linux-kernel - Re: nohz fail (was: perf related boot hang.)

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Message-ID: <20140902134139.GA6579@redhat.com>
Date:	Tue, 2 Sep 2014 09:41:39 -0400
From:	Dave Jones <davej@...hat.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Catalin Iacob <iacobcatalin@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: nohz fail (was: perf related boot hang.)

On Mon, Sep 01, 2014 at 10:14:31PM +0200, Frederic Weisbecker wrote:
 > On Fri, Aug 22, 2014 at 10:00:09AM -0400, Dave Jones wrote:
 > > On Fri, Aug 22, 2014 at 08:01:48AM +0200, Catalin Iacob wrote:
 > >  > On Thu, Aug 21, 2014 at 4:56 PM, Frederic Weisbecker <fweisbec@...il.com> wrote:
 > >  > > Can you please test the series I just posted: "[RFC PATCH 0/9] nohz:
 > >  > > Nohz full kick fixes"?
 > >  > 
 > >  > Before applying the series I tried one more Firefox build which
 > >  > triggered the panic after less than 5 minutes.
 > >  > 
 > >  > After applying the series I did 2 full builds (around 60 minutes in
 > >  > total) with no problem.
 > > 
 > > Seems to be working fine here too after fuzzing for 17 hours so far.
 > 
 > Thanks a lot for testing this guys!
 > 
 > I'll send "nohz: Restore NMI safe local irq work for local nohz kick"
 > as a fix for 3.17 and the rest will have to wait for 3.18 as it's a complicated
 > fix for a long standing bug.
 > 
 > Can I apply your Tested-by from you both?

Sure, I haven't seen any recurrance of this since applying your patches.

	Dave


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