netdev - Re: [PATCH net-next 09/10] udp: make busylock per socket

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Message-ID: <81e969f3-2736-424f-9745-106a7a792b35@kernel.org>
Date: Wed, 17 Sep 2025 09:52:48 -0600
From: David Ahern <dsahern@...nel.org>
To: Eric Dumazet <edumazet@...gle.com>, "David S . Miller"
 <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>
Cc: Simon Horman <horms@...nel.org>, Willem de Bruijn <willemb@...gle.com>,
 Kuniyuki Iwashima <kuniyu@...gle.com>, netdev@...r.kernel.org,
 eric.dumazet@...il.com
Subject: Re: [PATCH net-next 09/10] udp: make busylock per socket

On 9/16/25 10:09 AM, Eric Dumazet wrote:
> While having all spinlocks packed into an array was a space saver,
> this also caused NUMA imbalance and hash collisions.
> 
> UDPv6 socket size becomes 1600 after this patch.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> ---
>  include/linux/udp.h |  1 +
>  include/net/udp.h   |  1 +
>  net/ipv4/udp.c      | 20 ++------------------
>  3 files changed, 4 insertions(+), 18 deletions(-)
> 

Reviewed-by: David Ahern <dsahern@...nel.org>