linux-kernel - Re: NTP time sync

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Message-Id: <200611221155.26686.david-b@pacbell.net>
Date:	Wed, 22 Nov 2006 11:55:23 -0800
From:	David Brownell <david-b@...bell.net>
To:	Alessandro Zummo <alessandro.zummo@...ertech.it>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linuxppc-dev@...abs.org, Kumar Gala <galak@...nel.crashing.org>,
	Kim Phillips <kim.phillips@...escale.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Andi Kleen <ak@....de>, akpm@...l.org, davem@...emloft.net,
	kkojima@...iij4u.or.jp, lethal@...ux-sh.org, paulus@...ba.org,
	ralf@...ux-mips.org, rmk@....linux.org.uk
Subject: Re: NTP time sync

On Wednesday 22 November 2006 11:36 am, Alessandro Zummo wrote:
> 
>  wrto the in-kernel NTP synchronization,
>  as discussed before [1], my opinion
>  is that it should be done in userland.
> 
>  Keeping it in kernel implies subtle code
>  in each of the supported architectures.
> 
>  So, if the arch maintainers agree, 
>  I would suggest to schedule it for removal.
> 
> [1] http://lkml.org/lkml/2006/3/28/358

Suggested time of removal: one year after two relevant software
package releases get updated:

  - NTPD, to call hwclock specifying the relevant RTC;
  - util-linux, updating hwclock to know about /dev/rtcN;
  - busybox, with its own hwclock implementation.

The util-linux hwclock update is already in the queue, I'm told.

- Dave
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