Re: [PATCH] nohz: Fix spurious warning when hrtimer and clockevent get out of sync

[Frederic Weisbecker]

On Thu, Jun 08, 2017 at 10:13:38PM +0000, Levin, Alexander (Sasha Levin) wrote:
> On Thu, Jun 08, 2017 at 09:07:05PM +0200, Frederic Weisbecker wrote:
> > Awesome, these traces have been very helpful! So now I think I get what's going on.
> > Can you please test the following fix?
> 
> With the patch, I hit the warning early on boot:
> 
> [    1.423727] clocksource: Switched to clocksource kvm-clock
> [    1.429326] ------------[ cut here ]------------
> [    1.430234] WARNING: CPU: 1 PID: 0 at kernel/time/tick-sched.c:792 __tick_nohz_idle_enter+0xe1c/0x15c0

Oh sorry, I inverted some conditional. It warns as soon as the tick is completely stopped
and not just deferred, which seldom happen on my testbox.

I need to learn programming again.

Here is the fixed version:

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