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libbpf: Add split BTF support for btf__load_from_kernel_by_id()

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Add a new API function btf__load_from_kernel_by_id_split(), which takes
a pointer to a base BTF object in order to support split BTF objects
when retrieving BTF information from the kernel.

Reference: https://github.com/libbpf/libbpf/issues/314

Signed-off-by: Quentin Monnet <quentin@isovalent.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210729162028.29512-8-quentin@isovalent.com
This commit is contained in:
Quentin Monnet
2021-07-29 17:20:27 +01:00
committed by Andrii Nakryiko
parent 73788dd22f
commit 512b472d97
3 changed files with 9 additions and 2 deletions
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src/libbpf.map
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@@ -376,6 +376,7 @@ LIBBPF_0.5.0 {
bpf_program__attach_kprobe_opts;
bpf_object__gen_loader;
btf__load_from_kernel_by_id;
btf__load_from_kernel_by_id_split;
btf__load_into_kernel;
btf_dump__dump_type_data;
libbpf_set_strict_mode;