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author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-10-16 00:02:20 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2009-10-20 04:02:06 -0400 |
commit | 94b059520d6c0cea852dc9a3e9033c6f123df7c1 (patch) | |
tree | 591e57d7d41edf0469695a35c36cfeb4d2b265b3 /net/nonet.c | |
parent | 7b6856a0296a8f187bb88ba31fa83a08abba7966 (diff) |
af_packet: Avoid cache line dirtying
While doing multiple captures, I found af_packet was dirtying cache line
containing its prot_hook.
This slow down machines where several cpus are necessary to handle capture
traffic, as each prot_hook is traversed for each packet coming in or out
the host.
This patches moves "struct packet_type prot_hook" to the end of
packet_sock, and uses a ____cacheline_aligned_in_smp to make sure
this remains shared by all cpus.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/nonet.c')
0 files changed, 0 insertions, 0 deletions