netdev - Re: [PATCH v1 net-next 1/2] net-device: reorganize net

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Date: Mon, 4 Dec 2023 21:30:41 +0100
From: Eric Dumazet <edumazet@...gle.com>
To: Coco Li <lixiaoyan@...gle.com>
Cc: Jakub Kicinski <kuba@...nel.org>, Neal Cardwell <ncardwell@...gle.com>, 
	Mubashir Adnan Qureshi <mubashirq@...gle.com>, Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>, 
	Jonathan Corbet <corbet@....net>, David Ahern <dsahern@...nel.org>, 
	Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org, Chao Wu <wwchao@...gle.com>, 
	Wei Wang <weiwan@...gle.com>, Pradeep Nemavat <pnemavat@...gle.com>
Subject: Re: [PATCH v1 net-next 1/2] net-device: reorganize net_device fast
 path variables

On Mon, Dec 4, 2023 at 9:12 PM Coco Li <lixiaoyan@...gle.com> wrote:
>
> Reorganize fast path variables on tx-txrx-rx order
> Fastpath variables end after npinfo.
>
> Below data generated with pahole on x86 architecture.
>
> Fast path variables span cache lines before change: 12
> Fast path variables span cache lines after change: 4
>
> Suggested-by: Eric Dumazet <edumazet@...gle.com>
> Signed-off-by: Coco Li <lixiaoyan@...gle.com>

Reviewed-by: Eric Dumazet <edumazet@...gle.com>