mirror/libbpf
1
0 Fork 0
mirror of https://github.com/netdata/libbpf.git synced 2026-11-08 20:00:43 +08:00
Code Issues Packages Projects Releases Wiki Activity

libbpf: Generalize BTF and BTF.ext type ID and strings iteration

Browse Source 
Extract and generalize the logic to iterate BTF type ID and string offset
fields within BTF types and .BTF.ext data. Expose this internally in libbpf
for re-use by bpf_linker.

Additionally, complete strings deduplication handling for BTF.ext (e.g., CO-RE
access strings), which was previously missing. There previously was no
case of deduplicating .BTF.ext data, but bpf_linker is going to use it.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210318194036.3521577-3-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko authored and Andrii Nakryiko committed 2021-03-25 23:31:23 -07:00
1 parent 082a5c6020
commit 74e94c40fe
2 files changed
+230 -174
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

src/libbpf_internal.h
+7
View File
@@ -356,4 +356,11 @@ struct bpf_core_relo {
enum bpf_core_relo_kind kind;
};
typedef int (*type_id_visit_fn)(__u32 *type_id, void *ctx);
typedef int (*str_off_visit_fn)(__u32 *str_off, void *ctx);
int btf_type_visit_type_ids(struct btf_type *t, type_id_visit_fn visit, void *ctx);
int btf_type_visit_str_offs(struct btf_type *t, str_off_visit_fn visit, void *ctx);
int btf_ext_visit_type_ids(struct btf_ext *btf_ext, type_id_visit_fn visit, void *ctx);
int btf_ext_visit_str_offs(struct btf_ext *btf_ext, str_off_visit_fn visit, void *ctx);
#endif /* __LIBBPF_LIBBPF_INTERNAL_H */