Hi All,
I have an simple-mind Systemtap interface that uses the Perfmon2 Kernel
API to access the counters. The user-space interface automatically loads
the appropriate perfmon module to get access to the performance
monitoring hardware when __pfm_create_context() is performed. When using
the kernel ABI the module does not automatically loaded. What is the
reasoning for this difference in behavior?
If the Perfmon2 KAPI is not available, what are people thoughts on being
able to set up and read the performance counters within the kernel? What
about being ability for the kernel to monitor itself?
-Will
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