linux/include/net/netns
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 [NETNS]: struct net content re-work (v3) 2008-01-28 14:57:14 -08:00
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