diff options
| author | Eric Dumazet <dada1@cosmosbay.com> | 2008-11-25 21:17:14 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-25 21:17:14 -0800 |
| commit | dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1 (patch) | |
| tree | e955c09e0b288e50c706b6ee409229d5a930c80c /include/net/tcp.h | |
| parent | 1748376b6626acf59c24e9592ac67b3fe2a0e026 (diff) | |
| download | blackbird-op-linux-dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1.tar.gz blackbird-op-linux-dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1.zip | |
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.h | 2 |
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 @@ extern struct inet_hashinfo tcp_hashinfo; -extern atomic_t tcp_orphan_count; +extern struct percpu_counter tcp_orphan_count; extern void tcp_time_wait(struct sock *sk, int state, int timeo); #define MAX_TCP_HEADER (128 + MAX_HEADER) |
