2005-04-16 15:20:36 -07:00
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2005-05-05 16:16:16 -07:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:44 +09:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:44 +09:00
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2005-04-16 15:20:36 -07:00
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2006-01-05 16:35:42 -08:00
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2005-04-16 15:20:36 -07:00
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2008-10-07 13:45:02 +00:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2009-12-26 11:50:59 +00:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2009-12-26 11:50:59 +00:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-06-28 15:49:06 -07:00
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2007-08-24 22:35:44 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2007-08-24 22:35:44 -07:00
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2006-02-23 16:18:01 -08:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2007-08-24 22:35:44 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2008-09-20 22:20:49 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2010-04-20 21:06:07 +00:00
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2006-08-17 18:20:18 -07:00
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2007-08-24 22:35:44 -07:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2005-04-16 15:20:36 -07:00
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2005-07-12 12:08:43 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2007-04-25 17:40:23 -07:00
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2007-03-19 15:30:44 -07:00
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2010-05-02 02:21:44 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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eth: Declare an optimized compare_ether_addr_64bits() function
Linus mentioned we could try to perform long word operations, even
on potentially unaligned addresses, on x86 at least. David mentioned
the HAVE_EFFICIENT_UNALIGNED_ACCESS test to handle this on all
arches that have efficient unailgned accesses.
I tried this idea and got nice assembly on 32 bits:
158: 33 82 38 01 00 00 xor 0x138(%edx),%eax
15e: 33 8a 34 01 00 00 xor 0x134(%edx),%ecx
164: c1 e0 10 shl $0x10,%eax
167: 09 c1 or %eax,%ecx
169: 74 0b je 176 <eth_type_trans+0x87>
And very nice assembly on 64 bits of course (one xor, one shl)
Nice oprofile improvement in eth_type_trans(), 0.17 % instead of 0.41 %,
expected since we remove 8 instructions on a fast path.
This patch implements a compare_ether_addr_64bits() function, that
uses the CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS ifdef to efficiently
perform the 6 bytes comparison on all capable arches.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-23 23:24:32 -08:00
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2005-09-27 16:03:05 -07:00
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2005-04-16 15:20:36 -07:00
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2005-09-27 16:03:05 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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eth: Declare an optimized compare_ether_addr_64bits() function
Linus mentioned we could try to perform long word operations, even
on potentially unaligned addresses, on x86 at least. David mentioned
the HAVE_EFFICIENT_UNALIGNED_ACCESS test to handle this on all
arches that have efficient unailgned accesses.
I tried this idea and got nice assembly on 32 bits:
158: 33 82 38 01 00 00 xor 0x138(%edx),%eax
15e: 33 8a 34 01 00 00 xor 0x134(%edx),%ecx
164: c1 e0 10 shl $0x10,%eax
167: 09 c1 or %eax,%ecx
169: 74 0b je 176 <eth_type_trans+0x87>
And very nice assembly on 64 bits of course (one xor, one shl)
Nice oprofile improvement in eth_type_trans(), 0.17 % instead of 0.41 %,
expected since we remove 8 instructions on a fast path.
This patch implements a compare_ether_addr_64bits() function, that
uses the CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS ifdef to efficiently
perform the 6 bytes comparison on all capable arches.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-23 23:24:32 -08:00
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2005-09-27 16:03:05 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2008-10-07 13:45:02 +00:00
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2008-10-07 13:46:07 +00:00
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2008-10-07 13:45:02 +00:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2010-06-10 23:31:35 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2007-09-26 22:13:38 -07:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-09-28 14:20:34 -07:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2007-03-07 14:19:03 +09:00
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2005-04-16 15:20:36 -07:00
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2007-08-24 22:35:44 -07:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2007-08-24 22:35:44 -07:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2008-11-19 22:42:31 -08:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:20:18 -07:00
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2007-07-11 19:41:18 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-11 19:41:18 -07:00
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2007-08-24 22:35:44 -07:00
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2005-04-16 15:20:36 -07:00
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2008-11-19 22:42:31 -08:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2008-11-19 22:42:31 -08:00
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2005-04-16 15:20:36 -07:00
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2006-01-05 16:35:42 -08:00
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2005-04-16 15:20:36 -07:00
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2008-11-19 22:42:31 -08:00
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2005-04-16 15:20:36 -07:00
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2008-11-19 22:42:31 -08:00
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2007-10-23 20:19:37 -07:00
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2008-04-13 22:45:40 -07:00
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2007-10-23 20:19:37 -07:00
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2008-11-19 22:42:31 -08:00
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2007-10-23 20:19:37 -07:00
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2007-10-09 01:40:57 -07:00
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2006-08-17 18:18:53 -07:00
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2005-04-16 15:20:36 -07:00
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2007-10-09 01:40:57 -07:00
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2005-04-16 15:20:36 -07:00
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2006-01-05 16:35:42 -08:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:44 +09:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:44 +09:00
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2006-08-17 18:20:18 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-06 13:36:20 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2007-07-06 13:36:20 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-17 18:18:53 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-06 13:36:20 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-06 13:36:20 -07:00
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2005-04-16 15:20:36 -07:00
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2007-07-06 13:36:20 -07:00
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2007-10-03 17:59:30 -07:00
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2007-12-24 21:28:09 -08:00
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2007-10-03 17:59:30 -07:00
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2007-12-24 21:28:09 -08:00
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