lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 27 May 2019 07:58:38 -0700
From:   Stephen Hemminger <>
To:     Yunsheng Lin <>
Cc:     <>, <>,
        <>, <>,
        <>, <>
Subject: Re: [PATCH net-next] net: link_watch: prevent starvation when
 processing linkwatch wq

On Mon, 27 May 2019 09:47:54 +0800
Yunsheng Lin <> wrote:

> When user has configured a large number of virtual netdev, such
> as 4K vlans, the carrier on/off operation of the real netdev
> will also cause it's virtual netdev's link state to be processed
> in linkwatch. Currently, the processing is done in a work queue,
> which may cause worker starvation problem for other work queue.
> This patch releases the cpu when link watch worker has processed
> a fixed number of netdev' link watch event, and schedule the
> work queue again when there is still link watch event remaining.
> Signed-off-by: Yunsheng Lin <>

Why not put link watch in its own workqueue so it is scheduled
separately from the system workqueue?

Powered by blists - more mailing lists