linux-kernel - Re: [PATCH V5 1/3] perf & kvm: Enhance perf to collect KVM guest os statistics from host side

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Date:	Mon, 19 Apr 2010 17:22:21 +0800
From:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Sheng Yang <sheng@...ux.intel.com>,
	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Marcelo Tosatti <mtosatti@...hat.com>,
	oerg Roedel <joro@...tes.org>,
	Jes Sorensen <Jes.Sorensen@...hat.com>,
	Gleb Natapov <gleb@...hat.com>,
	Zachary Amsden <zamsden@...hat.com>, zhiteng.huang@...el.com,
	tim.c.chen@...el.com, Arnaldo Carvalho de Melo <acme@...radead.org>
Subject: Re: [PATCH V5 1/3] perf & kvm: Enhance perf to collect KVM guest
 os statistics from host side

On Mon, 2010-04-19 at 11:59 +0300, Avi Kivity wrote:
> On 04/19/2010 11:55 AM, Zhang, Yanmin wrote:
> > On Mon, 2010-04-19 at 11:37 +0300, Avi Kivity wrote:
> >    
> >> On 04/19/2010 08:32 AM, Zhang, Yanmin wrote:
> >>      
> >>> Below patch introduces perf_guest_info_callbacks and related register/unregister
> >>> functions. Add more PERF_RECORD_MISC_XXX bits meaning guest kernel and guest user
> >>> space.
> >>>
> >>>        
> >> This doesn't apply against upstream.
> >>      
> > What does upstream mean here? The vanilla 2.6.34-rc4?
> >    
> 
> Yes, sorry for being unclear.
> 
> >>    What branch was this generated
> >> against?
> >>
> >>      
> > It's against the latest tip/master. I checked out to 19b26586090 as the latest
> > tip/master has some updates on perf.
> >    
> 
> I don't want to merge tip/master... does tip/perf/core contain the 
> needed updates?
I think so. A moment ago, I checked out to b5a80b7e9 of tip/perf/core. All 3
patches could be applied cleanly and compilation is ok. A quick testing shows
tip/perf/core kernel does work.


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