netdev - Re: freeze with interface rename & SIOCGIFNAME

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Message-ID: <1372180777.3301.109.camel@edumazet-glaptop>
Date:	Tue, 25 Jun 2013 10:19:37 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Nicolas Schichan <nschichan@...ebox.fr>
Cc:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
	Cong Wang <amwang@...hat.com>
Subject: Re: freeze with interface rename & SIOCGIFNAME

On Tue, 2013-06-25 at 19:12 +0200, Nicolas Schichan wrote:

> Am I right in thinking that the process spinning on SIOCGIFNAME should be 
> naturally be preempted by other tasks by the scheduler once its timeslice has 
> expired or am I missing something ?

It depends on CONFIG_PREEMPT settings.

If the kernel is not preemptable, we basically can loop forever, unless
we call cond_resched()




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