linux-kernel - Re: [BUG] Possible locking issues in stop

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Date:	Thu, 4 Dec 2014 09:58:53 -0600
From:	Alex Thorlton <athorlton@....com>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Alex Thorlton <athorlton@....com>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Fabian Frederick <fabf@...net.be>,
	Ingo Molnar <mingo@...nel.org>, Russ Anderson <rja@....com>
Subject: Re: [BUG] Possible locking issues in stop_machine code on 6k core
 machine

On Thu, Dec 04, 2014 at 12:34:04AM +0100, Thomas Gleixner wrote:
> first of all, could you please format your mail so it is actually
> readable and can be replied to?

My fault there - stupid mistake.

> If you would provide real data instead of half baken assumptions
> we might actually be able to help you.
> 
> There might be some hidden issue in the stomp machine crap, but surely
> not the one you described.

I'll return with some actual data so that others can get a better
picture of what we're seeing.  I'll also see if I can come up with a
way to reproduce the issue on a smaller configuration; might not be
possible, but attempting to do so might provide some more insight into
our problem.

Thanks for your detailed description of the code path!  I definitely
understand that our assumption can't be the actual problem here.  I'll
dig back into the issue and try to get some better information.

Thanks again!

- Alex
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