Re: [PATCH] timers/nohz: Update nohz load even if tick already stopped

From: Thomas Gleixner
Date: Mon Nov 04 2019 - 17:17:13 EST


On Fri, 1 Nov 2019, Scott Wood wrote:
> On Wed, 2019-10-30 at 14:31 +0100, Peter Zijlstra wrote:
> > Oh argh! that's a bit radical of the remote tick. The normal tick runs
> > just fine on idle CPUs, so lets mirror that.
> >
> > How's this then?

....

>
> Needs to be tick_nohz_tick_stopped_cpu(cpu)
>
> After fixing that, I get:
>
> [ 7.439068] WARNING: CPU: 20 PID: 7 at /home/root/linux/kernel/sched/core.c:3681 sched_tick_remote+0x132/0x150

So I'm going to apply Scotts patch if nobody comes up with a better idea
until tomorrow.

Thanks,

tglx