Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-26 06:02:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

libbpf: Add base BTF accessor

Browse Source 
Add ability to get base BTF. It can be also used to check if BTF is split BTF.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201202065244.530571-3-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2020-12-01 22:52:42 -08:00 committed by Alexei Starovoitov
parent 71ccb50074
commit 0cfdcd6378
3 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
tools/lib/bpf/btf.c
View File

@ -432,6 +432,11 @@ __u32 btf__get_nr_types(const struct btf *btf)
return btf->start_id + btf->nr_types - 1;
}
const struct btf *btf__base_btf(const struct btf *btf)
{
return btf->base_btf;
}
/* internal helper returning non-const pointer to a type */
static struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id)
{

1
tools/lib/bpf/btf.h
View File

@ -51,6 +51,7 @@ LIBBPF_API __s32 btf__find_by_name(const struct btf *btf,
LIBBPF_API __s32 btf__find_by_name_kind(const struct btf *btf,
const char *type_name, __u32 kind);
LIBBPF_API __u32 btf__get_nr_types(const struct btf *btf);
LIBBPF_API const struct btf *btf__base_btf(const struct btf *btf);
LIBBPF_API const struct btf_type *btf__type_by_id(const struct btf *btf,
__u32 id);
LIBBPF_API size_t btf__pointer_size(const struct btf *btf);

1
tools/lib/bpf/libbpf.map
View File

@ -340,6 +340,7 @@ LIBBPF_0.2.0 {
LIBBPF_0.3.0 {
global:
btf__base_btf;
btf__parse_elf_split;
btf__parse_raw_split;
btf__parse_split;