diff options
| author | Eric Dumazet <edumazet@google.com> | 2018-01-29 02:48:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-31 12:55:56 +0100 |
| commit | c964ad34f6d9c5c907e5cc2f1a855d044346aa8a (patch) | |
| tree | b571eeaa5281e169eeb7b41aeb3313440c9f303f /init/Kconfig | |
| parent | c98ff7299b404f110167883695f81080723e6e15 (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 'init/Kconfig')
0 files changed, 0 insertions, 0 deletions