linux-kernel - Re: gtod/clocksource/clockevents documentation

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Date:	Mon, 23 Apr 2007 13:44:23 +0200
From:	Nicolas Ferre <nicolas.ferre@....atmel.com>
To:	linux@...mer.net
CC:	Andrew Victor <andrew@...people.com>,
	David Brownell <david-b@...bell.net>,
	linux-kernel@...r.kernel.org
Subject: Re: gtod/clocksource/clockevents documentation

Remy Bohmer :
> Hello All,
> 
> I need to implement a gtod/clocksource/clockevents implementation for
> the Atmel ARM AT91SAM9261 CPU, and I am looking for some kernel
> (interface) documentation about these mechanisms.

[..]

> I hacked something which now makes the RT kernel to boot, but the
> time-of-day warps several minutes per second, back and forward in
> time... ;-)

I recall there is a patch by Michel Benoit that solves some issues on 
gettimeoffset()/gettimeofday(). It is in the ARM patch queue here :
http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=4149/1
and will be included in the upcoming kernel.

Hope that it addresses this problem and that it will help you.

Regards,
-- 
Nicolas Ferre


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