Re: [patch] Real-Time Preemption, -RT-2.6.12-rc6-V0.7.48-00

["K.R. Foley" <kr@cybsft.com>]

K.R. Foley wrote:
> Ingo Molnar wrote:
>
> > i have released the -V0.7.48-00 Real-Time Preemption patch, which can 
> > be downloaded from the usual place:
> >
> >     http://redhat.com/~mingo/realtime-preempt/
> >
> > this release includes an improved version of Daniel Walker's soft 
> > irq-flag (hardirq-disable removal) feature. It is an unconditional part
> > of the PREEMPT_RT preemption model - other preemption models should not
> > be affected that much (besides possible build issues). Non-x86 arches
> > wont build. Some regressions might happen, so take care..
> >
> > Changes since -47-29:
> >
> >  - soft IRQ flag support (Daniel Walker)
> >
> >  - fix race in usbnet.c (Eugeny S. Mints)
> >
> >  - further improvements to the soft IRQ flag code
> >
> > to build a -V0.7.48-00 tree, the following patches should to be applied:
> >
> >    http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.11.tar.bz2
> >    http://kernel.org/pub/linux/kernel/v2.6/testing/patch-2.6.12-rc6.bz2
> >    
> > http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.12-rc6-V0.7.48-00 
> >
> >
> >     Ingo
>
>
> Ingo,
>
> I can't get any version of RT-preempt applied to 2.6.12-rc6 up to and 
> including 48-01 to boot on any of my SMP systems. I get no log because 
> it dies right after the "Uncompressing kernel" message. 2.6.12-rc6 boots 
> fine.  I am attaching my config. Am I missing something obvious? I am 
> building 48-01 with voluntary-preempt now to try that.

Well crap. Perhaps I should have tried this first. If I disable the 
runtime selectable locking

# CONFIG_DEBUG_RT_LOCKING_MODE is not set

it seems to work fine. With the above enabled it hangs on both of my SMP 
systems as described above. :-/

--
   kr
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