linux-kernel - Re: [stable] Soft lockups since stable kernel upgrade to 2.6.23.8

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Message-Id: <20071120.151538.68704351.davem@davemloft.net>
Date:	Tue, 20 Nov 2007 15:15:38 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mingo@...e.hu
Cc:	greg@...ah.com, jeremy@...p.org, gregkh@...e.de,
	linux-kernel@...r.kernel.org, stable@...nel.org,
	jkohen@...rs.sourceforge.net, akpm@...ux-foundation.org,
	david@...olicited.net
Subject: Re: [stable] Soft lockups since stable kernel upgrade to 2.6.23.8

From: Ingo Molnar <mingo@...e.hu>
Date: Tue, 20 Nov 2007 22:49:27 +0100

> 
> * Greg KH <greg@...ah.com> wrote:
> 
> > On Tue, Nov 20, 2007 at 09:39:19PM +0100, Ingo Molnar wrote:
> > > 
> > > * Greg KH <greg@...ah.com> wrote:
> > > 
> > > > > but we only have cpu_clock() from v2.6.23 onwards - so we should not 
> > > > > apply the original patch to v2.6.22. (we should not have applied 
> > > > > your patch that started the mess to begin with - but that's another 
> > > > > matter.)
> > > > 
> > > > Well, I can easily back that one out, if that is easier than adding 2 
> > > > more patches to try to fix up the mess here.
> > > > 
> > > > Let me know if you feel that would be best.
> > > 
> > > i'd leave it alone - doing that we have in essence the softlockup 
> > > detector turned off. Reverting to the older version might trigger false 
> > > positives that need the new stuff.
> > 
> > Ok, I'll see if the current round of patches fix up everyone 
> > complaints :)
> 
> so just to reiterate, to make sure we have the same plans: lets leave 
> v2.6.22 and earlier kernels alone - and lets strive for the latest 
> patches and code for v2.6.23 (and v2.6.24, evidently).

I've validated that those patches make 2.6.23 behave on my
Niagara box.

Thanks.
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