanox.com>
Date: Wed, 21 Nov 2018 17:12:05 +0200

> From: Daniel Jurgens <danielj@...lanox.com>
> 
> Perform CQ initialization in the driver when the capability is supported
> by the FW.  When passing the CQ to HW indicate that the CQ buffer has
> been pre-initialized.
> 
> Doing so decreases CQ creation time.  Testing on P8 showed a single 2048
> entry CQ creation time was reduced from ~395us to ~170us, which is
> 2.3x faster.
> 
> Signed-off-by: Daniel Jurgens <danielj@...lanox.com>
> Signed-off-by: Jack Morgenstein <jackm@....mellanox.co.il>
> Signed-off-by: Tariq Toukan <tariqt@...lanox.com>

Applied.