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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> |
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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 |