diff options
| author |   Yonghong Song <yhs@fb.com> | 2019-02-04 11:00:57 -0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-02-04 12:48:36 -0800 |
| commit | b8dcf8d149db5999d3db937822d3e374eca68b9f (patch) | |
| tree | 6b72047ea531970401b0a7523f5d7557e5d0f01b /tools | |
| parent | selftests/bpf: use localhost in tcp_{server,client}.py (diff) | |
| download | linux-dev-b8dcf8d149db5999d3db937822d3e374eca68b9f.tar.xz linux-dev-b8dcf8d149db5999d3db937822d3e374eca68b9f.zip | |
tools/bpf: expose functions btf_ext__* as API functions
The following set of functions, which manipulates .BTF.ext
section, are exposed as API functions:
. btf_ext__new
. btf_ext__free
. btf_ext__reloc_func_info
. btf_ext__reloc_line_info
. btf_ext__func_info_rec_size
. btf_ext__line_info_rec_size
These functions are useful for JIT based bpf codegen, e.g.,
bcc, to manipulate in-memory .BTF.ext sections.
The signature of function btf_ext__reloc_func_info()
is also changed to be the same as its definition in btf.c.
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | tools/lib/bpf/btf.h | 24 | ||||
| -rw-r--r-- | tools/lib/bpf/libbpf.map | 6 |
2 files changed, 18 insertions, 12 deletions
diff --git a/tools/lib/bpf/btf.h b/tools/lib/bpf/btf.h index b1e8e54cc21d..418389e2a662 100644 --- a/tools/lib/bpf/btf.h +++ b/tools/lib/bpf/btf.h @@ -67,18 +67,18 @@ LIBBPF_API int btf__fd(const struct btf *btf); LIBBPF_API const char *btf__name_by_offset(const struct btf *btf, __u32 offset); LIBBPF_API int btf__get_from_id(__u32 id, struct btf **btf); -struct btf_ext *btf_ext__new(__u8 *data, __u32 size); -void btf_ext__free(struct btf_ext *btf_ext); -int btf_ext__reloc_func_info(const struct btf *btf, - const struct btf_ext *btf_ext, - const char *sec_name, __u32 insns_cnt, - void **func_info, __u32 *func_info_len); -int btf_ext__reloc_line_info(const struct btf *btf, - const struct btf_ext *btf_ext, - const char *sec_name, __u32 insns_cnt, - void **line_info, __u32 *cnt); -__u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext); -__u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext); +LIBBPF_API struct btf_ext *btf_ext__new(__u8 *data, __u32 size); +LIBBPF_API void btf_ext__free(struct btf_ext *btf_ext); +LIBBPF_API int btf_ext__reloc_func_info(const struct btf *btf, + const struct btf_ext *btf_ext, + const char *sec_name, __u32 insns_cnt, + void **func_info, __u32 *cnt); +LIBBPF_API int btf_ext__reloc_line_info(const struct btf *btf, + const struct btf_ext *btf_ext, + const char *sec_name, __u32 insns_cnt, + void **line_info, __u32 *cnt); +LIBBPF_API __u32 btf_ext__func_info_rec_size(const struct btf_ext *btf_ext); +LIBBPF_API __u32 btf_ext__line_info_rec_size(const struct btf_ext *btf_ext); #ifdef __cplusplus } /* extern "C" */ diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 62c680fb13d1..46441c5f030b 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -133,4 +133,10 @@ LIBBPF_0.0.2 { bpf_map_lookup_elem_flags; bpf_object__find_map_fd_by_name; bpf_get_link_xdp_id; + btf_ext__free; + btf_ext__func_info_rec_size; + btf_ext__line_info_rec_size; + btf_ext__new; + btf_ext__reloc_func_info; + btf_ext__reloc_line_info; } LIBBPF_0.0.1; |