RE: [Xen-devel] xenoprof missing xen symbols on x86_64 dom0

["Santos, Jose Renato G" <joserenato.santos@xxxxxx>]

  This problem usually happens when oprofile is using a kernel image that does 
not correspond to the running kernel.
  Make sure you are specifying the right kernel image on the opcontrol command.
  Oprofile keeps previously used kernel images under the directory 
/root/.oprofile (assuming your are logged in as root).
  Sometimes this may have an old kernel which may not correspond to the current 
kernel and may be mistakenly used by oprofile.
  Try removing this directory and then run oprofile specifying the right kernel 
image using option --vmlinux (use the non compressed version of the kernel 
image).
  That is all I can think of. I hopee this helps

  Renato
  

> -----Original Message-----
> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Mukil Kesavan
> Sent: Sunday, February 22, 2009 7:45 PM
> To: xen-devel@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-devel] xenoprof missing xen symbols on x86_64 dom0
> 
> Hello,
> 
> I followed the online guide to get xenoprof up and running 
> (http://www.xen.org/files/summit_3/xenoprof_tutorial.pdf). I 
> compiled the kernel with debugging symbols and patched up the 
> user tools.
> 
> The problem I'm facing now is that "opreport -l" doesn't pick 
> up symbols from the xen-syms file specified while starting 
> profiling. I get a whole lot of "xen-unknown" symbols. This 
> issue seems to be a affecting only reports from dom0; 
> strangely enough, I am able to get symbols from xen on the 
> domU report though. I'm running on an Intel Xeon E5320 with 
> Xen 3.3.2 pre-release (compiled from source). The version of 
> oprofile used is oprofile-0.9.3 and the xen patch applied is  
> oprofile-0.9.3-xen-r2.patch.
> 
> I know that this question has been asked recently by someone 
> else working with xen3.3 but there was no response to it. So, 
> reposting another one here. Please do respond.
> 
> Thanks,
> Mukil
> 
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