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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 <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2019-05-31 19:17:33 -07:00 committed by David S. Miller
parent 046386ca0c
commit 5472c3c6a5
1 changed files with 2 additions and 2 deletions
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4
net/ipv4/tcp_ipv4.c
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@ -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;