From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH v2 net-next] net: use jump_label to shortcut RPS if not
 setup
Date: Thu, 17 Nov 2011 23:19:16 +0100
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To: David Miller <davem@davemloft.net>
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Le jeudi 17 novembre 2011 =C3=A0 17:04 -0500, David Miller a =C3=A9crit=
 :
> From: Eric Dumazet <eric.dumazet@gmail.com>
> Date: Thu, 17 Nov 2011 22:34:49 +0100
>=20
> > I wonder if we could use this jump_label infrastructure to shortcut
> > expensive netfilter nf_hook_slow() / nf_iterate on empty
> > tables/chains...
>=20
> That would be nice, I can't see why it wouldn't be possible.

Almost done :)

Only problem is arch_static_branch() has a "i" (key), so some calls won=
t
be optimized (hooknum in a variable, not a constant)

for example in nf_ct_frag6_output()

Not a big deal, most calls can be optimized away.