Use PERF_EVENT_ARRAY instead of BPF_QUEUE for old kernels #4
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BPF_QUEUE is available only for kernel >= 4.20, however I am still facing triage task for 4.19.
In this PR I also introduced
BpfObjectsinterface to hide the bpf implementation details and user doesn't need to know which output mechanism is used.What's more, using perf buffer can also lift max payload size limit.
Actually I have some followup to do:
But not now, let's merge this for the interest of kernel 419.