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From: Sven Eckelmann <sven@narfation.org>
Date: Mon, 21 May 2018 19:51:49 +0200
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Subject: Re: [B.A.T.M.A.N.] [PATCH v2 6/7] batman-adv: ELP - use tp meter to
 estimate the throughput if otherwise not available
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Cc: Linus =?ISO-8859-1?Q?L=FCssing?= <linus.luessing@c0d3.blue>, Marek Lindner <mareklindner@neomailbox.ch>

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On Montag, 21. Mai 2018 15:17:11 CEST Linus L=FCssing wrote:
> What is the advantage of using the ilog2 and shift operator here
> compared to plain multiplications and divisions?

They most likely ran into the problem that they must do a 64 bit division=20
(which cannot be done on 32 bit machines in the kernel directly with C's=20
native "x / y" statement ). But in this case, it is most likely a lot bette=
r=20
to use do_div (or similar function) to avoid a lot of rounding problems whi=
ch=20
this shift approach has.

Kind regards,
	Sven
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