OpenCloudOS-Kernel/arch/x86/net
Eric Dumazet 84ccac6e78 x86: bpf_jit: small optimization in emit_bpf_tail_call()
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>
2017-08-31 11:57:37 -07:00
..
Makefile objtool, x86: Add several functions and files to the objtool whitelist 2017-06-30 10:19:19 +02:00
bpf_jit.S bpf: change x86 JITed program stack layout 2017-05-31 19:29:48 -04:00
bpf_jit_comp.c x86: bpf_jit: small optimization in emit_bpf_tail_call() 2017-08-31 11:57:37 -07:00