netdev - Re: [PATCH v8 net-next 3/5] netns-ipv4: reorganize netns

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Message-ID: <CANn89i+FtEQbT0ADuNVTdr=zqx6HdQKKXp-W0CCJ=ykxxGQ02A@mail.gmail.com>
Date: Thu, 30 Nov 2023 11:48:02 +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 v8 net-next 3/5] netns-ipv4: reorganize netns_ipv4 fast
 path variables

On Wed, Nov 29, 2023 at 8:28 AM Coco Li <lixiaoyan@...gle.com> wrote:
>
> Reorganize fast path variables on tx-txrx-rx order.
> Fastpath cacheline ends after sysctl_tcp_rmem.
> There are only read-only variables here. (write is on the control path
> and not considered in this case)
>
> Below data generated with pahole on x86 architecture.
> Fast path variables span cache lines before change: 4
> Fast path variables span cache lines after change: 2
>
> Suggested-by: Eric Dumazet <edumazet@...gle.com>
> Reviewed-by: Wei Wang <weiwan@...gle.com>
> Reviewed-by: David Ahern <dsahern@...nel.org>
> Signed-off-by: Coco Li <lixiaoyan@...gle.com>
> ---
>

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