From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937818Ab0CPLKl (ORCPT ); Tue, 16 Mar 2010 07:10:41 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57608 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S937777Ab0CPLKj (ORCPT ); Tue, 16 Mar 2010 07:10:39 -0400 Message-ID: <4B9F671D.5060001@redhat.com> Date: Tue, 16 Mar 2010 13:10:21 +0200 From: Avi Kivity User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.8) Gecko/20100301 Fedora/3.0.3-1.fc12 Thunderbird/3.0.3 MIME-Version: 1.0 To: Ingo Molnar CC: "Zhang, Yanmin" , Peter Zijlstra , Sheng Yang , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Marcelo Tosatti , oerg Roedel , Jes Sorensen , Gleb Natapov , Zachary Amsden , ziteng.huang@intel.com Subject: Re: [PATCH] Enhance perf to collect KVM guest os statistics from host side References: <1268717232.2813.36.camel@localhost> <4B9F19F7.6000309@redhat.com> <20100316072449.GB11881@elte.hu> <4B9F4D74.4090403@redhat.com> <20100316095336.GI7961@elte.hu> <4B9F59DE.1060008@redhat.com> <20100316102052.GC10069@elte.hu> <4B9F603B.4080004@redhat.com> <20100316105021.GA14344@elte.hu> In-Reply-To: <20100316105021.GA14344@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/16/2010 12:50 PM, Ingo Molnar wrote: > >> I'm confused - initrd seems to be guest-side. I was talking about the host >> side. >> > host side doesnt need much support - just some client capability in perf > itself. I suspect vmchannels are sufficiently flexible and configuration-free > for such purposes? (i.e. like a filesystem in essence) > I haven't followed vmchannel closely, but I think it is. vmchannel is terminated in qemu on the host side, not in the host kernel. So perf would need to connect to qemu. -- error compiling committee.c: too many arguments to function