Re: [ANNOUNCE] 3.0-rt4

From: Paul E. McKenney
Date: Thu Jul 28 2011 - 14:33:34 EST


On Thu, Jul 28, 2011 at 07:43:43PM +0200, Thomas Gleixner wrote:
>
> On Thu, 28 Jul 2011, Paul E. McKenney wrote:
>
> > On Wed, Jul 27, 2011 at 11:37:09PM +0200, Thomas Gleixner wrote:
> > > Dear RT Folks,
> > >
> > > I'm pleased to announce the 3.0-rt4 release.
> >
> > 3.0-rt5 boots single-CPU under KVM on a 32-bit laptop. Also with "-smp
> > 2". It even survived a minute or so of rcutorture in both cases. ;-)
> >
> > Some weirdness with interactivity -- if the system is idle aside from
> > rcutorture, the rcutorture.stat_interval console messages don't come
> > out unless I hit "enter" on the console. But if I run "top", they do
> > come out regularly. Might well be KVM's fault, except that running
> > rcutorture on non-rt kernels doesn't exhibit this behavior.
>
> Nah, that's my lazy "avoid printing from atomic context" hack :)

Well, then, that does seem to be working... ;-)

Except that these printk()s are from process level -- rcu_torture_stats()
in kernel/rcutorture.c.

> > I guess I should try RCU_BOOST=y, then...
>
> Good luck :)

Compiled without error and has been running rcutorture smp=2 for
about 30 minutes now.

Thanx, Paul
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