Re: question about linux time change

Chris Friesen
2004-10-13T00:35:20Z

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