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How to analyze critical function(in kernel module) that caused CPU-bound task by streamline?

Myles

We are going to analyze the CPU heavy task(in kernel module), but the streamling tool could not show the detail.

The problem is that the critical functions(caused CPU-bound task) executed in kernel module, and the streamline tool just showed the unknown code in XXX(XXX means the name of kernel module).

In addition, in streamling settings, we added vmlinux/XXX.ko/user space ELF image from the sheet "program image" -> "add ELF image".

Is there any steps missing? Please let us know in your free time. Thank you so much.

- Test environment
OS => aarch64 GNU/ Linux 4.9.38
HW => armv8 64 bit

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