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Date: Thu, 29 Feb 2024 17:37:51 +0100
From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Julian Anastasov <ja@ssi.bg>
Cc: Terin Stock <terin@cloudflare.com>, horms@verge.net.au,
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Subject: Re: [PATCH] ipvs: generic netlink multicast event group
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 <51c680c7-660a-329f-8c55-31b91c8357fd@ssi.bg>
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On Wed, Feb 07, 2024 at 06:44:48PM +0200, Julian Anastasov wrote:
[...]
> 	I also worry that such events slowdown the configuration
> process for setups with many rules which do not use listeners.
> Should we enable it with some sysctl var? Currently, many CPU cycles are 
> spent before we notice that there are no listeners.

There is netlink_has_listeners(), IIRC there was a bit of missing work
in genetlink to make this work?