After building the kernel I see:
$ git status -s
?? tools/bpf/resolve_btfids/libbpf/
Commit af03299d8536 ("tools/resolve_btfids: Install subcmd headers")
started copying header files into
tools/bpf/resolve_btfids/libsubcmd/include/subcmd. These *.h files are
not covered by higher level wildcard gitignores.
gitignore the entire libsubcmd directory. It's created as part of build
and removed by clean.
Fixes: af03299d8536 ("tools/resolve_btfids: Install subcmd headers")
Signed-off-by: Greg Thelen <gthelen@xxxxxxxxxx>