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Date: Sun, 10 Nov 2002 17:30:12 +0100
From: Pavel Machek <pavel@ucw.cz>
To: Linus Torvalds <torvalds@transmeta.com>, vojtech@ucw.cz
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
       "J.E.J. Bottomley" <James.Bottomley@HansenPartnership.com>,
       john stultz <johnstul@us.ibm.com>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: Voyager subarchitecture for 2.5.46
Message-ID: <20021110163012.GB1564@elf.ucw.cz>
References: <1036599549.9803.49.camel@irongate.swansea.linux.org.uk> <Pine.LNX.4.44.0211060758440.2545-100000@home.transmeta.com>
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Hi!

>  - when the next gettimeofday happens, we can check the sequence number 
>    and the old gettimeofday, and verify that we get monotonic behaviour in 
>    the absense of explicit date setting. This allows us to handle small 
>    problems gracefully ("return the old time + 1 ns" to make it 
>    monotonic even when we screw up), _and_ it will also act as a big clue
>    for us that we should try to synchronize - so that we basically never 
>    need to worry about "should I check the clocks" (where "basically 
>    never" may be "we check the clocks every minute or so if nothing else 
>    happens")

Unfortunately, this means "bye bye vsyscalls for gettimeofday".

								Pavel
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