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

From: Avi Kivity <avi@redhat.com>
To: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>,
	rostedt@goodmis.org, LKML <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@elte.hu>,
	Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Masami Hiramatsu <mhiramat@redhat.com>
Subject: Re: [patch] Re: [perf] Finding uninstalled modules Was Re: mailing list for trace users
Date: Wed, 23 Sep 2009 15:58:29 +0300	[thread overview]
Message-ID: <4ABA1B75.7040900@redhat.com> (raw)
In-Reply-To: <1253705515.7835.41.camel@marge.simson.net>

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