Subject: Re: [PATCH bpf-next V2] bpf/xdp: optimize bpf_xdp_pointer to avoid reading sinfo

From: [email-masked]
Date: Mon, 05 Jun 2023 20:50:20 +0000

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <[email-masked]>:

On Thu, 01 Jun 2023 18:21:54 +0200 you wrote:
> Currently we observed a significant performance degradation in
> samples/bpf xdp1 and xdp2, due XDP multibuffer "xdp.frags" handling,
> added in commit 772251742262 ("samples/bpf: fixup some tools to be able
> to support xdp multibuffer").
> 
> This patch reduce the overhead by avoiding to read/load shared_info
> (sinfo) memory area, when XDP packet don't have any frags. This improves
> performance because sinfo is located in another cacheline.
> 
> [...]

Here is the summary with links:
  - [bpf-next,V2] bpf/xdp: optimize bpf_xdp_pointer to avoid reading sinfo
    https://git.kernel.org/bpf/bpf-next/c/411486626e57

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html