diff options
| author | Alexei Starovoitov <ast@fb.com> | 2017-03-15 18:26:42 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-16 20:44:11 -0700 |
| commit | 81ed18ab3098b6519274545e80a29caacb77d160 (patch) | |
| tree | 62cf05acb5648f25efd010110c6f40b70d1371c6 /include/linux/bpf.h | |
| parent | 8041902dae5299c1f194ba42d14383f734631009 (diff) | |
| download | lwn-81ed18ab3098b6519274545e80a29caacb77d160.tar.gz lwn-81ed18ab3098b6519274545e80a29caacb77d160.zip | |
bpf: add helper inlining infra and optimize map_array lookup
Optimize bpf_call -> bpf_map_lookup_elem() -> array_map_lookup_elem()
into a sequence of bpf instructions.
When JIT is on the sequence of bpf instructions is the sequence
of native cpu instructions with significantly faster performance
than indirect call and two function's prologue/epilogue.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/bpf.h')
| -rw-r--r-- | include/linux/bpf.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 909fc033173a..da8c64ca8dc9 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -35,6 +35,7 @@ struct bpf_map_ops { void *(*map_fd_get_ptr)(struct bpf_map *map, struct file *map_file, int fd); void (*map_fd_put_ptr)(void *ptr); + u32 (*map_gen_lookup)(struct bpf_map *map, struct bpf_insn *insn_buf); }; struct bpf_map { |