netdev - Re: [PATCH net-next] net/mlx4_en: avoid indirect call in TX completion

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Date:   Sat, 18 Apr 2020 15:37:10 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     David Miller <davem@...emloft.net>, edumazet@...gle.com
Cc:     netdev@...r.kernel.org, eric.dumazet@...il.com,
        tariqt@...lanox.com, willemb@...gle.com
Subject: Re: [PATCH net-next] net/mlx4_en: avoid indirect call in TX
 completion



On 4/18/20 3:31 PM, David Miller wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> Date: Wed, 15 Apr 2020 09:46:52 -0700
> 
>> Commit 9ecc2d86171a ("net/mlx4_en: add xdp forwarding and data write support")
>> brought another indirect call in fast path.
>>
>> Use INDIRECT_CALL_2() helper to avoid the cost of the indirect call
>> when/if CONFIG_RETPOLINE=y
>>
>> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> 
> I've decided to apply this to 'net' and queue it up for -stable, thanks.
> 

SGTM, thanks David !