From f7748e2952387f1a67db3bc618050149427420c9 Mon Sep 17 00:00:00 2001 From: Yonghong Song Date: Tue, 5 Feb 2019 21:38:30 -0800 Subject: [PATCH] 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 Signed-off-by: Alexei Starovoitov --- tools/lib/bpf/btf.c | 4 ++-- 1 file 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; } -- 2.30.2