Subject: Re: [patch 1/5] powerpc: fix for OProfile callgraph for Power 64 bit user apps

From: Michael Ellerman <[email-masked]>
Date: Tue, 10 Jun 2008 10:30:02 +1000

On Tue, 2008-06-10 at 09:41 +1000, Benjamin Herrenschmidt wrote:
> On Mon, 2008-06-09 at 16:26 -0700, [email-masked] wrote:
> > From: Carl Love <[email-masked]>
> > 
> > Fix the 64 bit user code backtrace which currently may hang the system.
> > 
> > Signed-off-by: Carl Love <[email-masked]>
> > Cc: Maynard Johnson <[email-masked]>
> 
> That looks weird. I doubt it's the right fix for the problem. Paul,
> I remember this was discussed earlier, did we come up with a proper fix
> already ?

We decided there probably wasn't a bug there at all:

http://ozlabs.org/pipermail/linuxppc-dev/2008-May/056449.html

Haven't heard from Carl if he reproduced the hang and traced it to
something else.

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person