netdev - Re: [PATCH net-next] net: ipv4: optimize tkey

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Message-Id: <20120828.145612.2276726060621764585.davem@davemloft.net>
Date:	Tue, 28 Aug 2012 14:56:12 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	igorm@....rs
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net-next] net: ipv4: optimize tkey_mismatch

From: igorm@....rs
Date: Tue, 28 Aug 2012 10:52:18 +0200

> From: Igor Maravic <igorm@....rs>
> 
> Optimize tkey_mismatch function by using __fls function.
> 
> Signed-off-by: Igor Maravic <igorm@....rs>

This will actually run slower on architectures like sparc that
don't have special instructions for __fls.

Your TOS "optimization" isn't very useful either since having
TOS routes is very rare.
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