Re: question about linux time change

[Chris Friesen]

George Anzinger wrote:
> Chris Friesen wrote:
>
> > I have been asked to add the ability to notify userspace when the time 
> > of day changes.  The actual notification is the easy part.  I'm having 
> > issues with where exactly the time is really changed.
>
>
> Just what sort of time changes do you want to notify on?  The ntp code 
> "drifts" time a lot.  Do you want to know about this?  If it is only 
> cases where there is a jump in time, you might do well to look at 
> "clock_was_set()".  It is in kernel/posix-timers.c and is called when 
> ever do_settimeofday() is called AND on leap second calls.
>
> You will even find code in there to push the ladder out of the softirq 
> context.


Cool.  Will do.

Chris
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