From: george anzinger <george@mvista.com>
To: Jonathan Briggs <zlynx@acm.org>
Cc: Linux kernel <linux-kernel@vger.kernel.org>
Subject: Re: Nasty suprise with uptime
Date: Tue, 30 Oct 2001 00:53:20 -0800 [thread overview]
Message-ID: <3BDE6A80.3A68A44E@mvista.com> (raw)
In-Reply-To: <E15yJD1-0003uO-00@the-village.bc.nu> <3BDDBE89.397E42C0@lexus.com> <20011029124753.F21285@one-eyed-alien.net> <4.3.2.7.2.20011029172525.00bb2270@mail.osagesoftware.com> <3BDDE642.8000901@acm.org>
Jonathan Briggs wrote:
>
> A 32 bit uptime patch should also include a new kernel parameter that
> could be passed from LILO: uptime. Then you could test the uptime patch
> by passing uptime=4294967295
>
> Or make /proc/uptime writable.
NO NO NO!
First uptime is a conversion of jiffies. Second, the POSIX standard
wants a CLOCK_MONOTONIC which, by definition, can not be set. Jiffies
is the most reasonable source for this clock. I am afraid you will have
to accumulate "real" time for uptime :)
George
>
> David Relson wrote:
>
> > Let's assume you have the counter changed to 32 bits - RIGHT NOW
> > (tm). Build a kernel, install it, reboot. It'll be over a year
> > (approx Jan 2003) before the change will be noticeable...
> >
> > Methinks that's a long time to wait for a result :-)
> >
> > David
> >
>
> -
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next prev parent reply other threads:[~2001-10-30 11:05 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-29 20:31 Nasty suprise with uptime J Sloan
2001-10-29 20:40 ` Alan Cox
2001-10-29 20:39 ` J Sloan
2001-10-29 20:47 ` Matthew Dharm
2001-10-29 20:52 ` J Sloan
2001-11-09 0:45 ` Dr. Kelsey Hudson
2001-10-29 21:26 ` David Relson
2001-10-29 23:29 ` Jonathan Briggs
2001-10-30 8:53 ` george anzinger [this message]
2001-10-30 13:50 ` Tim Walberg
2001-10-30 14:47 ` GOMBAS Gabor
2001-10-30 15:39 ` Tim Walberg
2001-10-30 16:18 ` GOMBAS Gabor
2001-10-30 22:53 ` Mike Castle
2001-10-30 8:20 ` george anzinger
2001-10-30 9:47 ` bert hubert
2001-10-30 10:37 ` Mike Fedyk
2001-10-30 15:56 ` Chris Meadors
2001-10-30 16:22 ` Laurent de Segur
2001-10-30 21:53 ` [OT] " J Sloan
2001-10-30 22:52 ` Jan Dvorak
2001-10-30 23:25 ` [OT] " J Sloan
2001-10-30 7:46 ` Neale Banks
2001-10-30 7:46 ` Mike Fedyk
2001-10-30 8:15 ` Ville Herva
2001-10-30 8:22 ` Ville Herva
2001-10-30 8:36 ` J. Dow
2001-10-30 9:33 ` Alan Cox
2001-10-30 16:25 ` Matt Bernstein
2001-10-30 19:43 ` Oden Eriksson
2001-10-29 23:10 ` Mike Fedyk
2001-10-29 23:20 ` J Sloan
2001-10-29 23:28 ` Mike Fedyk
2001-10-30 8:21 ` Ville Herva
2001-10-31 22:36 ` J Sloan
2001-11-01 0:49 ` Gerhard Mack
2001-10-30 8:49 ` george anzinger
2001-10-30 18:17 ` J Sloan
2001-10-30 9:06 ` Alan Cox
2001-10-30 19:19 ` J Sloan
-- strict thread matches above, loose matches on Subject: below --
2001-10-30 16:35 Jesse Pollard
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