netdev - Re: [PATCH net-next 10/10] udp: use skb_attempt_defer

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Message-ID: <willemdebruijn.kernel.1c9ea4473a835@gmail.com>
Date: Wed, 17 Sep 2025 11:03:53 -0400
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
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>, 
 David Ahern <dsahern@...nel.org>, 
 netdev@...r.kernel.org, 
 eric.dumazet@...il.com, 
 Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH net-next 10/10] udp: use skb_attempt_defer_free()

Eric Dumazet wrote:
> Move skb freeing from udp recvmsg() path to the cpu
> which allocated/received it, as TCP did in linux-5.17.
> 
> This increases max thoughput by 20% to 30%, depending
> on number of BH producers.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Acked-by: Willem de Bruijn <willemb@...gle.com>

LGTM. But I'm not the most familiar with this deferred free path and
its conditions.