Re: [ANNOUNCE] 2.6.33.5-rt23

Thomas Gleixner
2010-06-14T13:34:34Z

On Thu, 10 Jun 2010, Will Schmidt wrote:

> On Thu, 2010-06-10 at 08:07 +0200, Thomas Gleixner wrote:
> > On Wed, 9 Jun 2010, Will Schmidt wrote:
> >
> > > On Wed, 2010-06-09 at 18:44 +0200, Thomas Gleixner wrote:
> > > I'm still on 2.6.33.5-rt22 on powerpc, and have run into a couple
> > > "sleeping function called from invalid context..." BUGs. The first was
> > > during system boot, second during a 'make'.
> > >
> > > relevant code paths don't seem to have changed between -rt22 and -rt23,
> > > so I think still valid.. :-)
> > >
> > > This is on a POWER7 system, which may have opened up some timing
> > > windows, wrt previous runs on POWER6 systems.
> > >
> > >
> > > BUG: sleeping function called from invalid context at
> > > kernel/rtmutex.c:684
> >
> > > [c000000078cf2cf0] [c000000000131a04] .irq_to_desc_alloc_node+0xdc/0x2b8
> >
> > Grr. I thought I had the SPARSE_IRQ stuff disabled on -rt, but seems
> > it came back somehow. Can you disable that, or does you machine depend
> > on it ?
>
> I'm not sure whether it is required by the architecture. I do see that
> SPARSE_IRQ is disabled in arch/x86/Kconfig with a !PREEMPT_RT, but I
> don't see an equivalent 'disable' in arch/powerpc/Kconfig.

Can you disable it ?

Thanks,

tglx