On Thu, Nov 28, 2024 at 01:23:44AM +0000, Ihor Solodrai wrote: SNIP > Test results for this patch series: > > 1: Validation of BTF encoding of functions; this may take some time: Ok > 2: Default BTF on a system without BTF: Ok > 3: Flexible arrays accounting: WARNING: still unsuported BTF_KIND_DECL_TAG(bpf_fastcall) for bpf_cast_to_kern_ctx already with attribute (bpf_kfunc), ignoring > WARNING: still unsuported BTF_KIND_DECL_TAG(bpf_fastcall) for bpf_rdonly_cast already with attribute (bpf_kfunc), ignoring > pahole: type 'nft_pipapo_elem' not found > pahole: type 'ip6t_standard' not found > pahole: type 'ip6t_error' not found > pahole: type 'nft_rbtree_elem' not found > pahole: type 'nft_rule_dp_last' not found > pahole: type 'nft_bitmap_elem' not found > pahole: type 'fuse_direntplus' not found > pahole: type 'ipt_standard' not found > pahole: type 'ipt_error' not found > pahole: type 'tls_rec' not found > pahole: type 'nft_rhash_elem' not found > pahole: type 'nft_hash_elem' not found > Ok > 4: Pretty printing of files using DWARF type information: Ok > 5: Parallel reproducible DWARF Loading/Serial BTF encoding: Ok hi, when trying selftests with this change, I'm getting wrong .BTF on bpf selftest bpf_testmod.ko module $ bpftool btf dump file ./bpf_testmod.ko Error: failed to load BTF from ./bpf_testmod.ko: Invalid argument jirka > > > [1]: https://lore.kernel.org/dwarves/20241016001025.857970-1-ihor.solodrai@xxxxx/ > [2]: https://github.com/theihor/dwarves/pull/3 > [3]: https://lore.kernel.org/dwarves/8678ce40-3ce2-4ece-985b-a40427386d57@xxxxxxxxxx/ > [4]: https://github.com/acmel/dwarves/compare/master...alan-maguire:dwarves:elf-prep > [5]: https://github.com/theihor/dwarves/pull/8 > [6]: https://gist.github.com/theihor/f000ce89427828e61fdaa567b332649b > [7]: https://github.com/theihor/dwarves/pull/8/commits/a7bc67d79d90f98776c6dc5fdaf9f088eb09909d > > > Alan Maguire (3): > btf_encoder: simplify function encoding > btf_encoder: store,use section-relative addresses in ELF function > representation > btf_encoder: separate elf function, saved function representations > > Ihor Solodrai (6): > dwarf_loader: introduce pre_load_module hook to conf_load > btf_encoder: introduce elf_functions struct type > btf_encoder: collect elf_functions in btf_encoder__pre_load_module > btf_encoder: switch to shared elf_functions table > btf_encoder: introduce btf_encoding_context > pahole: faster reproducible BTF encoding > > btf_encoder.c | 661 ++++++++++++++++++++++++++++++------------------- > btf_encoder.h | 6 + > dwarf_loader.c | 18 +- > dwarves.c | 47 ++-- > dwarves.h | 16 +- > pahole.c | 265 +++++++++----------- > 6 files changed, 567 insertions(+), 446 deletions(-) > > -- > 2.47.0 > >
