I think you should enable frame pointers in your kernel config.



-          Padma



From: oprofile-list-bounces@lists.sourceforge.net [mailto:oprofile-list-bounces@lists.sourceforge.net] On Behalf Of Wen shu Tang (wentang)
Sent: Thursday, November 16, 2006 4:45 PM
To: oprofile-list@lists.sourceforge.net
Subject: callgraph support on x86


Hi, I am fairly newbie to this. I am trying to profile kernel modules for optimization.


I am currently running on this system.

uname -a

Linux svbu-vm-host-1 2.6.9-42.ELsmp #1 SMP Wed Jul 12 23:27:17 EDT 2006 i686 i686 i386 GNU/Linux
My version of oprofile is 0.9.2

When trying to: opcontrol --callgraph=1

I get this error message: Call-graph profiling unsupported on this kernel/hardware


Everywhere I looked seems to indicate that I should be getting callgraph support. Is there something missing that I need to do in order to get callgraphs


Thank you for your help and time in advance.


Wen Shu Tang


Wen Shu Tang