call graph problem

[Li Z. <xm...@ya...>]

Hi, 
I have a problem with call graph. I installed the
latest Oprofile on a Linux 2.6 kernel (with all the
patches). The call graph I got only have "one level"
like the following:
self  %  child  %  image name  app name      symbol
name
5  3.5e-04  0   0  vmlinux     vmlinux   unlock_page
-----------------------------------------------------
4  2.8e-04  0   0  vmlinux     vmlinux  
add_to_page_cache
-----------------------------------------------------
...
Every section has only one line.
Did I miss something?
Thanks for your help. 


		
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