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authorEric Dumazet <dada1@cosmosbay.com>2008-11-26 08:16:35 +0300
committerDavid S. Miller <davem@davemloft.net>2008-11-26 08:16:35 +0300
commit1748376b6626acf59c24e9592ac67b3fe2a0e026 (patch)
tree65a28205daf1ca92e31389440764fc407365014e /net/ipv6
parentc1b56878fb68e9c14070939ea4537ad4db79ffae (diff)
downloadlinux-1748376b6626acf59c24e9592ac67b3fe2a0e026.tar.xz
net: Use a percpu_counter for sockets_allocated
Instead of using one atomic_t per protocol, use a percpu_counter for "sockets_allocated", to reduce cache line contention on heavy duty network servers. Note : We revert commit (248969ae31e1b3276fc4399d67ce29a5d81e6fd9 net: af_unix can make unix_nr_socks visbile in /proc), since it is not anymore used after sock_prot_inuse_add() addition Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/tcp_ipv6.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index f259c9671f3e..8702b06cb60a 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1830,7 +1830,7 @@ static int tcp_v6_init_sock(struct sock *sk)
sk->sk_sndbuf = sysctl_tcp_wmem[1];
sk->sk_rcvbuf = sysctl_tcp_rmem[1];
- atomic_inc(&tcp_sockets_allocated);
+ percpu_counter_inc(&tcp_sockets_allocated);
return 0;
}