From mboxrd@z Thu Jan  1 00:00:00 1970
From: SF Markus Elfring <elfring@users.sourceforge.net>
Subject: Re: net-ipv6: Delete unnecessary checks before the function call
 "kfree_skb"
Date: Sun, 15 Nov 2015 07:17:46 +0100
Message-ID: <5648238A.20109@users.sourceforge.net>
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Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
	"David S. Miller" <davem@davemloft.net>,
	Hideaki Yoshfuji <yoshfuji@linux-ipv6.org>,
	James Morris <jmorris@namei.org>,
	Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>,
	Pablo Neira Ayuso <pablo@netfilter.org>,
	Patrick McHardy <kaber@trash.net>, netdev@vger.kernel.org,
	netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
	LKML <linux-kernel@vger.kernel.org>,
	kernel-janitors@vger.kernel.org,
	Julia Lawall <julia.lawall@lip6.fr>
To: Eric Dumazet <eric.dumazet@gmail.com>
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> While if the test is done in kfree_skb(), the branch predictor of the
> cpu wont be able to predict things.
> 
> By feeding too many NULL pointers to kfree_skb(), we slow down it.

Would it make sense to annotate checks before such function calls
as "UNLIKELY"?

Regards,
Markus