tools/bpf: silence a libbpf unnecessary warning
authorYonghong Song <yhs@fb.com>
Wed, 6 Feb 2019 05:38:30 +0000 (21:38 -0800)
committerAlexei Starovoitov <ast@kernel.org>
Wed, 6 Feb 2019 06:07:03 +0000 (22:07 -0800)
commitf7748e2952387f1a67db3bc618050149427420c9
tree47c27ec3ea03b2d914e6e813e19c3a67757e9003
parenta6c109a6b746509f5030d20d57b35e566cf3a04f
tools/bpf: silence a libbpf unnecessary warning

Commit 96408c43447a ("tools/bpf: implement libbpf
btf__get_map_kv_tids() API function") refactored
function bpf_map_find_btf_info() and moved bulk of
implementation into btf.c as btf__get_map_kv_tids().
This change introduced a bug such that test_btf will
print out the following warning although the test passed:
  BTF libbpf test[2] (test_btf_nokv.o): libbpf: map:btf_map
      container_name:____btf_map_btf_map cannot be found
      in BTF. Missing BPF_ANNOTATE_KV_PAIR?

Previously, the error message is guarded with pr_debug().
Commit 96408c43447a changed it to pr_warning() and
hence caused the warning.

Restoring to pr_debug() for the message fixed the issue.

Fixes: 96408c43447a ("tools/bpf: implement libbpf btf__get_map_kv_tids() API function")
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
tools/lib/bpf/btf.c