[PATCH bpf-next 4/6] libbpf: explicitly mark btf__load() and btf__get_from_id() as deprecated

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Now that we have replacement functions for btf__load() and
btf__get_from_id(), with names that better reflect what the functions
do, and that we have updated the different tools in the repository
calling the legacy functions, let's explicitly mark those as deprecated.

References:

- https://github.com/libbpf/libbpf/issues/278
- https://github.com/libbpf/libbpf/wiki/Libbpf:-the-road-to-v1.0#btfh-apis

Signed-off-by: Quentin Monnet <quentin@xxxxxxxxxxxxx>
---
 tools/lib/bpf/btf.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h
index 0bd9d3952d19..522277b16a88 100644
--- a/tools/lib/bpf/btf.h
+++ b/tools/lib/bpf/btf.h
@@ -45,7 +45,8 @@ LIBBPF_API struct btf *btf__parse_raw(const char *path);
 LIBBPF_API struct btf *btf__parse_raw_split(const char *path, struct btf *base_btf);
 
 LIBBPF_API int btf__finalize_data(struct bpf_object *obj, struct btf *btf);
-LIBBPF_API int btf__load(struct btf *btf);
+LIBBPF_API LIBBPF_DEPRECATED("the name was confusing and will be removed in the future libbpf versions, please use btf__load_into_kernel() instead")
+int btf__load(struct btf *btf);
 LIBBPF_API int btf__load_into_kernel(struct btf *btf);
 LIBBPF_API __s32 btf__find_by_name(const struct btf *btf,
 				   const char *type_name);
@@ -67,7 +68,8 @@ LIBBPF_API void btf__set_fd(struct btf *btf, int fd);
 LIBBPF_API const void *btf__get_raw_data(const struct btf *btf, __u32 *size);
 LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset);
 LIBBPF_API const char *btf__str_by_offset(const struct btf *btf, __u32 offset);
-LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf);
+LIBBPF_API LIBBPF_DEPRECATED("the name was confusing and will be removed in the future libbpf versions, please use btf__load_from_kernel_by_id() instead")
+int btf__get_from_id(__u32 id, struct btf **btf);
 LIBBPF_API int btf__load_from_kernel_by_id(__u32 id, struct btf **btf);
 LIBBPF_API int btf__get_map_kv_tids(const struct btf *btf, const char *map_name,
 				    __u32 expected_key_size,
-- 
2.30.2




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