8e602ce298
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> |
||
|---|---|---|
| .. | ||
| conntrack.h | ||
| core.h | ||
| dccp.h | ||
| generic.h | ||
| hash.h | ||
| ipv4.h | ||
| ipv6.h | ||
| mib.h | ||
| packet.h | ||
| unix.h | ||
| x_tables.h | ||
| xfrm.h | ||