libxdp with bpf_stats_enabled question

Hi,

I've been playing around with the new xdp-loader to chain xdp programs
with kernel.bpf_stats_enabled set. This is what I see (from bpftool
prog):

22: xdp  name xdp_dispatcher  tag d51e469e988d81da  gpl run_time_ns 105086 run_cnt 24
        loaded_at 2020-12-15T07:52:27+0000  uid 0
        xlated 720B  jited 535B  memlock 4096B  map_ids 5
        btf_id 8
24: ext  name xdp_pass  tag 3b185187f1855c4c  gpl
        loaded_at 2020-12-15T07:52:27+0000  uid 0
        xlated 16B  jited 18B  memlock 4096B
        btf_id 9
26: ext  name xdp_drop  tag 57cd311f2e27366b  gpl
        loaded_at 2020-12-15T07:52:27+0000  uid 0
        xlated 16B  jited 18B  memlock 4096B
        btf_id 10

You'll notice that the run_time_ns and run_cnt stats are only populated
for the xdp_dispatcher. This is basically the same behavior we see today
with bpf_tail_call chaining, so it's not a regression or anything. It
would be really nice, though, if we could see those stats for each
individual xdp program in the chain. Does anyone know what it would take
for that to happen? Would it be more feasible for xdplib to optionally
report separate runtime stats itself for chained programs?

Thanks,
Brian