diff options
| author |   Eric Dumazet <edumazet@google.com> | 2018-11-27 14:42:00 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-11-30 13:26:53 -0800 |
| commit | ebeef4bcccf4681ba3de04fbf3a005f6054f7999 (patch) | |
| tree | eeda8c5023844b0c4dc1f5bb30fd7d7d94a47448 /include/net/tcp.h | |
| parent | net: Add trace events for all receive exit points (diff) | |
| download | linux-dev-ebeef4bcccf4681ba3de04fbf3a005f6054f7999.tar.xz linux-dev-ebeef4bcccf4681ba3de04fbf3a005f6054f7999.zip | |
tcp: hint compiler about sack flows
Tell the compiler that most TCP flows are using SACK these days.
There is no need to add the unlikely() clause in tcp_is_reno(),
the compiler is able to infer it.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/tcp.h')
| -rw-r--r-- | include/net/tcp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 63e37dd1c274..0c61bf0a06da 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1124,7 +1124,7 @@ void tcp_rate_check_app_limited(struct sock *sk); */ static inline int tcp_is_sack(const struct tcp_sock *tp) { - return tp->rx_opt.sack_ok; + return likely(tp->rx_opt.sack_ok); } static inline bool tcp_is_reno(const struct tcp_sock *tp) |