xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

libbpf: add .BTF.ext offset relocation section loading

Browse Source 
Add support for BPF CO-RE offset relocations. Add section/record
iteration macros for .BTF.ext. These macro are useful for iterating over
each .BTF.ext record, either for dumping out contents or later for BPF
CO-RE relocation handling.

To enable other parts of libbpf to work with .BTF.ext contents, moved
a bunch of type definitions into libbpf_internal.h.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Andrii Nakryiko
2019-08-07 14:39:50 -07:00
committed by Alexei Starovoitov
parent b03bc6853c
commit 4cedc0dad9
3 changed files with 136 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
tools/lib/bpf/btf.h
View File

@@ -58,6 +58,10 @@ struct btf_ext_header {
__u32 func_info_len;
__u32 line_info_off;
__u32 line_info_len;
/* optional part of .BTF.ext header */
__u32 offset_reloc_off;
__u32 offset_reloc_len;
};
LIBBPF_API void btf__free(struct btf *btf);