netdev - Re: [PATCH 0/2] kobject: reduce uevent_sock

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Date: Wed, 14 Feb 2024 11:27:20 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Eric Dumazet <edumazet@...gle.com>
Cc: Christian Brauner <brauner@...nel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>, netdev@...r.kernel.org,
	"David S . Miller" <davem@...emloft.net>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH 0/2] kobject: reduce uevent_sock_mutex contention

On Wed, Feb 14, 2024 at 08:48:27AM +0000, Eric Dumazet wrote:
> This series reduces the (small ?) contention over uevent_sock_mutex,
> noticed when creating/deleting many network namespaces/devices.
> 
> 1) uevent_seqnum becomes an atomic64_t
> 
> 2) Only acquire uevent_sock_mutex whenever using uevent_sock_list

Cool, any boot-time measured speedups from this?  Or is this just tiny
optimizations that you noticed doing reviews?

thanks,

greg k-h