linux-kernel - Re: [RFC] para virt interface of perf to support kvm guest os statistics collection in guest os

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Message-Id: <1276222303.2096.466.camel@ymzhang.sh.intel.com>
Date:	Fri, 11 Jun 2010 10:11:43 +0800
From:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Avi Kivity <avi@...hat.com>, LKML <linux-kernel@...r.kernel.org>,
	kvm@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Fr??d??ric Weisbecker <fweisbec@...il.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Cyrill Gorcunov <gorcunov@...il.com>,
	Lin Ming <ming.m.lin@...el.com>,
	Sheng Yang <sheng@...ux.intel.com>,
	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
Subject: Re: [RFC] para virt interface of perf to support kvm guest os
 statistics collection in guest os

On Thu, 2010-06-10 at 11:50 +0200, Peter Zijlstra wrote:
> On Thu, 2010-06-10 at 10:21 +0800, Zhang, Yanmin wrote:
> > . The ABI mostly includes the definition of struct perf_event_attr,
> > guest_perf_counter,
> > and hypercalls. 
> 
> Note that perf_event_attr isn't guaranteed to be stable between kernels,
> it can grow.
Thanks. I need create a small new attr structure to save some key data members.

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