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Date: Sat, 03 Jan 2004 13:16:17 -0500
From: Bill Davidsen <davidsen@tmr.com>
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To: Jean-Marc Valin <Jean-Marc.Valin@USherbrooke.ca>
CC: Pavel Machek <pavel@ucw.cz>, "Martin J. Bligh" <mbligh@aracnet.com>,
       Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: Increasing HZ (patch for HZ > 1000)
References: <20031212221045.GB314@elf.ucw.cz> <1071269429.4182.6.camel@idefix.homelinux.org>
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Jean-Marc Valin wrote:

> Actually, the way I rewrote it in the patch is immune to that kind of
> problem:
> 
> seq_printf(m, "\nbogomips\t: %lu.%02lu\n\n",
>            HZ*(c->loops_per_jiffy>>3)/62500,
>            (HZ*(c->loops_per_jiffy>>3)/625)%100);
> 
> It will work correctly for any HZ up to ~34000 bogomips (using 32-bit
> arithmetic).

I think it's likely any CPU with 34000 bogomips will have more than 32 
bit ;-)

-- 
bill davidsen <davidsen@tmr.com>
   CTO TMR Associates, Inc
   Doing interesting things with small computers since 1979