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Date:   Mon, 11 Jan 2010 11:20:23 +0100
From:   Ralf Baechle <ralf@linux-mips.org>
To:     David Daney <ddaney@caviumnetworks.com>
Cc:     linux-mips@linux-mips.org
Subject: Re: [PATCH] MIPS: Octeon: Use non-overflowing arithmetic in
 sched_clock
Message-ID: <20100111102023.GE13886@linux-mips.org>
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On Fri, Jan 08, 2010 at 02:47:36PM -0800, David Daney wrote:

> With typical mult and shift values, the calculation for Octeon's
> sched_clock overflows when using 64-bit arithmetic.  Use 128-bit
> calculations instead.

Applied though my first thought whenever I see extended precission math
is gross - maybe we're going to find a better solution.  Hopefully!

  Ralf