On Fri, 2017-02-03 at 09:53 +0100, Peter Zijlstra wrote:
> On Fri, Feb 03, 2017 at 10:03:14AM +0530, Sachin Sant wrote:
> > I ran few cycles of cpu hot(un)plug tests. In most cases it works except one
> > where I ran into rcu stall:
> >
> > [ 173.493453] INFO: rcu_sched detected stalls on CPUs/tasks:
> > [ 173.493473] > > > > 8-...: (2 GPs behind) idle=006/140000000000000/0
> > softirq=0/0 fqs=2996
> > [ 173.493476] > > > > (detected by 0, t=6002 jiffies, g=885, c=884,
> > q=6350)
>
> Right, I actually saw that too, but I don't think that would be related
> to my patch. I'll see if I can dig into this though, ought to get fixed
> regardless.
FWIW, I'm not seeing stalls/hangs while beating hotplug up in tip. (so
next grew a wart?)
-Mike
