elf: try to use perf_event_open syscall to create kprobe/uprobes #277
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The solution is ported from bcc/src/cc/libbpf.c:bpf_try_perf_event_open_with_probe
> Kernel API with e12f03d ("perf/core: Implement the 'perf_kprobe' PMU") allows
> creating [k,u]probe with perf_event_open, which makes it easier to clean up
> the [k,u]probe. This function tries to create pfd with the perf_kprobe PMU.
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The solution is ported from bcc/src/cc/libbpf.c:bpf_try_perf_event_open_with_probe