linux-kernel - Re: [patch] Re: [perf] Finding uninstalled modules Was Re: mailing list for trace users

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Message-ID: <4ABA1E3B.40800@redhat.com>
Date:	Wed, 23 Sep 2009 16:10:19 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Mike Galbraith <efault@....de>
CC:	Arnaldo Carvalho de Melo <acme@...hat.com>, rostedt@...dmis.org,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Masami Hiramatsu <mhiramat@...hat.com>
Subject: Re: [patch] Re: [perf] Finding uninstalled modules Was Re: mailing
 list for trace users

On 09/23/2009 03:58 PM, Avi Kivity wrote:On 09/23/2009 03:58 PM, Avi 
Kivity wrote:
> Not for me.  'perf report', for example, shows
>
>     63.08%  qemu-system-x86  
> [kernel]                                              [k] packet_exit
>      4.71%  qemu-system-x86  
> [kernel]                                              [k] hpet_next_event
>      4.38%             init  
> [kernel]                                              [k] 
> mwait_idle_with_hints
>
> While 'perf top' still shows vmx_vcpu_run.
>

strace says:

    getcwd("/home/avi/kvm/linux-2.6"..., 4096) = 24
    ...
    [no chdir]
    ...
    open("kernel/arch/x86/kvm/kvm-intel.ko", O_RDONLY) = -1 ENOENT (No 
such file or directory)

That "kernel/" looks like it was meant for /lib/modules, not a kernel 
tree.  If I run 'perf report' from /lib/modules/2.6.31 I see vmx_vcpu_run.

-- 
error compiling committee.c: too many arguments to function

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