Hi,
I have encountered a problem when a linux system uses a clocksource with
mult = 1 and shift = 0 (clocksource cycle = nanoseconds). It may happen
that the function timekeeping_adjust reduces the value of mult to 0 when
error is lower than the interval [1].
As soon as timekeeper.mult is 0, ktime_get will no longer work because
it uses timekeeping_get_ns which converts the cycle to nanoseconds with
mult as 0 and the system clocksource returns always 0.
Best regards
David Engraf
[1] http://lxr.linux.no/linux+v3.0.62/kernel/time/timekeeping.c#L821
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