Date: Wed, 7 Jan 2009 10:52:01 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: David Newall <davidn@davidnewall.com>
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
Message-ID: <20090107105201.054c011f@lxorguk.ukuu.org.uk>
In-Reply-To: <49648163.9060007@davidnewall.com>
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	<alpine.DEB.1.10.0901040310070.24563@asgard.lang.hm>
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	<49614835.7000505@davidnewall.com>
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> 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.

The RTC stores the CMOS time in MM DD YY HH:MM:SS format. That conversion
is done kernel side when reading/writing the RTC chip. Thus if you are
using leap second timing your BIOS RTC values will not agree with the
expected value.

> 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.

Alan
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