netdev - [PATCH net-next] ipv4: icmp: use this_cpu_read() in icmp

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Message-Id: <20190601020902.158016-1-edumazet@google.com>
Date:   Fri, 31 May 2019 19:09:02 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next] ipv4: icmp: use this_cpu_read() in icmp_sk()

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

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/ipv4/icmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index f3a5893b1e8619716f19f85dc77f2e1e12284b4d..49d6b037b113e85877f8e689e690f1c0d3427386 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -206,7 +206,7 @@ static const struct icmp_control icmp_pointers[NR_ICMP_TYPES+1];
  */
 static struct sock *icmp_sk(struct net *net)
 {
-	return *this_cpu_ptr(net->ipv4.icmp_sk);
+	return this_cpu_read(*net->ipv4.icmp_sk);
 }
 
 /* Called with BH disabled */
-- 
2.22.0.rc1.257.g3120a18244-goog