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List:       oprofile-list
Subject:    Re: [Patch 1/3] Cell BE SPU: configure, control, and doc
From:       John Levon <levon () movementarian ! org>
Date:       2007-04-30 14:59:07
Message-ID: 20070430150240.GB19516 () totally ! trollied ! org ! uk
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On Mon, Apr 30, 2007 at 08:56:25AM -0500, Maynard Johnson wrote:

> >+                       <note>Attempting to profile SPEs with kernel 
> >versions older than 2.6.22 may cause the
> >+                       system to crash.</note>
> >
> >This a kernel bug or something else?
> > 
> >
> Unfortunately, this was due to improper error handling in the Cell BE 
> PPU profiling support that was accepted into mainline 2.6.18.  We've 
> corrected this now in the current kernel code.  There's no way that I 
> know of for userspace code to query the kernel to get the true kernel 
> version.  If you (or anyone else) can suggest some kind of check we can 
> do, I'm open to ideas.

No, this is fine if it's a genuine kernel bug.

regards
john

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