Headers for whitelisted kernel functions available to BPF programs

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Hi,

I understand that helper functions available to bpf programs are
listed in include/uapi/linux/bpf.h and kernel headers can be made
available at /sys/kernel/kheaders.tar.xz with CONFIG_IKHEADERS.  But
with the support of calling kernel functions from bpf programs, how
would one know which functions are whitelisted?  Are the headers for
these whitelisted functions available via something like "bpftool btf
dump file /sys/kernel/btf/vmlinux format c"?

Regards,
Kenny



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