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Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross timestamps infrastructure

From Richard Cochran <richardcochran@gmail.com>
Newsgroups linux.kernel
Subject Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross timestamps infrastructure
Date 2017-01-24 12:40 +0100
Message-ID <t37Ca-3I5-23@gated-at.bofh.it> (permalink)
References (2 earlier) <t1NYS-3rw-21@gated-at.bofh.it> <t2Naq-75i-17@gated-at.bofh.it> <t2RQK-1wu-25@gated-at.bofh.it> <t2SMN-26Q-7@gated-at.bofh.it> <t37st-3EK-7@gated-at.bofh.it>
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On Tue, Jan 24, 2017 at 09:23:29AM -0200, Marcelo Tosatti wrote:
> I'm resending v5 with native support for ->gettime and 
> ->getcrosststamps.

And can you please drop the "fake" PTP_SYS_OFFSET stuff?

Here is another reason why this is illogical.  The application can
choose how many samples to take during PTP_SYS_OFFSET.  It will choose
more samples if it wants a better picture of the offsets, but in that
case the "fake" samples would cause more computation in the kernel for
no added benefit.

Thanks,
Richard

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Thread

[patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross timestamps infrastructure Marcelo Tosatti <mtosatti@redhat.com> - 2017-01-20 13:30 +0100
  Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Paolo Bonzini <pbonzini@redhat.com> - 2017-01-20 14:10 +0100
    Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Marcelo Tosatti <mtosatti@redhat.com> - 2017-01-20 14:20 +0100
      Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Paolo Bonzini <pbonzini@redhat.com> - 2017-01-20 14:40 +0100
        Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Radim Krcmar <rkrcmar@redhat.com> - 2017-01-20 15:10 +0100
          Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Paolo Bonzini <pbonzini@redhat.com> - 2017-01-20 15:30 +0100
            Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Miroslav Lichvar <mlichvar@redhat.com> - 2017-01-20 15:40 +0100
            Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Radim Krcmar <rkrcmar@redhat.com> - 2017-01-20 19:40 +0100
        Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Marcelo Tosatti <mtosatti@redhat.com> - 2017-01-20 16:00 +0100
  Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Richard Cochran <richardcochran@gmail.com> - 2017-01-20 21:30 +0100
    Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Marcelo Tosatti <mtosatti@redhat.com> - 2017-01-23 14:50 +0100
      Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Richard Cochran <richardcochran@gmail.com> - 2017-01-23 19:50 +0100
        Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Paolo Bonzini <pbonzini@redhat.com> - 2017-01-23 20:50 +0100
          Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Richard Cochran <richardcochran@gmail.com> - 2017-01-24 06:50 +0100
          Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Marcelo Tosatti <mtosatti@redhat.com> - 2017-01-24 12:30 +0100
            Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Richard Cochran <richardcochran@gmail.com> - 2017-01-24 12:40 +0100
        Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Marcelo Tosatti <mtosatti@redhat.com> - 2017-01-24 00:10 +0100
          Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Richard Cochran <richardcochran@gmail.com> - 2017-01-24 06:40 +0100
            Re: [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross  timestamps infrastructure Miroslav Lichvar <mlichvar@redhat.com> - 2017-01-24 09:20 +0100

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