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

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Date:	Wed, 23 Sep 2009 15:58:29 +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 02:31 PM, Mike Galbraith wrote:
>
> You can't annotate module symbols without -m.  If you don't provide -k,
> annotate will look for vmlinux in cwd.  If there's one there, it'll
> silently parse it.  For a module symbol, no -m means no symbol.
>
> marge:/root/tmp # perf annotate -v -v -m ext3_mark_iloc_dirty 2>&1| grep ext3_mark_iloc_dirty
> new symbol: ffffffffa005f8cf [0000dead]: ext3_mark_iloc_dirty   [ext3], hist: (nil), obj_start: (nil)
>   ffffffffa005f8cf-ffffffffa005fc20 ext3_mark_iloc_dirty [ext3]
>   Error: symbol 'ext3_mark_iloc_dirty' not present amongst the samples.
>
> With -k -m it works here.
>
>    


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.

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

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