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Date:   Tue, 20 Jul 2021 17:08:18 -0700
From:   Alexei Starovoitov <>
Subject: [PATCH bpf-next 0/4] libbpf: Move CO-RE logic into separate file.

From: Alexei Starovoitov <>

Split CO-RE processing logic from libbpf into separate file
with an interface that doesn't dependend on libbpf internal details.
As the next step relo_core.c will be compiled with libbpf and with the kernel.
The _internal_ interface between libbpf/CO-RE and kernel/CO-RE will be:
int bpf_core_apply_relo_insn(const char *prog_name, struct bpf_insn *insn,
			     int insn_idx,
			     const struct bpf_core_relo *relo,
			     int relo_idx,
			     const struct btf *local_btf,
			     struct bpf_core_cand_list *cands);
where bpf_core_relo and bpf_core_cand_list are simple types
prepared by kernel and libbpf.

Though diff stat shows a lot of lines inserted/deleted they are moved lines.
Pls review with diff.colorMoved.

Alexei Starovoitov (4):
  libbpf: Cleanup the layering between CORE and bpf_program.
  libbpf: Split bpf_core_apply_relo() into bpf_program indepdent helper.
  libbpf: Move CO-RE types into relo_core.h.
  libbpf: Split CO-RE logic into relo_core.c.

 tools/lib/bpf/Build             |    2 +-
 tools/lib/bpf/libbpf.c          | 1344 +------------------------------
 tools/lib/bpf/libbpf_internal.h |   81 +-
 tools/lib/bpf/relo_core.c       | 1326 ++++++++++++++++++++++++++++++
 tools/lib/bpf/relo_core.h       |  102 +++
 5 files changed, 1473 insertions(+), 1382 deletions(-)
 create mode 100644 tools/lib/bpf/relo_core.c
 create mode 100644 tools/lib/bpf/relo_core.h


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