linux-kernel - Re: Regression: ppc powerstation boot hang caused by slab initialisation code

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Message-Id: <1245719440.17035.41.camel@mulgrave.site>
Date:	Mon, 22 Jun 2009 20:10:40 -0500
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: Regression: ppc powerstation boot hang caused by slab
 initialisation code

On Tue, 2009-06-23 at 10:32 +1000, Benjamin Herrenschmidt wrote:
> On Mon, 2009-06-22 at 18:21 -0500, James Bottomley wrote:
> > On Tue, 2009-06-23 at 08:51 +1000, Benjamin Herrenschmidt wrote:
> > > Ah, I notice you use SLAB, that's the second report of hangs with it due to
> > > the changes. You can try SLUB while I'm looking, might help.
> > 
> > Yes, switching to slub fixes it ... although given that the identified
> > problem commit is a slab one, that's understandable ...
> 
> Patch on its way (separate thread).

Got it .. just compiling now; changing the allocator seems to require a
rebuild of about every file.

>  BTW. Any reason why you don't have
> IRQSTACKs ? We really need to make that not an option....

That would probably be because I got it from the original debian OS, I
think.  I tend to use OS provided .configs as the basis for my changes.

James

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