netdev - Re: [PATCH net-next 0/3] UDP sock

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Date:   Sun, 01 May 2022 12:20:12 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Pavel Begunkov <asml.silence@...il.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, kuba@...nel.org,
        dsahern@...nel.org, edumazet@...gle.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 0/3] UDP sock_wfree optimisations

Hello:

This series was applied to netdev/net-next.git (master)
by David S. Miller <davem@...emloft.net>:

On Thu, 28 Apr 2022 11:58:16 +0100 you wrote:
> The series is not UDP specific but that the main beneficiary. 2/3 saves one
> atomic in sock_wfree() and on top 3/3 removes an extra barrier.
> Tested with UDP over dummy netdev, 2038491 -> 2099071 req/s (or around +3%).
> 
> note: in regards to 1/3, there is a "Should agree with poll..." comment
> that I don't completely get, and there is no git history to explain it.
> Though I can't see how it could rely on having the second check without
> racing with tasks woken by wake_up*().
> 
> [...]

Here is the summary with links:
  - [net-next,1/3] sock: dedup sock_def_write_space wmem_alloc checks
    https://git.kernel.org/netdev/net-next/c/14bfee9b6270
  - [net-next,2/3] sock: optimise UDP sock_wfree() refcounting
    https://git.kernel.org/netdev/net-next/c/052ada096842
  - [net-next,3/3] sock: optimise sock_def_write_space barriers
    https://git.kernel.org/netdev/net-next/c/0a8afd9f026a

You are awesome, thank you!
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