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libbpf: Add BTF permutation support for type reordering

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Introduce btf__permute() API to allow in-place rearrangement of BTF types.
This function reorganizes BTF type order according to a provided array of
type IDs, updating all type references to maintain consistency.

Signed-off-by: Donglin Peng <pengdonglin@xiaomi.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/bpf/20260109130003.3313716-2-dolinux.peng@gmail.com
This commit is contained in:
Donglin Peng
2026-01-09 20:59:53 +08:00
committed by Andrii Nakryiko
parent 2c5038dcf4
commit b7c6c02b5f
3 changed files with 176 additions and 0 deletions
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src/libbpf.map
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@@ -453,4 +453,5 @@ LIBBPF_1.7.0 {
bpf_map__exclusive_program;
bpf_prog_assoc_struct_ops;
bpf_program__assoc_struct_ops;
btf__permute;
} LIBBPF_1.6.0;