]> git.karo-electronics.de Git - karo-tx-linux.git/commit
net: cacheline adjust struct netns_frags for better frag performance
authorJesper Dangaard Brouer <brouer@redhat.com>
Mon, 28 Jan 2013 23:44:14 +0000 (23:44 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 29 Jan 2013 18:36:23 +0000 (13:36 -0500)
commitcd39a7890aed7433beb3188c7ad8591e260ebf10
tree1a5de7566bbc4e1cb5f00495c664c27abc1085d4
parent656a05c899b4026ee828ccddd550202ded7a26c6
net: cacheline adjust struct netns_frags for better frag performance

This small cacheline adjustment of struct netns_frags improves
performance significantly for the fragmentation code.

Struct members 'lru_list' and 'mem' are both hot elements, and it
hurts performance, due to cacheline bouncing at every call point,
when they share a cacheline.  Also notice, how mem is placed
together with 'high_thresh' and 'low_thresh', as they are used in
the compare operations together.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/inet_frag.h