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| author | Eric Dumazet | 2005-09-28 00:23:16 +0200 |
|---|---|---|
| committer | David S. Miller | 2005-09-28 00:23:16 +0200 |
| commit | 9356b8fc07dc126cd91d2b12f314d760ab48996e (patch) | |
| tree | 908b193442d0e2ad345c05547d227809bc162a0a /net/socket.c | |
| parent | [NET]: Prefetch dev->qdisc_lock in dev_queue_xmit() (diff) | |
| download | kernel-qcow2-linux-9356b8fc07dc126cd91d2b12f314d760ab48996e.tar.gz kernel-qcow2-linux-9356b8fc07dc126cd91d2b12f314d760ab48996e.tar.xz kernel-qcow2-linux-9356b8fc07dc126cd91d2b12f314d760ab48996e.zip | |
[NET]: Reorder some hot fields of struct net_device
Place them on separate cache lines in SMP to lower memory bouncing
between multiple CPU accessing the device.
- One part is mostly used on receive path (including
eth_type_trans()) (poll_list, poll, quota, weight, last_rx,
dev_addr, broadcast)
- One part is mostly used on queue transmit path (qdisc)
(queue_lock, qdisc, qdisc_sleeping, qdisc_list, tx_queue_len)
- One part is mostly used on xmit path (device)
(xmit_lock, xmit_lock_owner, priv, hard_start_xmit, trans_start)
'features' is placed outside of these hot points, in a location that
may be shared by all cpus (because mostly read)
name_hlist is moved close to name[IFNAMSIZ] to speedup __dev_get_by_name()
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/socket.c')
0 files changed, 0 insertions, 0 deletions