netdev - Re: [PATCH net-next] tcp: split tcp_check

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Message-Id: 
 <177026701757.165764.8982996972541300841.git-patchwork-notify@kernel.org>
Date: Thu, 05 Feb 2026 04:50:17 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Eric Dumazet <edumazet@...gle.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com, horms@...nel.org,
 ncardwell@...gle.com, kuniyu@...gle.com, netdev@...r.kernel.org,
 eric.dumazet@...il.com
Subject: Re: [PATCH net-next] tcp: split tcp_check_space() in two parts

Hello:

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

On Tue,  3 Feb 2026 05:09:32 +0000 you wrote:
> tcp_check_space() is fat and not inlined.
> 
> Move its slow path in (out of line) __tcp_check_space()
> and make tcp_check_space() an inline function for better TCP performance.
> 
> $ scripts/bloat-o-meter -t vmlinux.old vmlinux.new
> add/remove: 2/2 grow/shrink: 4/0 up/down: 708/-582 (126)
> Function                                     old     new   delta
> __tcp_check_space                              -     521    +521
> tcp_rcv_established                         1860    1916     +56
> tcp_rcv_state_process                       3342    3384     +42
> tcp_event_new_data_sent                      248     286     +38
> tcp_data_snd_check                            71     106     +35
> __pfx___tcp_check_space                        -      16     +16
> __pfx_tcp_check_space                         16       -     -16
> tcp_check_space                              566       -    -566
> Total: Before=24896373, After=24896499, chg +0.00%
> 
> [...]

Here is the summary with links:
  - [net-next] tcp: split tcp_check_space() in two parts
    https://git.kernel.org/netdev/net-next/c/309dd9942155

You are awesome, thank you!
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