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authorEric Dumazet <dada1@cosmosbay.com>2008-11-26 00:17:14 -0500
committerDavid S. Miller <davem@davemloft.net>2008-11-26 00:17:14 -0500
commitdd24c00191d5e4a1ae896aafe33c6b8095ab4bd1 (patch)
treee955c09e0b288e50c706b6ee409229d5a930c80c /include/net/tcp.h
parent1748376b6626acf59c24e9592ac67b3fe2a0e026 (diff)
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 'include/net/tcp.h')
-rw-r--r--include/net/tcp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index cbca3b8a133d..de1e91d959b8 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -46,7 +46,7 @@
46 46
47extern struct inet_hashinfo tcp_hashinfo; 47extern struct inet_hashinfo tcp_hashinfo;
48 48
49extern atomic_t tcp_orphan_count; 49extern struct percpu_counter tcp_orphan_count;
50extern void tcp_time_wait(struct sock *sk, int state, int timeo); 50extern void tcp_time_wait(struct sock *sk, int state, int timeo);
51 51
52#define MAX_TCP_HEADER (128 + MAX_HEADER) 52#define MAX_TCP_HEADER (128 + MAX_HEADER)