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Re: [RFC v4 22/22] timekeeping: inform clockevents about freq adjustments

From Thomas Gleixner <tglx@linutronix.de>
Newsgroups linux.kernel
Subject Re: [RFC v4 22/22] timekeeping: inform clockevents about freq adjustments
Date 2016-08-25 17:10 +0200
Message-ID <sa4s1-2F3-3@gated-at.bofh.it> (permalink)
References <s96YV-4v1-5@gated-at.bofh.it> <s96YW-4v1-37@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tue, 23 Aug 2016, Nicolai Stange wrote:
> Upon adjustments of the monotonic clock's frequencies from the
> timekeeping core, the clockevents devices' ->mult_adjusted should be
> changed accordingly, too.
> 
> Introduce clockevents_adjust_all_freqs() which traverses all registered
> clockevent devices and recalculates their ->mult_adjusted based on the
> monotonic clock's current frequency.

I'm not sure whether adjusting all devices is a good idea. We have systems
where the clockevent device is operated from a totally different crystal than
the clocksource device which is used for timekeeping. At least we want an
opt-out flag for this.
 
Thanks,

	tglx

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[RFC v4 22/22] timekeeping: inform clockevents about freq adjustments Nicolai Stange <nicstange@gmail.com> - 2016-08-23 01:40 +0200
  Re: [RFC v4 22/22] timekeeping: inform clockevents about freq adjustments Nicolai Stange <nicstange@gmail.com> - 2016-08-24 11:50 +0200
  Re: [RFC v4 22/22] timekeeping: inform clockevents about freq  adjustments Thomas Gleixner <tglx@linutronix.de> - 2016-08-25 17:10 +0200
  Re: [RFC v4 22/22] timekeeping: inform clockevents about freq  adjustments Thomas Gleixner <tglx@linutronix.de> - 2016-08-25 17:30 +0200

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