Streamline doesn't show Linux kernel source in code section

Please look Streamline user gudie Section D.2 https://developer.arm.com/documentation/101816/9-7/Troubleshooting-Streamline/Troubleshooting-missing-source-files?lang=en to setup path substitutions to replace the path that Streamline uses to find the source code.

Hi KJ Yang, 

I'm Yahya from Streamline team.

Can you provide more details on the following:

• Which version of Streamline are you using?
• When you attach your userspace executable to the capture, does the function you mentioned appear in the code tab? 
• Did you enable "CONFIG_DEBUG_INFO" while building your kernel?
  • To know if it was enabled, you can run the following code on your target
    

    zcat /proc/config.gz | grep CONFIG_DEBUG_INFO

• Is path substitution icon () enabled? When you click on it, does it show the directory that contains your kernel code?

Kind Regards,
Yahya

The link you provided isn't working. If you mean the path substitution in the code view (the icon Yahya mentioned in the other reply), When I click on it I get an empty list shown below

Hello Yahya,

• I'm using Arm Streamline Performance Analyzer Version 9.6.1, Build 20250609_133608
• No, just the code for the userspace program appears in the code section but the kernel code doesn't show
• Yes CONFIG_DEBUG_INFO is enabled. I attached all the configurations I used to build kernel
• The path substitution icon is enabled and I get empty list when I click on it. the kernel directory is not on list

Thanks,
KJ Yang

config.txt

https://developer.arm.com/documentation/101816/9-7/Troubleshooting-Streamline/Troubleshooting-missing-source-files

Thanks for the link. As mentioned above, the path substitution list is empty so I can't follow the steps mentioned in documentation

Hi KJ Yang,

Thanks for the info you provided. The kernel configuration file you attached contains all the necessary configs.

I have another couple questions to ask:

• Can you specify the DWARF version of your vmlinux image?
  • To know that you can run the following code
    

    readelf --debug-dump=info vmlinux | grep "Version:" | tail -n 1

    
    
    
• When you right-click on the capture and choose Analyze, do you see the vmlinux image in the Program Images list?
  if yes, is the image detected as "Debug Info" image?
  • For reference, it should look something like that:
    

Kind Regards,
Yahya

Hi KJ,

Streamline tries to locate the path to your application's source by querying the DWARF debug information. If the path in the debug info is not accessible, you will need to provide a location for the source files using path substitution. Ronan has provided the link to the current version of the User Guide that shows how to do this.

Hi KJ,

You'll need to click the plus symbol "+" to create a new substitution rule.

Hi Yahya,

• From your command the version is 4 
• Yes, I can see the vmlinux image and it has debug ifno

Thanks,
KJ Yang

Hi KJ Yang,

The issue you have reported has been confirmed to be a bug and we are currently working on fixing it.

As a work around, you can overcome the issue by disabling the beta C++ processing backend by doing the following:

• Go to Window → Preferences and untick Use new C++ processing backend (beta).
• In your captures list, right-click the capture → Clean Analysis Result.
• Analyze your capture again as usual and the code tab should be working fine with Linux kernel source code
  • You might need to use Path Substitution as mentioned by other answers

Please let me know if you have any questions.

Thanks,
Yahya

Hi Yahya,

I tested your workaround and it's working. I can see the kernel code now.

Thanks a lot for your help