Perf doesn't support coresight or it doesn't read the PMU registers on Pandaboard Rev.A2

[Vanni Genua]

Hi there,
I'm testing a Pandaboard (OMAP4430, ARMv7) with Linux kernel 3.0.27-rt46
installed on it.
The following instruction is not working due to unsupported cache-misses
event.
#perf stat -e cache-misses echo "Hello"
Performance counter stats for 'echo "Hello"
':


   <not supported>
cache-misses


       0.007507575 seconds time elapsed

How to solve this problem?
Is there any patch for Perf o Linux kernel?
Thank you.
Best regards.
Vanni Genua
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