diff options
| author | Eric Dumazet <edumazet@google.com> | 2018-01-30 03:37:39 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-03 17:04:24 +0100 |
| commit | 5a802e670c46ee2027ae43ec03501ecdb85d080a (patch) | |
| tree | e77c4a485d1987c711ab48eff14ef1d683781aa7 /net/socket.c | |
| parent | 1367d854b97493bfb1f3d24cf89ba60cb7f059ea (diff) | |
x86: bpf_jit: small optimization in emit_bpf_tail_call()
[ upstream commit 84ccac6e7854ebbfb56d2fc6d5bef9be49bb304c ]
Saves 4 bytes replacing following instructions :
lea rax, [rsi + rdx * 8 + offsetof(...)]
mov rax, qword ptr [rax]
cmp rax, 0
by :
mov rax, [rsi + rdx * 8 + offsetof(...)]
test rax, rax
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/socket.c')
0 files changed, 0 insertions, 0 deletions