From 5472c3c6a5f0573a609f77adce8ed1bd54233c7a Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 31 May 2019 19:17:33 -0700 Subject: [PATCH] tcp: use this_cpu_read(*X) instead of *this_cpu_ptr(X) this_cpu_read(*X) is slightly faster than *this_cpu_ptr(X) Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/tcp_ipv4.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index af81e4a6a8d8..59b7edd8719c 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -771,7 +771,7 @@ static void tcp_v4_send_reset(const struct sock *sk, struct sk_buff *skb) arg.tos = ip_hdr(skb)->tos; arg.uid = sock_net_uid(net, sk && sk_fullsock(sk) ? sk : NULL); local_bh_disable(); - ctl_sk = *this_cpu_ptr(net->ipv4.tcp_sk); + ctl_sk = this_cpu_read(*net->ipv4.tcp_sk); if (sk) ctl_sk->sk_mark = (sk->sk_state == TCP_TIME_WAIT) ? inet_twsk(sk)->tw_mark : sk->sk_mark; @@ -863,7 +863,7 @@ static void tcp_v4_send_ack(const struct sock *sk, arg.tos = tos; arg.uid = sock_net_uid(net, sk_fullsock(sk) ? sk : NULL); local_bh_disable(); - ctl_sk = *this_cpu_ptr(net->ipv4.tcp_sk); + ctl_sk = this_cpu_read(*net->ipv4.tcp_sk); if (sk) ctl_sk->sk_mark = (sk->sk_state == TCP_TIME_WAIT) ? inet_twsk(sk)->tw_mark : sk->sk_mark;