netdev - Re: [PATCH net-next] net: pin system percpu page

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Date: Wed, 27 Mar 2024 04:09:34 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
 pabeni@...hat.com, lorenzo@...nel.org, toke@...hat.com,
 nex.sw.ncis.osdt.itp.upstreaming@...el.com, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net: pin system percpu page_pools to the
 corresponding NUMA nodes

Hello:

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

On Mon, 25 Mar 2024 17:06:35 +0100 you wrote:
> System page_pools are percpu and one instance can be used only on
> one CPU.
> %NUMA_NO_NODE is fine for allocating pages, as the PP core always
> allocates local pages in this case. But for the struct &page_pool
> itself, this node ID means they are allocated on the boot CPU,
> which may belong to a different node than the target CPU.
> Pin system page_pools to the corresponding nodes when creating,
> so that all the allocated data will always be local. Use
> cpu_to_mem() to account memless nodes.
> Nodes != 0 win some Kpps when testing with xdp-trafficgen.
> 
> [...]

Here is the summary with links:
  - [net-next] net: pin system percpu page_pools to the corresponding NUMA nodes
    https://git.kernel.org/netdev/net-next/c/341ee1a584c8

You are awesome, thank you!
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