linux-kernel - Re: [PATCH v2] neighbour: Don't let neigh_forced

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Message-Id: <170203262380.21119.9612861289100953455.git-patchwork-notify@kernel.org>
Date:   Fri, 08 Dec 2023 10:50:23 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Judy Hsiao <judyhsiao@...omium.org>
Cc:     edumazet@...gle.com, dsahern@...nel.org, horms@...nel.org,
        dianders@...omium.org, haleyb.dev@...il.com, davem@...emloft.net,
        kuba@...nel.org, joel.granados@...il.com, ja@....bg,
        leon@...nel.org, pabeni@...hat.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2] neighbour: Don't let neigh_forced_gc() disable preemption
 for long

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@...emloft.net>:

On Wed,  6 Dec 2023 03:38:33 +0000 you wrote:
> We are seeing cases where neigh_cleanup_and_release() is called by
> neigh_forced_gc() many times in a row with preemption turned off.
> When running on a low powered CPU at a low CPU frequency, this has
> been measured to keep preemption off for ~10 ms. That's not great on a
> system with HZ=1000 which expects tasks to be able to schedule in
> with ~1ms latency.
> 
> [...]

Here is the summary with links:
  - [v2] neighbour: Don't let neigh_forced_gc() disable preemption for long
    https://git.kernel.org/netdev/net/c/e5dc5afff62f

You are awesome, thank you!
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