netdev - Re: [PATCH net] net/sched: fq_pie: avoid stalls in fq_pie

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Message-Id: 
 <169347482745.21305.4489281873039852777.git-patchwork-notify@kernel.org>
Date: Thu, 31 Aug 2023 09:40:27 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Eric Dumazet <edumazet@...gle.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com, jhs@...atatu.com,
 xiyou.wangcong@...il.com, jiri@...nulli.us, netdev@...r.kernel.org,
 eric.dumazet@...il.com, syzbot+e46fbd5289363464bc13@...kaller.appspotmail.com
Subject: Re: [PATCH net] net/sched: fq_pie: avoid stalls in fq_pie_timer()

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@...hat.com>:

On Tue, 29 Aug 2023 12:35:41 +0000 you wrote:
> When setting a high number of flows (limit being 65536),
> fq_pie_timer() is currently using too much time as syzbot reported.
> 
> Add logic to yield the cpu every 2048 flows (less than 150 usec
> on debug kernels).
> It should also help by not blocking qdisc fast paths for too long.
> Worst case (65536 flows) would need 31 jiffies for a complete scan.
> 
> [...]

Here is the summary with links:
  - [net] net/sched: fq_pie: avoid stalls in fq_pie_timer()
    https://git.kernel.org/netdev/net/c/8c21ab1bae94

You are awesome, thank you!
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