From mboxrd@z Thu Jan  1 00:00:00 1970
From: linux@arm.linux.org.uk (Russell King - ARM Linux)
Date: Fri, 13 May 2011 22:15:12 +0100
Subject: [PATCH] ARM: twd: Adjust localtimer frequency withcpufreqnotifiers
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On Fri, May 13, 2011 at 12:59:20PM +0200, Linus Walleij wrote:
> This patch is interesting because it uses calc_mult_shift() and the current
> localtimer driver for TWD (arch/arm/kernel/smp_twd.c) still uses hardcoded
> mult+shift.

I don't think there's any reason it uses a hard coded shift, just
that's what was the norm when the code was originally written.  It
(and many other clock event code) probably could do with an update.