diff options
| author | Eric Dumazet <dada1@cosmosbay.com> | 2008-11-26 04:08:18 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-26 04:08:18 -0500 |
| commit | 70355602879229c6f8bd694ec9c0814222bc4936 (patch) | |
| tree | c970f5b6134fac0c8da11f20ae364c92ae80a8ad /Documentation/basic_profiling.txt | |
| parent | dd24c00191d5e4a1ae896aafe33c6b8095ab4bd1 (diff) | |
net: release skb->dst in sock_queue_rcv_skb()
When queuing a skb to sk->sk_receive_queue, we can release its dst,
not anymore needed. Since current cpu did the dst_hold(), refcount is
probably still hot int this cpu caches.
This avoids readers to access the original dst to decrement its
refcount, possibly a long time after packet reception. This should
speedup UDP and RAW receive path.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/basic_profiling.txt')
0 files changed, 0 insertions, 0 deletions