netdev - Re: [patch (testing)] Re: 2.6.20->2.6.21 - networking dies after random time

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Message-ID: <20070810090318.GG1764@ff.dom.local>
Date:	Fri, 10 Aug 2007 11:03:18 +0200
From:	Jarek Poplawski <jarkao2@...pl>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Jean-Baptiste Vignaud <vignaud@...dmail.fr>,
	"marcin\.slusarz" <marcin.slusarz@...il.com>,
	tglx <tglx@...utronix.de>,
	torvalds <torvalds@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	shemminger <shemminger@...ux-foundation.org>,
	linux-net <linux-net@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>,
	akpm <akpm@...ux-foundation.org>, alan <alan@...rguk.ukuu.org.uk>
Subject: Re: [patch (testing)] Re: 2.6.20->2.6.21 - networking dies after random time

On Fri, Aug 10, 2007 at 10:48:41AM +0200, Ingo Molnar wrote:
> 
> * Jarek Poplawski <jarkao2@...pl> wrote:
> 
> > On Fri, Aug 10, 2007 at 10:15:53AM +0200, Jean-Baptiste Vignaud wrote:
> > ...
> > > I was still testing on -rc2:
> > > Subject: [patch] genirq: temporary fix for level-triggered IRQ resend
> > > Date: Wed, 8 Aug 2007 13:00:37 +0200
> > > 
> > > For me after 1day 20hours, the network is still up, with more than 
> > > 1To of network traffic. HZ was 1000, i restart with HZ=100.
> > 
> > For me it's enough too but Thomas seems to doubt.
> 
> seem to doubt what? That rc2 fixes the symptom? That is a sure thing, 
> and we never doubted that. I think you might have misunderstood what 
> Thomas said and meant, so please just state your opinion unambiguously 
> so that we can fix any mis-communication :)
> 
> 	Ingo
> 


On 25-07-2007 02:19, Thomas Gleixner wrote:
...
> Actually we only need the resend for edge type interrupts. Level type
> interrupts come back once enable_irq() re-enables the interrupt line.
>

On 10-08-2007 10:05, Thomas Gleixner wrote:
...
> But suppressing the resend is not fixing the driver problem. The problem
> can show up with spurious interrupts and with interrupts on a shared PCI
> interrupt line at any time. It just might take weeks instead of minutes.

Maybe I miss something but it's not the same!

So, should Jean-Baptiste or Marcin test this for weeks or it's enough?

Jarek P.
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