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authorEric Dumazet <dada1@cosmosbay.com>2008-11-25 21:17:14 -0800
committerDavid S. Miller <davem@davemloft.net>2008-11-25 21:17:14 -0800
commitdd24c00191d5e4a1ae896aafe33c6b8095ab4bd1 (patch)
treee955c09e0b288e50c706b6ee409229d5a930c80c /net/ipv4/inet_connection_sock.c
parent1748376b6626acf59c24e9592ac67b3fe2a0e026 (diff)
downloadop-kernel-dev-dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1.zip
op-kernel-dev-dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1.tar.gz
net: Use a percpu_counter for orphan_count
Instead of using one atomic_t per protocol, use a percpu_counter for "orphan_count", to reduce cache line contention on heavy duty network servers. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/inet_connection_sock.c')
-rw-r--r--net/ipv4/inet_connection_sock.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 05af807..1ccdbba 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -561,7 +561,7 @@ void inet_csk_destroy_sock(struct sock *sk)
sk_refcnt_debug_release(sk);
- atomic_dec(sk->sk_prot->orphan_count);
+ percpu_counter_dec(sk->sk_prot->orphan_count);
sock_put(sk);
}
@@ -641,7 +641,7 @@ void inet_csk_listen_stop(struct sock *sk)
sock_orphan(child);
- atomic_inc(sk->sk_prot->orphan_count);
+ percpu_counter_inc(sk->sk_prot->orphan_count);
inet_csk_destroy_sock(child);
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