linux-kernel - Re: [PATCH 1/2] perf, x86: Revamp PEBS event selection

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Message-ID: <20140702154307.GM19379@twins.programming.kicks-ass.net>
Date:	Wed, 2 Jul 2014 17:43:07 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Andi Kleen <andi@...stfloor.org>, eranian@...gle.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] perf, x86: Revamp PEBS event selection

On Wed, Jul 02, 2014 at 08:34:07AM -0700, Andi Kleen wrote:
> On Wed, Jul 02, 2014 at 02:29:02PM +0200, Peter Zijlstra wrote:
> > On Fri, Jun 27, 2014 at 04:10:11PM -0700, Andi Kleen wrote:
> > > From: Andi Kleen <ak@...ux.intel.com>
> > > 
> > > As already discussed earlier in email.
> > 
> > Is an entirely inappropriate start for a Changelog. Do not assume prior
> > knowledge. If its relevant include it here without reference.
> 
> Thanks. Do you have any other comments?

What Stephane said ;-)

But also, I think we should conditionally allow the filter bits;
possibly with a sysfs file like I had.

Back when we had to sort that SNB cycles thing it was tedious that Linus
could not just try things.

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