Re: [PATCH 0/3] timekeeping: Improved NOHZ frequency steering (v2)

From	Miroslav Lichvar <mlichvar@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 0/3] timekeeping: Improved NOHZ frequency steering (v2)
Date	2017-05-17 17:10 +0200
Message-ID	<tI8Kn-4GH-39@gated-at.bofh.it> (permalink)
References	(2 earlier) <njA0W-3hJ-21@gated-at.bofh.it> <nBBrA-Jq-13@gated-at.bofh.it> <nEoHw-7Id-9@gated-at.bofh.it> <tGkwh-6qS-1@gated-at.bofh.it> <tGmy6-7Uc-23@gated-at.bofh.it>
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On Fri, May 12, 2017 at 10:26:12AM -0700, John Stultz wrote:
> On Fri, May 12, 2017 at 8:14 AM, Miroslav Lichvar <mlichvar@redhat.com> wrote:
> > I see this with real PHCs and PTP/NTP synchronization too. It's very
> > confusing when the timekeeping changes so much for no apparent reason.
> > If we can't remove the old vsyscalls yet, I was thinking maybe a new
> > flag could be added to adjtimex to report the error, so applications
> > can at least detect this problem and consider stepping the clock in
> > order to reset the error?
> >
> > Thoughts?
> 
> I'd rather not have short-term hacks that applications have to adapt.
> So I think we should drop the old vsyscall method in the near term.
> Sorry this sort of fell off my radar.

Ok. Sounds good.

> Do you have an updated set of patches you want to get ready to address
> the issue? We can get those reviewed while we increase the pressure on
> dropping the OLD_VSYSCALL implementations.

I'll send an RFC series shortly.

Thanks,

-- 
Miroslav Lichvar

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Re: [PATCH 0/3] timekeeping: Improved NOHZ frequency steering (v2) Miroslav Lichvar <mlichvar@redhat.com> - 2017-05-12 17:20 +0200
  Re: [PATCH 0/3] timekeeping: Improved NOHZ frequency steering (v2) John Stultz <john.stultz@linaro.org> - 2017-05-12 19:30 +0200
    Re: [PATCH 0/3] timekeeping: Improved NOHZ frequency steering (v2) Miroslav Lichvar <mlichvar@redhat.com> - 2017-05-17 17:10 +0200

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