linux-kernel - Re: Oprofile Regression Caused by commit e5d1367f17ba6a6fed5fd8b74e4d5720923e0c25 on PPC

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Message-ID: <1318949002.21167.20.camel@twins>
Date:	Tue, 18 Oct 2011 16:43:22 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Eric B Munson <emunson@...bm.net>
Cc:	Stephane Eranian <eranian@...gle.com>, mingo@...e.hu,
	anton@...ba.org, linux-kernel@...r.kernel.org, paulus@...ba.org,
	hbabu@...ibm.com
Subject: Re: Oprofile Regression Caused by commit
 e5d1367f17ba6a6fed5fd8b74e4d5720923e0c25 on PPC

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.
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