Here are the answers of your question=>
1.My machine is DELL OPTIPLEX 990 MODEL which has INTEL i5 processor, 4GB RAM, 500 GB HDD with windows 7 original installed.
2. I have installed ubuntu 12.04 on my system and updated kernel from 3.2.0 to 3.8.5 by compiling from source code to include lock stat, oprofile support.
3. I have download oprofile from it's site and installed from there.
4. oprofile version---0.9.8
5. I am using operf as opcontrol is not properly working --it is showing it is old , operf is recommended
6.I am able to get user space data correctly, it is annotating my source file.
7. when I am using opreport it is showing around 90% of samples belong to vmlinux but I am able to get details of vmlinux like in which functions of kernel it is taking time.
When I am trying to profile kernel using following command in Oprofile i am getting following error,
opreport --symbols /lib/modules/`uname -r`
error: no sample files found: profile specification too strict
If possible please try to help as much as possible.