Re: Warning: NO_HZ FULL will not work with unstable sched clock

[Frederic Weisbecker]

On Sat, Nov 09, 2013 at 12:32:06PM +0400, Alexander Beregalov wrote:
> Hi,
> It first appeared some time after 3.9 or 3.10 and still persist.
> I guess bisect is not required?
> 
> WARNING: CPU: 1 PID: 6 at kernel/time/tick-sched.c:187
> can_stop_full_tick+0x8d/0x9a()
> NO_HZ FULL will not work with unstable sched clock

Right, it's not a bug, just a warning we've put to make sure that users of
full dynticks are aware of limitations when the sched clock is unstable.

That's something we want to fix in the long run as it seems that quite
a lot of people have unstable tsc.

Thanks.
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