linux-kernel - Re: [PATCH] net: hsr: Setup and delete proxy prune timer only when RedBox is enabled

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Date: Wed, 15 May 2024 09:09:04 +0200
From: Lukasz Majewski <lukma@...x.de>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org, Paolo Abeni
 <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>, Vladimir Oltean
 <olteanv@...il.com>, "David S. Miller" <davem@...emloft.net>, Oleksij
 Rempel <o.rempel@...gutronix.de>, Tristram.Ha@...rochip.com, Ravi
 Gunasekaran <r-gunasekaran@...com>, Simon Horman <horms@...nel.org>, Nikita
 Zhandarovich <n.zhandarovich@...tech.ru>, Murali Karicheri
 <m-karicheri2@...com>, Arvid Brodin <Arvid.Brodin@...n.com>, Dan Carpenter
 <dan.carpenter@...aro.org>, "Ricardo B. Marliere" <ricardo@...liere.net>,
 Casper Andersson <casper.casan@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: hsr: Setup and delete proxy prune timer only when
 RedBox is enabled

Hi Sebastian,

> On 2024-05-14 11:13:06 [+0200], Lukasz Majewski wrote:
> > The timer for removing entries in the ProxyNodeTable shall be only
> > active when the HSR driver works as RedBox (HSR-SAN).
> > 
> > Moreover, the obsolete del_timer_sync() is replaced with
> > timer_delete_sync().
> > 
> > This patch improves fix from commit 3c668cef61ad
> > ("net: hsr: init prune_proxy_timer sooner") as the prune node
> > timer shall be setup only when HSR RedBox is supported in the node.
> >  
> 
> Is it problematic to init/ delete the timer in non-redbox mode? It
> looks easier and it is not a hotpath.

My concern is only with resource allocation - when RedBox is not
enabled the resources for this particular, not used timer are allocated
anyway.

If this can be omitted - then we can drop the patch.

> 
> > Signed-off-by: Lukasz Majewski <lukma@...x.de>  
> 
> Sebastian

Best regards,

Lukasz Majewski

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