Re: [RFC PATCH] hwclock: --offset: Use offset instead of writing clock

[JWP <elseifthen@gmx.com>]

On 10/07/2014 08:48 AM, Noé RUBINSTEIN wrote:
>> Sure, hwclock already has the ability to track the offset between the
>> Hardware Clock and the System Clock(which presumably is the 'correct' time).
> ...but this information is recorded only when setting the hardware
> clock, which is impossible on some (arguably buggy) targets.

I would think we should fix that. What hardware is it that hwclock cannot
set the Hardware Clock?

> 
>> With my patch, hctosys will include the offset when setting the System
>> Clock. Which is the functionality you want, right?
> Nearly.
> 
> I guess in order for the use-case I want to be possible we would need
> an option for --systohc/--set to modify the adjtime file, but not to
> touch the hardware clock.

Well, we could (re)calculate the drift factor even if setting the Hardware
Clock fails, or have an option to (re)calculate without setting the HW Clock.
I am willing to write such a patch if Mr. Zak approves.


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