Message-ID: <4F3931D6.2090305@gmail.com>
Date: Mon, 13 Feb 2012 08:52:54 -0700
From: David Ahern <dsahern@gmail.com>
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To: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
CC: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>,
        Ingo Molnar <mingo@elte.hu>,
        Arnaldo Carvalho de Melo <acme@infradead.org>,
        LKML <linux-kernel@vger.kernel.org>, KVM <kvm@vger.kernel.org>
Subject: Re: [PATCH 3/3] KVM: perf: kvm events analysis tool
References: <j8pru203h6n22hdd9bryyyfr.1329110982240@email.android.com> <4F38E091.5070504@linux.vnet.ibm.com>
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On 02/13/2012 03:06 AM, Xiao Guangrong wrote:
> On 02/13/2012 01:32 PM, David Ahern wrote:
> 
>> [sorry for the top post - you would think Android would have a better mail client]
>>
>> If the first patch is needed then kvm-events will not work with older, unpatched kernels. That's a big limitation from a perf perpective.
>>
> 
> 
> The first patch is only needed for code compilation, after kvm-events is
> compiled, you can analyse any kernels. :)

understood.

Now that I recall perf's way of handling out of tree builds, a couple of
comments:

1. you need to add the following to tools/perf/MANIFEST
arch/x86/include/asm/svm.h
arch/x86/include/asm/vmx.h
arch/x86/include/asm/kvm_host.h

2.scripts/checkpatch.pl is an unhappy camper.

I'll take a look at the code and try out the command when I get some time.

David
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