From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jarek Poplawski <jarkao2@gmail.com>
Cc: David Miller <davem@davemloft.net>, netdev@vger.kernel.org
Subject: Re: [PATCH net-next-2.6] net: pskb_expand_head() optimization
Date: Mon, 20 Sep 2010 14:40:42 +0200 [thread overview]
Message-ID: <1284986442.3420.307.camel@edumazet-laptop> (raw)
In-Reply-To: <20100920121232.GA9931@ff.dom.local>
Le lundi 20 septembre 2010 à 12:12 +0000, Jarek Poplawski a écrit :
> Hmm... I probably misread your reasoning. So, if no real reason,
> really, how about turning this NET_SKBUFF_DATA_USES_OFFSET on
> unconditionally in net-next, until somebody spots the difference?
Yes, but most developpers use 64bit kernels anyway, I suspect nobody
will ever notice :(
Here (with a typical config), here is the vmlinux size before and after
this patch :
$ size vmlinux.old
text data bss dec hex filename
6061748 640208 7285056 13987012 d56cc4 vmlinux.old
$ size vmlinux
text data bss dec hex filename
6070420 640208 7285056 13995684 d58ea4 vmlinux
Thats 8672 bytes of text increase.
(1330326 instructions instead of 1328472 -> 1854 more instructions)
next prev parent reply other threads:[~2010-09-20 12:40 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-03 3:43 [PATCH] net: Frag list lost on head expansion David Miller
2010-09-03 5:48 ` Eric Dumazet
2010-09-03 6:19 ` Eric Dumazet
2010-09-03 9:09 ` [PATCH net-next-2.6] net: pskb_expand_head() optimization Eric Dumazet
2010-09-03 13:46 ` David Miller
2010-09-07 2:20 ` David Miller
2010-09-07 5:02 ` Eric Dumazet
2010-09-07 5:05 ` David Miller
2010-09-07 9:16 ` Jarek Poplawski
2010-09-07 9:37 ` Eric Dumazet
2010-09-10 19:54 ` David Miller
2010-09-11 12:31 ` Jarek Poplawski
2010-09-12 3:30 ` David Miller
2010-09-12 10:45 ` Jarek Poplawski
2010-09-12 10:58 ` Jarek Poplawski
2010-09-12 15:58 ` David Miller
2010-09-12 16:13 ` David Miller
2010-09-12 20:57 ` Jarek Poplawski
2010-09-12 22:08 ` David Miller
2010-09-13 7:49 ` Jarek Poplawski
2010-09-12 19:55 ` Ben Pfaff
2010-09-12 20:24 ` David Miller
2010-09-12 20:45 ` Jarek Poplawski
2010-09-20 0:17 ` David Miller
2010-09-20 7:21 ` Jarek Poplawski
2010-09-20 9:02 ` Eric Dumazet
2010-09-20 9:14 ` Jarek Poplawski
2010-09-20 12:12 ` Jarek Poplawski
2010-09-20 12:40 ` Eric Dumazet [this message]
2010-09-20 16:59 ` David Miller
2010-09-07 1:25 ` David Miller
-- strict thread matches above, loose matches on Subject: below --
2010-07-22 19:12 [PATCH] Fix corruption of skb csum field in pskb_expand_head() of net/core/skbuff.c Andrea Shepard
2010-07-23 5:09 ` [PATCH net-next-2.6] net: pskb_expand_head() optimization Eric Dumazet
2010-07-25 4:06 ` David Miller
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