Re: Help in removing Oprofile

On 02/01/2017 12:17 PM, Shiva M wrote:
> Hi William,
> 
> Also, I have built Oprofile as part of rootfs. My linux version is 2.6.38, but Oprofile is not running on my target machine.
> 
> I see the following :
> modprobe: chdir(/lib/modules): No such file or directory
> Kernel doesn't support oprofile
> 
> I have enabled CONFIG_OPROFILE as part of .config, downloaded and built popt/, binutils/ and Oprofile. Built went successfully but opcontrol is not working. Can you please help what I am doing wrong.
> 
> Thanks,
> Shiva

Hi Shiva,

Which specific version of oprofile are you building? Newer versions of oprofile since 0.9.8 have used the kernels perf infrastructure to collect data.  Kernels sinces 2.6.32 have provided the perf systemcall.  Depending how your kernel is built it may or may not have the oprofile driver built.  I know that we disabled (kernel CONFIG_OPROFILE is not set for the kernel builds) in in more recent versions of Fedora because the newer versions of oprofile did not use it and opcontrol was removed.  One should be using operf instead to collect data.

-Will

> 
> 
> On Wed, Feb 1, 2017 at 10:34 PM, Shiva M <[email protected] <mailto:[email protected]>> wrote:
> 
>     Hi William,
> 
>     Thanks a ton for your response. I have found the cause of my issue, after adding -ldl to other packages, build went through fine.  I tried doing make uninstall to give a try to uninstall Oprofile and re-install but its not working. I have deleted Oprofile package directory after building, I downloaded again and tried make uninstall but that not worked.
> 
>     Thanks,
>     Shiva
> 
>     On Tue, Jan 31, 2017 at 10:07 PM, William Cohen <[email protected] <mailto:[email protected]>> wrote:
> 
>         On 01/31/2017 05:58 AM, Shiva M wrote:
>         > Hi All,
>         >
>         > I have build Oprofile from source on my system. Oprofile is workng fine. I have not specified any installation directory while building Oprofile, it installed to default directories.
>         >
>         >
>         > We have one ts/ package which was building fine before. Atter installign Oprofile on my system, I see
>         >
>         > [0m/usr/bin/ld: ../libscul.a(scul_sslcompat.c.o): undefined reference to symbol 'dlsym@@GLIBC_2.2.5'
>         >
>         > /lib/x86_64-linux-gnu/libdl.so.2: error adding symbols: DSO missing from command line
>         >
>         > collect2: ld returned 1 exit status
>         >
>         > make[2]: *** [source/scul/selftests/scul_asn1_test] Error 1
>         >
>         > make[1]: *** [source/scul/selftests/CMakeFiles/scul_asn1_test.dir/all] Error 2
>         >
>         > make: *** [all] Error 2
>         >
>         >
>         > Any help would be appreciated.
>         >
>         >
>         > I want to remove Oprofile and re-install on specific install directory
>         >
>         >
>         > Thanks,
>         >
>         > Shiva
> 
> 
>         Hi Shiva,
> 
>         It is unlikely that oprofile is causing the build with the other package.  Was there anything else changed in the sources or system?  OProfile does install some additional librarys, but it is unlikely to significantly affect libraries for other things.  If the software that is having this problem is in a git repository you might try to check out earlier versions and see if a specific patch is causing this problem.
> 
>         By default oprofile should install things in /usr/local/bin/ (o* commands), /usr/local/share/oprofile/, and /usr/local/lib/oprofile.  If you still have the oprofile build directory that installed them, then you should as root be able to the following as root to remove the oprofile installed files:
> 
>         make uninstall
> 
>         -Will
> 
> 
> 


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