linux-kernel - Re: [PATCH net-next] net/mlx5e: Reuse per-RQ XDP buffer to avoid stack zeroing overhead

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Message-Id: 
 <174743583575.4084431.15931290887900865187.git-patchwork-notify@kernel.org>
Date: Fri, 16 May 2025 22:50:35 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Tariq Toukan <tariqt@...dia.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 edumazet@...gle.com, andrew+netdev@...n.ch, saeedm@...dia.com,
 leon@...nel.org, ast@...nel.org, daniel@...earbox.net, hawk@...nel.org,
 john.fastabend@...il.com, netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
 linux-kernel@...r.kernel.org, bpf@...r.kernel.org, moshe@...dia.com,
 mbloch@...dia.com, gal@...dia.com, cjubran@...dia.com
Subject: Re: [PATCH net-next] net/mlx5e: Reuse per-RQ XDP buffer to avoid stack
 zeroing overhead

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Wed, 14 May 2025 23:03:52 +0300 you wrote:
> From: Carolina Jubran <cjubran@...dia.com>
> 
> CONFIG_INIT_STACK_ALL_ZERO introduces a performance cost by
> zero-initializing all stack variables on function entry. The mlx5 XDP
> RX path previously allocated a struct mlx5e_xdp_buff on the stack per
> received CQE, resulting in measurable performance degradation under
> this config.
> 
> [...]

Here is the summary with links:
  - [net-next] net/mlx5e: Reuse per-RQ XDP buffer to avoid stack zeroing overhead
    https://git.kernel.org/netdev/net-next/c/b66b76a82c88

You are awesome, thank you!
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