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| author | Eduard Zingerman <ezingerman@fb.com> | 2026-10-09 03:47:49 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-10-09 20:29:14 +0000 |
| commit | 2fa579694ddf3a96454669c764ca0c06dea50817 (patch) | |
| tree | 02fdaac2826067c2abf8aa60b99cca2bde7ba2f0 /include | |
| parent | 1291ad5906933355fbe7b042ee5e3eedb5743e46 (diff) | |
| download | linux-next-2fa579694ddf3a96454669c764ca0c06dea50817.tar.gz linux-next-2fa579694ddf3a96454669c764ca0c06dea50817.zip | |
bpf: Record basic-block ends in insn_aux_data
SCEV needs information about the program's basic-block structure.
Piggyback on compute_predecessors() and set
insn_aux_data->bb_end for an instruction if:
- it has multiple successors, or
- its sole successor has multiple predecessors, or
- it is a jump instruction.
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://patch.msgid.link/20261009-scev-minimal-rebase-v3-31-bcba9bc53ac9@gmail.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf_verifier.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/bpf_verifier.h b/include/linux/bpf_verifier.h index 7fb1e315de48..1458e50a1ad1 100644 --- a/include/linux/bpf_verifier.h +++ b/include/linux/bpf_verifier.h @@ -741,6 +741,7 @@ struct bpf_insn_aux_data { bool is_iter_next; /* bpf_iter_<type>_next() kfunc call */ bool call_with_percpu_alloc_ptr; /* {this,per}_cpu_ptr() with prog percpu alloc */ bool arena_scalar; /* ldx/stx/st/atomic through a number, it's an address in arena */ + bool bb_end; /* last instruction of a basic block */ u8 alu_state; /* used in combination with alu_limit */ /* true if STX or LDX instruction is a part of a spill/fill * pattern for a bpf_fastcall call. |