linux-kernel - Re: [GIT PULL] perf changes for v3.8

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Message-ID: <50CA28A1.2080003@gmail.com>
Date:	Thu, 13 Dec 2012 12:12:33 -0700
From:	David Ahern <dsahern@...il.com>
To:	Ingo Molnar <mingo@...nel.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] perf changes for v3.8

On 12/13/12 10:36 AM, Ingo Molnar wrote:
> The #1 problem child in this particular case, the one you should
> care about most is:
>
> 	perf record -e cycles:pp
>
> As 99% of the people won't be doing any host or guest side
> profiling, they just want to do profiling.

In older code (v3.6 and before) -e cycles:p sets the exclude_guest flag 
to 0, so -e cycles:p and -e cycles:pG are equivalent with respect to 
exclude_guest.


> Ok? So now we need a patch that does all that - otherwise we'll
> have to revert the one that added the regression.

I will not have time to work on a patch until Sunday at the earliest.

David
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