From: David Newall <davidn@davidnewall.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Nick Andrew <nick@nick-andrew.net>,
Linas Vepstas <linasvepstas@gmail.com>,
david@lang.hm, Kyle Moffett <kyle@moffetthome.net>,
Ben Goodger <goodgerster@gmail.com>,
Robert Hancock <hancockr@shaw.ca>,
linux-kernel@vger.kernel.org,
"Jeffrey J. Kosowsky" <jeff@kosowsky.org>,
MentalMooMan <slashdot@jameshallam.info>,
Travis Crump <pretzalz@techhouse.org>,
burdell@iruntheinter.net
Subject: Re: Bug: Status/Summary of slashdot leap-second crash on new years 2008-2009
Date: Thu, 08 Jan 2009 00:15:47 +1030 [thread overview]
Message-ID: <4964B20B.4030406@davidnewall.com> (raw)
In-Reply-To: <20090107105201.054c011f@lxorguk.ukuu.org.uk>
Alan Cox wrote:
>> True but irrelevant because the RTC returns a timestamp. And it's
>> quietly understood that the RTC is only an approximation.
>>
>
> You miss the point.
>
No, I got the point. I see no problem.
> The RTC stores the CMOS time in MM DD YY HH:MM:SS format.
Yes, which is perfect for mktime(), which knows about leap seconds and
so produces the correct time_t.
>> However it is now clear that no special kernel support is required for
>> leap-seconds, and any such code that's been incorporated needs to be
>> removed. Removed I say!
>>
>
> There never has been any. Its all handled (both posix and sane) by glibc.
Which is what one would expect. It's reports of crashes and kernel bugs
being found and fixed in code to handle leap seconds which lead me to a
different understanding. I thought it was said that there's kernel
support to handle the leap second flag in NTP's broadcasts, and that
that was where the bug was.
So. What is the situation?
next prev parent reply other threads:[~2009-01-07 13:46 UTC|newest]
Thread overview: 109+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-02 19:25 Bug: Status/Summary of slashdot leap-second crash on new years 2008-2009 Linas Vepstas
2009-01-02 20:04 ` Diego Calleja
2009-01-02 20:25 ` Robert Hancock
2009-01-03 6:32 ` David Newall
2009-01-03 6:37 ` Ben Goodger
2009-01-04 8:43 ` David Newall
2009-01-04 9:00 ` Kyle Moffett
2009-01-04 10:03 ` David Newall
2009-01-04 11:13 ` david
2009-01-04 23:15 ` David Newall
2009-01-04 23:25 ` Chris Adams
2009-01-05 0:01 ` David Newall
2009-01-05 0:41 ` Alan Cox
2009-01-05 8:43 ` David Newall
2009-01-05 19:47 ` Alan Cox
2009-01-05 0:29 ` david
2009-01-04 23:37 ` David Newall
2009-01-05 1:05 ` david
2009-01-05 0:14 ` David Newall
2009-01-05 0:21 ` Ben Goodger
2009-01-05 6:34 ` David Newall
2009-01-05 23:03 ` Linas Vepstas
2009-01-05 0:44 ` Alan Cox
2009-01-05 5:48 ` Linas Vepstas
2009-01-05 14:33 ` Nick Andrew
2009-01-05 16:08 ` Linas Vepstas
2009-01-05 17:51 ` david
2009-01-05 17:42 ` Linas Vepstas
2009-01-06 2:27 ` john stultz-lkml
2009-01-06 4:53 ` Linas Vepstas
2009-01-06 5:00 ` Linas Vepstas
2009-01-06 19:40 ` [ntpwg] " M. Warner Losh
2009-01-06 19:50 ` M. Warner Losh
