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| H A D | tun.c | diff 83b1bc122cab87547731a154db5feec5b9d4807c Thu Dec 06 02:08:17 CST 2018 Li RongQing <lirongqing@baidu.com> tun: align write-heavy flow entry members to a cache line
tun flow entry 'updated' fields are written when receive
every packet. Thus if a flow is receiving packets from a
particular flow entry, it'll cause false-sharing with
all the other who has looked it up, so move it in its own
cache line
and update 'queue_index' and 'update' field only when
they are changed to reduce the cache false-sharing.
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Wang Li <wangli39@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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