Benjamin LaHaise 4947d3ef8d
[NET]: Speed up __alloc_skb() ...
From: Benjamin LaHaise <bcrl@kvack.org >
In __alloc_skb(), the use of skb_shinfo() which casts a u8 * to the
shared info structure results in gcc being forced to do a reload of the
pointer since it has no information on possible aliasing. Fix this by
using a pointer to refer to skb_shared_info.
By initializing skb_shared_info sequentially, the write combining buffers
can reduce the number of memory transactions to a single write. Reorder
the initialization in __alloc_skb() to match the structure definition.
There is also an alignment issue on 64 bit systems with skb_shared_info
by converting nr_frags to a short everything packs up nicely.
Also, pass the slab cache pointer according to the fclone flag instead
of using two almost identical function calls.
This raises bw_unix performance up to a peak of 707KB/s when combined
with the spinlock patch. It should help other networking protocols, too.
Signed-off-by: David S. Miller <davem@davemloft.net >
2006-01-03 14:06:50 -08:00
2005-12-12 08:57:44 -08:00
2005-11-28 21:00:29 +00:00
2005-12-18 16:28:24 -08:00
2005-11-14 15:24:59 -08:00
2005-11-20 21:11:31 -08:00
2005-11-07 07:53:48 -08:00
2005-11-09 07:56:40 -08:00
2005-11-07 07:53:48 -08:00
2005-11-13 18:14:17 -08:00
2005-11-13 18:14:16 -08:00
2005-11-29 16:16:41 -08:00
2006-01-03 13:11:06 -08:00
2005-11-12 10:56:06 +01:00
2005-12-16 10:52:46 -08:00
2005-11-18 22:00:17 +01:00
2005-11-13 18:14:10 -08:00
2005-12-12 08:57:42 -08:00
2005-11-16 00:52:57 -08:00
2005-11-10 15:33:38 -08:00
2005-11-07 07:53:52 -08:00
2005-11-28 14:42:23 -08:00
2005-11-07 18:18:11 -08:00
2006-01-03 13:11:21 -08:00
2005-11-17 16:23:43 +00:00
2005-11-17 16:23:42 +00:00
2005-12-12 22:31:17 -08:00
2005-11-13 18:14:10 -08:00
2005-11-12 10:14:02 -08:00
2005-11-09 07:55:57 -08:00
2005-11-09 07:55:59 -08:00
2005-11-13 18:14:10 -08:00
2005-11-07 07:53:42 -08:00
2005-11-10 02:26:41 +01:00
2005-11-12 10:55:21 +01:00
2005-11-22 19:39:30 -08:00
2005-11-13 18:14:13 -08:00
2005-11-19 22:17:55 +01:00
2005-11-13 18:14:12 -08:00
2005-12-12 08:57:45 -08:00
2005-12-15 02:20:15 +01:00
2005-11-08 17:14:08 +01:00
2005-11-10 13:03:08 -08:00
2005-11-08 09:40:47 -08:00
2006-01-03 13:11:23 -08:00
2005-11-09 07:55:57 -08:00
2005-11-13 18:14:16 -08:00
2005-12-12 08:57:43 -08:00
2005-11-13 18:14:13 -08:00
2005-11-07 07:54:07 -08:00
2006-01-03 13:11:21 -08:00
2005-11-07 07:53:43 -08:00
2005-12-21 22:56:42 +09:00
2006-01-03 13:11:21 -08:00
2005-12-21 14:45:25 -08:00
2005-11-09 07:55:57 -08:00
2005-11-22 21:58:37 -08:00
2005-11-07 14:18:56 +01:00
2005-11-07 14:18:56 +01:00
2005-11-07 14:18:56 +01:00
2005-11-07 07:53:37 -08:00
2005-11-07 07:54:08 -08:00
2005-12-12 08:57:45 -08:00
2005-12-13 02:29:45 -05:00
2005-12-12 08:57:43 -08:00
2005-11-28 14:42:23 -08:00
2005-12-16 10:21:23 -08:00
2005-11-22 19:39:30 -08:00
2005-11-07 18:18:11 -08:00
2005-12-24 15:37:00 -08:00
2005-11-09 07:56:00 -08:00
2005-11-07 18:18:10 -08:00
2006-01-03 13:11:15 -08:00
2005-11-10 13:01:24 -08:00
2005-11-09 16:38:16 -08:00
2005-11-10 02:26:40 +01:00
2005-12-19 23:12:09 -05:00
2005-11-22 09:13:42 -08:00
2005-11-13 18:14:12 -08:00
2005-12-12 08:57:45 -08:00
2005-12-15 02:11:55 +01:00
2005-11-10 16:09:15 -08:00
2005-11-10 16:09:17 -08:00
2005-11-13 18:14:15 -08:00
2006-01-03 13:10:24 -08:00
2005-11-09 07:55:57 -08:00
2006-01-03 13:11:05 -08:00
2005-11-09 17:23:39 +00:00
2005-11-13 18:14:10 -08:00
2005-11-13 18:14:10 -08:00
2005-11-07 07:54:09 -08:00
2005-11-08 09:40:47 -08:00
2005-12-22 09:17:39 -08:00
2005-11-08 17:57:30 -08:00
2005-11-07 07:53:42 -08:00
2005-11-07 18:18:09 -08:00
2005-11-07 07:53:39 -08:00
2005-11-07 07:53:37 -08:00
2005-11-06 12:32:31 -06:00
2006-01-03 13:10:56 -08:00
2005-12-12 08:57:42 -08:00
2005-12-20 17:33:22 -08:00
2005-11-07 07:53:47 -08:00
2005-11-07 07:53:46 -08:00
2005-11-07 07:53:46 -08:00
2005-11-07 07:53:47 -08:00
2005-11-28 14:42:25 -08:00
2005-11-07 14:25:38 +01:00
2005-12-19 13:54:44 -08:00
2005-11-28 14:42:23 -08:00
2006-01-03 13:10:24 -08:00
2005-11-07 07:53:41 -08:00
2005-11-28 18:09:44 +00:00
2005-11-07 07:53:37 -08:00
2006-01-03 14:06:50 -08:00
2005-11-07 07:53:24 -08:00
2005-11-13 18:14:13 -08:00
2005-11-23 08:44:05 -08:00
2006-01-03 13:11:14 -08:00
2005-11-09 07:55:57 -08:00
2005-11-07 07:53:28 -08:00
2005-11-28 14:42:25 -08:00
2006-01-03 13:10:31 -08:00
2006-01-03 13:10:58 -08:00
2005-11-13 18:14:14 -08:00
2005-12-12 08:57:42 -08:00
2006-01-03 13:11:21 -08:00
2005-11-20 00:51:33 -05:00
2005-11-23 23:04:28 -08:00
2005-11-13 18:14:18 -08:00
2005-11-09 07:56:23 -08:00
2005-11-07 07:53:41 -08:00
2006-01-03 13:10:24 -08:00
4947d3ef8d