| Message ID | 20211006051107.17921-1-andrii@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | libbpf: add bulk BTF type copying API | expand |
Hello: This series was applied to bpf/bpf-next.git (refs/heads/master): On Tue, 5 Oct 2021 22:11:04 -0700 you wrote: > From: Andrii Nakryiko <andrii@kernel.org> > > Add bulk BTF type data copying API, btf__add_btf(), to libbpf. This API is > useful for tools that are manipulating BPF, such as pahole. They abstract away > the details of implementing a pretty mundane, but important to get right, > details of handling all possible BTF kinds, as well as, importantly, adjusting > BTF type IDs and copying/deduplicating strings and string offsets, referenced > from copied BTF types. > > [...] Here is the summary with links: - [v2,bpf-next,1/3] libbpf: add API that copies all BTF types from one BTF object to another https://git.kernel.org/bpf/bpf-next/c/7ca611215983 - [v2,bpf-next,2/3] selftests/bpf: refactor btf_write selftest to reuse BTF generation logic https://git.kernel.org/bpf/bpf-next/c/c65eb8082d4c - [v2,bpf-next,3/3] selftests/bpf: test new btf__add_btf() API https://git.kernel.org/bpf/bpf-next/c/9d0578722391 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
From: Andrii Nakryiko <andrii@kernel.org> Add bulk BTF type data copying API, btf__add_btf(), to libbpf. This API is useful for tools that are manipulating BPF, such as pahole. They abstract away the details of implementing a pretty mundane, but important to get right, details of handling all possible BTF kinds, as well as, importantly, adjusting BTF type IDs and copying/deduplicating strings and string offsets, referenced from copied BTF types. Also, being a batch API, it's possible to improve the efficiency by preallocating necessary memory more efficiently. This API is going to be used by pahole to implement efficient parallelized BTF encoding. v1->v2: - fix typo in doc comment and selftest clean up fix (Song). Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Andrii Nakryiko (3): libbpf: add API that copies all BTF types from one BTF object to another selftests/bpf: refactor btf_write selftest to reuse BTF generation logic selftests/bpf: test new btf__add_btf() API tools/lib/bpf/btf.c | 114 +++++++++++++- tools/lib/bpf/btf.h | 22 +++ tools/lib/bpf/libbpf.map | 1 + .../selftests/bpf/prog_tests/btf_write.c | 141 +++++++++++++++++- 4 files changed, 270 insertions(+), 8 deletions(-)