2009-01-07 3:50 ` Danny Mayer
2009-01-07 4:52 ` Linas Vepstas
2009-01-07 10:03 ` David Newall
2009-01-07 17:24 ` M. Warner Losh
2009-01-08 16:51 ` Magnus Danielson
2009-01-07 14:34 ` Danny Mayer
2009-01-07 15:42 ` Linas Vepstas
2009-01-07 19:23 ` Danny Mayer
2009-01-07 16:04 ` john stultz
2009-01-07 17:36 ` M. Warner Losh
2009-01-07 17:39 ` M. Warner Losh
2009-01-07 19:31 ` Alan Cox
2009-01-07 19:42 ` M. Warner Losh
2009-01-08 3:57 ` Danny Mayer
2009-01-08 4:42 ` M. Warner Losh
2009-01-08 10:48 ` Alan Cox
2009-01-08 10:56 ` Alan Cox
2009-01-08 22:22 ` David Mills
2009-01-08 15:02 ` M. Warner Losh
2009-01-08 18:57 ` Marshall Eubanks
2009-01-08 20:09 ` Steve Allen
2009-01-12 16:11 ` Pavel Machek
2009-01-12 17:07 ` [ntpwg] " M. Warner Losh
2009-01-12 21:45 ` Valdis.Kletnieks
2009-01-06 2:31 ` Nick Andrew
2009-01-06 1:59 ` David Newall
2009-01-06 2:18 ` Chris Adams
2009-01-06 2:51 ` Nick Andrew
2009-01-06 9:40 ` Alan Cox
2009-01-07 1:17 ` Nick Andrew
2009-01-07 9:37 ` Alan Cox
2009-01-07 9:46 ` David Newall
2009-01-07 9:54 ` Alan Cox
2009-01-07 10:18 ` David Newall
2009-01-07 10:52 ` Alan Cox
2009-01-07 13:45 ` David Newall [this message]
2009-01-07 14:10 ` Alan Cox
2009-01-07 14:36 ` David Newall
2009-01-07 15:40 ` Alan Cox
2009-01-10 9:46 ` David Newall
2009-01-07 22:13 ` Chris Adams
2009-01-07 13:33 ` Chris Adams
2009-01-07 13:37 ` Alan Cox
2009-01-07 14:12 ` David Newall
2009-01-07 14:09 ` David Newall
2009-01-07 21:42 ` Chris Adams
2009-01-04 11:35 ` Valdis.Kletnieks
2009-01-05 0:08 ` David Newall
2009-01-06 3:53 ` Valdis.Kletnieks
2009-01-04 17:20 ` Kyle Moffett
2009-01-03 7:00 ` Chris Adams
2009-01-04 8:41 ` David Newall
2009-01-02 20:29 ` Linas Vepstas
[not found] ` <8752a8760901021328t545a0327v58faebe1e921680a@mail.gmail.com>
2009-01-02 21:29 ` Ben Goodger
2009-01-03 0:21 ` Chris Adams
2009-01-03 2:23 ` Duane Griffin
2009-01-03 3:45 ` Linas Vepstas
2009-01-03 4:41 ` [PATCH] " Chris Adams
2009-01-03 4:52 ` Duane Griffin
2009-01-03 18:01 ` [PATCH] v2 " Chris Adams
2009-01-03 19:04 ` Duane Griffin
2009-01-03 20:01 ` Linas Vepstas
2009-06-08 2:18 ` Ben Hutchings
2009-06-18 22:34 ` Chris Friesen
2009-06-18 22:58 ` Ben Hutchings
2009-06-18 23:48 ` Chris Friesen
2009-01-06 2:21 ` john stultz-lkml
2009-01-06 2:25 ` Chris Adams
2009-01-06 4:35 ` Linas Vepstas
2009-01-03 3:49 ` Linas Vepstas
2009-01-03 4:02 ` Ben Goodger
2009-01-03 4:46 ` Duane Griffin
2009-01-03 4:50 ` Ben Goodger
2009-01-03 22:58 ` Jeffrey J. Kosowsky
[not found] <fa.dw2l5ZM+UL3xoF6IYh5RLMmbYfw@ifi.uio.no>
[not found] ` <fa.XOM1F85uBvmj4QzZKaDu36nYBk0@ifi.uio.no>
[not found] ` <fa.rviZJBmVqkAE5uxDjhJOpIuKT4g@ifi.uio.no>
[not found] ` <fa.OPVERUiJ763jH2/QynTxgBgoKYw@ifi.uio.no>
[not found] ` <fa.v3FUjJ43bw2G7KiZGaxqL3tD4xo@ifi.uio.no>
[not found] ` <fa.BrNhgY8S+TEOLMiPd27M7YHo9bI@ifi.uio.no>
2009-01-04 16:15 ` Sitsofe Wheeler
2009-01-04 17:26 ` Kyle Moffett
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