Please document which kernel options are needed for procmon to work

I just installed procmon (from the source) and when I do sudo procmon I get:

  what():  filesystem error: directory iterator cannot open directory: No such file or directory [/sys/kernel/debug/tracing/events/syscalls]

So it looks like this needs some kernel options to use, it would be good to document that in README.md

EDIT: After enabling the needed kernel option and running procmon as root I get empty list (just the header and footer) and in the shell I see following errors:

bpf: Failed to load program: Invalid argument
fd 9 is not pointing to valid bpf_map
processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0

bpf: Failed to load program: Invalid argument
fd 9 is not pointing to valid bpf_map
processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0

So something is still missing, but what? (I have BPF enabled in kernel, but not sure if all the required options, or maybe I need some CLI tools?)

Start with README.md and the procmon setup instructions, then investigate the reported missing tracing directory and BPF load errors on a supported Linux system. Document the required kernel options and any other prerequisites, and verify that running procmon as root no longer produces the reported setup errors.