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| author |   Andrii Nakryiko <andriin@fb.com> | 2019-02-04 17:29:45 -0800 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2019-02-05 16:52:57 +0100 |
| commit | d5caef5b56555bfa2ac0cf730f075864a023437e (patch) | |
| tree | aa8f77aa92737d225574fe536014e9d49ff28b29 /tools/lib/bpf/libbpf.map | |
| parent | btf: extract BTF type size calculation (diff) | |
| download | linux-dev-d5caef5b56555bfa2ac0cf730f075864a023437e.tar.xz linux-dev-d5caef5b56555bfa2ac0cf730f075864a023437e.zip | |
btf: add BTF types deduplication algorithm
This patch implements BTF types deduplication algorithm. It allows to
greatly compress typical output of pahole's DWARF-to-BTF conversion or
LLVM's compilation output by detecting and collapsing identical types emitted in
isolation per compilation unit. Algorithm also resolves struct/union forward
declarations into concrete BTF types representing referenced struct/union. If
undesired, this resolution can be disabled through specifying corresponding options.
Algorithm itself and its application to Linux kernel's BTF types is
described in details at:
https://facebookmicrosites.github.io/bpf/blog/2018/11/14/btf-enhancement.html
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to '')
| -rw-r--r-- | tools/lib/bpf/libbpf.map | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.map b/tools/lib/bpf/libbpf.map index 7990e857e003..7e4a8c1e1c1c 100644 --- a/tools/lib/bpf/libbpf.map +++ b/tools/lib/bpf/libbpf.map @@ -133,6 +133,7 @@ LIBBPF_0.0.2 { bpf_map_lookup_elem_flags; bpf_object__find_map_fd_by_name; bpf_get_link_xdp_id; + btf__dedup; btf__get_map_kv_tids; btf_ext__free; btf_ext__func_info_rec_size; |