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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 /net/ipv4/proc.c
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 'net/ipv4/proc.c')
-rw-r--r--net/ipv4/proc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 4944b47ad628..614958b7c276 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -54,7 +54,7 @@ static int sockstat_seq_show(struct seq_file *seq, void *v)
54 socket_seq_show(seq); 54 socket_seq_show(seq);
55 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n", 55 seq_printf(seq, "TCP: inuse %d orphan %d tw %d alloc %d mem %d\n",
56 sock_prot_inuse_get(net, &tcp_prot), 56 sock_prot_inuse_get(net, &tcp_prot),
57 atomic_read(&tcp_orphan_count), 57 (int)percpu_counter_sum_positive(&tcp_orphan_count),
58 tcp_death_row.tw_count, 58 tcp_death_row.tw_count,
59 (int)percpu_counter_sum_positive(&tcp_sockets_allocated), 59 (int)percpu_counter_sum_positive(&tcp_sockets_allocated),
60 atomic_read(&tcp_memory_allocated)); 60 atomic_read(&tcp_memory_allocated));