Re: [PATCH RFC 0/3] Improve stability of system clock

From	Miroslav Lichvar <mlichvar@redhat.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH RFC 0/3] Improve stability of system clock
Date	2017-05-17 19:30 +0200
Message-ID	<tIaVQ-5Z9-3@gated-at.bofh.it> (permalink)
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On Wed, May 17, 2017 at 10:02:00AM -0700, John Stultz wrote:
> On Wed, May 17, 2017 at 9:57 AM, Miroslav Lichvar <mlichvar@redhat.com> wrote:
> > On Wed, May 17, 2017 at 09:30:31AM -0700, John Stultz wrote:
> >> Could you submit your linux-tktest infrastructure to the kselftests dir?
> >
> > I can, but it's a mess that breaks frequently as the timekeeping and
> > other kernel code changes. Are you sure you want that in the kernel
> > tree? :)
> 
> Being a mess is a slight concern, but as for breaking, if its
> in-kernel, then folks can't make changes that break it, right?

It duplicates/stubs quite a few kernel functions that are needed to
compile and link the timekeeping.c file into an executable. See
linux-tktest/missing.c. If their signature changes, or new functions
are needed, it will break.

Is there a better way to run the timekeeping code in an userspace
application? I suspect it would need something like the Linux Kernel
Library project.

-- 
Miroslav Lichvar

Thread

[PATCH RFC 0/3] Improve stability of system clock Miroslav Lichvar <mlichvar@redhat.com> - 2017-05-17 18:20 +0200
  [PATCH RFC 1/3] timekeeping: Remove support for old vsyscalls Miroslav Lichvar <mlichvar@redhat.com> - 2017-05-17 18:20 +0200
  [PATCH RFC 2/3] timekeeping: Don't align frequency adjustments to ticks Miroslav Lichvar <mlichvar@redhat.com> - 2017-05-17 18:20 +0200
  Re: [PATCH RFC 0/3] Improve stability of system clock John Stultz <john.stultz@linaro.org> - 2017-05-17 18:40 +0200
    Re: [PATCH RFC 0/3] Improve stability of system clock John Stultz <john.stultz@linaro.org> - 2017-05-17 19:10 +0200
      Re: [PATCH RFC 0/3] Improve stability of system clock Miroslav Lichvar <mlichvar@redhat.com> - 2017-05-17 19:30 +0200
        Re: [PATCH RFC 0/3] Improve stability of system clock John Stultz <john.stultz@linaro.org> - 2017-05-18 01:10 +0200
          Re: [PATCH RFC 0/3] Improve stability of system clock Richard Cochran <richardcochran@gmail.com> - 2017-05-18 07:00 +0200
            Re: [PATCH RFC 0/3] Improve stability of system clock John Stultz <john.stultz@linaro.org> - 2017-05-20 02:40 +0200
              Re: [PATCH RFC 0/3] Improve stability of system clock Rusty Russell <rusty@rustcorp.com.au> - 2017-05-22 02:40 +0200
    Re: [PATCH RFC 0/3] Improve stability of system clock Miroslav Lichvar <mlichvar@redhat.com> - 2017-05-17 19:10 +0200

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