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

Sasha Levin
2024-03-24T22:36:58Z

From: Andrii Nakryiko <andrii@kernel.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@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20240201172027.604869-4-andrii@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.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