Messages in this thread | | | Date | Fri, 22 Jun 2018 23:28:10 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [PATCHv2] timekeeping: Update multiplier when NTP frequency is set directly |
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On Fri, 22 Jun 2018, John Stultz wrote: > On Fri, Jun 22, 2018 at 2:09 PM, Thomas Gleixner <tglx@linutronix.de> wrote: > > On Mon, 4 Jun 2018, Miroslav Lichvar wrote: > > > >> When the NTP frequency is set directly from userspace using the > >> ADJ_FREQUENCY or ADJ_TICK timex mode, immediately update the > >> timekeeper's multiplier instead of waiting for the next tick. > >> > >> This removes a hidden non-deterministic delay in setting of the > >> frequency and allows an extremely tight control of the system clock > >> with update rates close to or even exceeding the kernel HZ. > >> > >> The update is limited to archs using modern timekeeping > >> (!ARCH_USES_GETTIMEOFFSET). > > > > John ????? > > Yea. I've got this in my toqueue list. I'm going to take another pass > at testing and hopefully send it your way.
No hurry. I just wanted to make sure that it didn't fall through the cracks.
Thanks,
tglx
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