linux-kernel - Re: [PATCH v3 03/11] net/mlx5e: Remove unlikely() from WARN*() condition

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Message-Id: <20190830.195004.827507363244913502.davem@davemloft.net>
Date:   Fri, 30 Aug 2019 19:50:04 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     saeedm@...lanox.com
Cc:     efremov@...ux.com, linux-kernel@...r.kernel.org, joe@...ches.com,
        borisp@...lanox.com, netdev@...r.kernel.org, leon@...nel.org,
        akpm@...ux-foundation.org
Subject: Re: [PATCH v3 03/11] net/mlx5e: Remove unlikely() from WARN*()
 condition

From: Saeed Mahameed <saeedm@...lanox.com>
Date: Thu, 29 Aug 2019 21:23:30 +0000

> On Thu, 2019-08-29 at 19:50 +0300, Denis Efremov wrote:
>> "unlikely(WARN_ON_ONCE(x))" is excessive. WARN_ON_ONCE() already uses
>> unlikely() internally.
>> 
>> Signed-off-by: Denis Efremov <efremov@...ux.com>
>> Cc: Boris Pismenny <borisp@...lanox.com>
>> Cc: Saeed Mahameed <saeedm@...lanox.com>
>> Cc: Leon Romanovsky <leon@...nel.org>
>> Cc: Joe Perches <joe@...ches.com>
>> Cc: Andrew Morton <akpm@...ux-foundation.org>
>> Cc: netdev@...r.kernel.org
>> ---
>>  drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git
>> a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
>> b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
>> index 7833ddef0427..e5222d17df35 100644
>> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
>> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_tx.c
>> @@ -408,7 +408,7 @@ struct sk_buff *mlx5e_ktls_handle_tx_skb(struct
>> net_device *netdev,
>>  		goto out;
>>  
>>  	tls_ctx = tls_get_ctx(skb->sk);
>> -	if (unlikely(WARN_ON_ONCE(tls_ctx->netdev != netdev)))
>> +	if (WARN_ON_ONCE(tls_ctx->netdev != netdev))
>>  		goto err_out;
>>  
>>  	priv_tx = mlx5e_get_ktls_tx_priv_ctx(tls_ctx);
> 
> Acked-by: Saeed Mahameed <saeedm@...lanox.com>
> 
> Dave, you can take this one.

Ok, applied to net-next as well as the UDP patch.