netdev - Re: [PATCH bpf] xsk: do not sleep in poll() when need

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Date:   Tue, 14 Dec 2021 14:30:09 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Magnus Karlsson <magnus.karlsson@...il.com>
Cc:     magnus.karlsson@...el.com, bjorn@...nel.org, ast@...nel.org,
        daniel@...earbox.net, netdev@...r.kernel.org,
        maciej.fijalkowski@...el.com, jonathan.lemon@...il.com,
        bpf@...r.kernel.org, keith.wiles@...el.com
Subject: Re: [PATCH bpf] xsk: do not sleep in poll() when need_wakeup set

Hello:

This patch was applied to bpf/bpf.git (master)
by Daniel Borkmann <daniel@...earbox.net>:

On Tue, 14 Dec 2021 11:26:07 +0100 you wrote:
> From: Magnus Karlsson <magnus.karlsson@...el.com>
> 
> Do not sleep in poll() when the need_wakeup flag is set. When this
> flag is set, the application needs to explicitly wake up the driver
> with a syscall (poll, recvmsg, sendmsg, etc.) to guarantee that Rx
> and/or Tx processing will be processed promptly. But the current code
> in poll(), sleeps first then wakes up the driver. This means that no
> driver processing will occur (baring any interrupts) until the timeout
> has expired.
> 
> [...]

Here is the summary with links:
  - [bpf] xsk: do not sleep in poll() when need_wakeup set
    https://git.kernel.org/bpf/bpf/c/bd0687c18e63

You are awesome, thank you!
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