Eric Dumazet 8e602ce298 netns: reorder fields in struct net ...

In a network bench, I noticed an unfortunate false sharing between
'loopback_dev' and 'count' fields in "struct net".

'count' is written each time a socket is created or destroyed, while
loopback_dev might be often read in routing code.

Move loopback_dev in a read mostly section of "struct net"

Note: struct netns_xfrm is cache line aligned on SMP.
(It contains a "struct dst_ops")
Move it at the end to avoid holes, and reduce sizeof(struct net) by 128
bytes on ia32.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2010-10-17 13:49:14 -07:00

..

conntrack.h

percpu: add __percpu sparse annotations to net

2010-02-16 23:05:38 -08:00

core.h

percpu: add __percpu sparse annotations to net

2010-02-16 23:05:38 -08:00

dccp.h

[NETNS][DCCPV6]: Move the dccp_v6_ctl_sk on the struct net.

2008-04-13 22:32:25 -07:00

generic.h

net: disallow to use net_assign_generic externally

2010-04-27 15:49:02 -07:00

hash.h

netns: introduce the net_hash_mix "salt" for hashes

2008-06-16 17:14:11 -07:00

ipv4.h

ipv4: remove ip_rt_secret timer (v4)

2010-05-08 01:57:52 -07:00

ipv6.h

ipv6: ip6mr: support multiple tables

2010-05-11 14:40:55 +02:00

mib.h

netns xfrm: per-netns MIBs

2008-11-25 17:59:52 -08:00

packet.h

packet: convert socket list to RCU (v3)

2010-02-22 15:45:56 -08:00

unix.h

…

x_tables.h

net, netns_xt: shrink netns_xt members

2009-07-05 19:16:18 -07:00

xfrm.h

netns: reorder fields in struct net

2010-10-17 13:49:14 -07:00