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    SubjectRe: [PATCH 1/1] ntp: advertise correct TAI offset during leap second
    On Tue, May 01, 2012 at 08:16:05AM +0200, Richard Cochran wrote:
    > On Mon, Apr 30, 2012 at 12:48:22PM -0700, John Stultz wrote:
    > > On 04/27/2012 11:17 PM, Richard Cochran wrote:
    > > >
    > > >Wait a minute. If user space manages this variable, then shouldn't the
    > > >kernel leave it alone?
    > >
    > > Right. That's why I'm asking. I actually haven't spent much time
    > > looking at how the tai value provided via adjtimex is handled, and I
    > > want to make sure its ok if we modify it from the kernel.
    > We *are* already modifying it in kernel, but at the wrong time.
    > I don't know either what ntpd does, but I will find out.
    > [ But if ntpd just uses adjtimex() to use the kernel as storage for
    > variables, then that is really stupid. ]

    I took a look at ntp-4.2.6p5, and ntpd unconditionally sets the TAI
    offset using MOD_TAI when it thinks the offset has changed.

    But I think it won't hurt if the kernel changes the offset
    automatically, since ntpd will just try and set the same value again.


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      Last update: 2012-05-05 12:21    [W:0.021 / U:3.780 seconds]
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