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M55 PMU cycle counter returning 0.

Hey community,

I'm new to this processor configuration task. I'm currently trying to measure the number of cpu cycles taken by arm cortex-m55 for executing a code. I took CMSIS-6 implementation: CMSIS_6/CMSIS/Documentation/Doxygen/Core/src/ref_pmu8.txt at 8c4dc58928b3347f6aa98b6fb2bf6770f32a72b7 · ARM-software/CMSIS_6 · GitHub as a reference for my task.

The code has been compiled without any errors/warnings. But after execution, the cycle counter is returning 0. For debugging purpose I checked tarmac log file, and I can see that the addresses are being accessed as expected. What's the way to debug the issue?

Thank you.