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Subject: Re: Oprofile Regression Caused by commit
 e5d1367f17ba6a6fed5fd8b74e4d5720923e0c25 on PPC
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Eric B Munson <emunson@mgebm.net>
Cc: Stephane Eranian <eranian@google.com>, mingo@elte.hu, anton@samba.org,
        linux-kernel@vger.kernel.org, paulus@samba.org, hbabu@us.ibm.com
Date: Tue, 18 Oct 2011 16:43:22 +0200
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On Tue, 2011-10-18 at 09:53 -0400, Eric B Munson wrote:
> On Wed, 12 Oct 2011, Stephane Eranian wrote:
> 
> > Could be:
> >    a8d757e perf events: Fix slow and broken cgroup context switch code
> > 
> 
> Thanks for the pointer, but the fix was in:
>     facc4307 perf: Optimize event scheduling locking
> 
> This might be a candidate for stable given that oprofile is broken without it.

I might feel much more confident about recommending that if someone
could explain why that patches fixes what exact problem.