How to attach a single bpf_program multiple times?

[Shuyi Cheng <chengshuyi@xxxxxxxxxxxxxxxxx>]

Hi, everyone!

When the ebpf program is the same, but attach to a different kprobe 
function, I have to recompile the entire program. If the kprobe function 
of bpf_program attach can be specified dynamically, then there is no 
need to modify the original program.

Thanks!