[PATCH net-next] tcp: use this_cpu_read(*X) instead of *this_cpu_ptr(X)

[Eric Dumazet]

this_cpu_read(*X) is slightly faster than *this_cpu_ptr(X)

Signed-off-by: Eric Dumazet <eduma...@google.com>
---
 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 
af81e4a6a8d8eac9aad551a129384ff6b1bf2f6c..59b7edd8719c33d747169b7ae97e4cb3d5e7bcb4
 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;
-- 
2.22.0.rc1.257.g3120a18244-goog