netdev - Re: [PATCH net-2.6] pkt_sched: gen

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Message-ID: <1275975562.2775.93.camel@edumazet-laptop>
Date:	Tue, 08 Jun 2010 07:39:22 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Changli Gao <xiaosuo@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Stephen Hemminger <shemminger@...tta.com>,
	Jarek Poplawski <jarkao2@...il.com>,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [PATCH net-2.6] pkt_sched: gen_estimator: add a new lock

Le mardi 08 juin 2010 à 13:20 +0800, Changli Gao a écrit :

> IMO, this bug should be fixed by adding rtnl_lock to xt_RATEEST.c.
> Killing rtnl should be done in separated patches. They are different
> things. Your patch introduces another locks, and it is extra overhead
> for other users.
> 

extra overhead, in new/kill estimators ? 

Are you kidding ?

RTNL is taken, taking an extra-uncontended spinlock is free.

Nope, I wont add rtnl lock to xt_RATEEST.c

I believe you dont really understood what I patiently explained to you.

Thats becoming rediculous.



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