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authorYonghong Song <yhs@fb.com>2019-02-05 21:38:30 -0800
committerAlexei Starovoitov <ast@kernel.org>2019-02-05 22:07:03 -0800
commitf7748e2952387f1a67db3bc618050149427420c9 (patch)
tree47c27ec3ea03b2d914e6e813e19c3a67757e9003 /tools/lib/bpf/btf.c
parenttools/bpf: add const qualifier to btf__get_map_kv_tids() map_name parameter (diff)
downloadlinux-dev-f7748e2952387f1a67db3bc618050149427420c9.tar.xz
linux-dev-f7748e2952387f1a67db3bc618050149427420c9.zip
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>
Diffstat (limited to '')
-rw-r--r--tools/lib/bpf/btf.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index 3b3a2959d03a..ab6528c935a1 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -531,8 +531,8 @@ int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
container_id = btf__find_by_name(btf, container_name);
if (container_id < 0) {
- pr_warning("map:%s container_name:%s cannot be found in BTF. Missing BPF_ANNOTATE_KV_PAIR?\n",
- map_name, container_name);
+ pr_debug("map:%s container_name:%s cannot be found in BTF. Missing BPF_ANNOTATE_KV_PAIR?\n",
+ map_name, container_name);
return container_id;
}