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

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Message-ID: <4BD17B78.5080305@redhat.com>
Date:	Fri, 23 Apr 2010 13:50:32 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Liu Yu-B13201 <B13201@...escale.com>
CC:	"Zhang, Yanmin" <yanmin_zhang@...ux.intel.com>,
	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 04/22/2010 01:27 PM, Liu Yu-B13201 wrote:
>
> I met this error when built kernel. Anything wrong?
>
>    CC      init/main.o
> In file included from include/linux/ftrace_event.h:8,
>                   from include/trace/syscall.h:6,
>                   from include/linux/syscalls.h:75,
>                   from init/main.c:16:
> include/linux/perf_event.h: In function 'perf_register_guest_info_callbacks':
> include/linux/perf_event.h:1019: error: parameter name omitted
> include/linux/perf_event.h: In function 'perf_unregister_guest_info_callbacks':
> include/linux/perf_event.h:1021: error: parameter name omitted
> make[1]: *** [init/main.o] Error 1
> make: *** [init] Error 2
>    

I merged tip/perf/code which may fix this.  Find it in kvm.git next branch.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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