linux-kernel - [PATCH 6.8 120/715] libbpf: Add btf__new_split() API that was declared but not implemented

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Message-ID: <20240324223455.1342824-121-sashal@kernel.org>
Date: Sun, 24 Mar 2024 18:24:59 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Andrii Nakryiko <andrii@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Eduard Zingerman <eddyz87@...il.com>,
	Sasha Levin <sashal@...nel.org>
Subject: [PATCH 6.8 120/715] libbpf: Add btf__new_split() API that was declared but not implemented

From: Andrii Nakryiko <andrii@...nel.org>

[ Upstream commit c81a8ab196b5083d5109a51585fcc24fa2055a77 ]

Seems like original commit adding split BTF support intended to add
btf__new_split() API, and even declared it in libbpf.map, but never
added (trivial) implementation. Fix this.

Fixes: ba451366bf44 ("libbpf: Implement basic split BTF support")
Signed-off-by: Andrii Nakryiko <andrii@...nel.org>
Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
Acked-by: Eduard Zingerman <eddyz87@...il.com>
Link: https://lore.kernel.org/bpf/20240201172027.604869-4-andrii@kernel.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 tools/lib/bpf/btf.c      | 5 +++++
 tools/lib/bpf/libbpf.map | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index ee95fd379d4d8..b61bc5d1009b7 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -1079,6 +1079,11 @@ struct btf *btf__new(const void *data, __u32 size)
 	return libbpf_ptr(btf_new(data, size, NULL));
 }
 
+struct btf *btf__new_split(const void *data, __u32 size, struct btf *base_btf)
+{
+	return libbpf_ptr(btf_new(data, size, base_btf));
+}
+
 static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,
 				 struct btf_ext **btf_ext)
 {
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map
index d9e1f57534fa7..386964f572a8f 100644
--- a/tools/lib/bpf/libbpf.map
+++ b/tools/lib/bpf/libbpf.map
@@ -245,7 +245,6 @@ LIBBPF_0.3.0 {
 		btf__parse_raw_split;
 		btf__parse_split;
 		btf__new_empty_split;
-		btf__new_split;
 		ring_buffer__epoll_fd;
 } LIBBPF_0.2.0;
 
@@ -411,5 +410,7 @@ LIBBPF_1.3.0 {
 } LIBBPF_1.2.0;
 
 LIBBPF_1.4.0 {
+	global:
 		bpf_token_create;
+		btf__new_split;
 } LIBBPF_1.3.0;
-- 
2.43.0