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

["Serge Noiraud" <serge.noiraud@bull.net>]

Le mer 08/06/2005 à 19:26, K.R. Foley a écrit :
> 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:
...
> >>     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. :-/

Same problem here. OK unsetting the CONFIG_DEBUG_RT_LOCKING_MODE.

I have another problem :
I can't boot. 
With 47-15 I had the following with dmesg :
...
Intel machine check reporting enabled on CPU#1.
CPU1: Intel P4/Xeon Extended MCE MSRs (12) available
CPU1: Thermal monitoring enabled
CPU1: Intel(R) XEON(TM) CPU 1.80GHz stepping 04
Total of 2 processors activated (7110.65 BogoMIPS).
WARNING: 1 siblings found for CPU0, should be 2
WARNING: 1 siblings found for CPU1, should be 2
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
..MP-BIOS bug: 8254 timer not connected to IO-APIC
...trying to set up timer (IRQ0) through the 8259A ...  failed.
...trying to set up timer as Virtual Wire IRQ... works.
checking TSC synchronization across 2 CPUs: passed.
spawn_desched_task(00000000)
desched cpu_callback 3/00000000
ksoftirqd started up.
softirq RT prio: 24.
desched cpu_callback 2/00000000
desched thread 0 started up.
desched cpu_callback 3/00000001
desched cpu_callback 2/00000001
ksoftirqd started up.
...

Now I have this with 48-01 :

Intel machine check reporting enabled on CPU#1.
CPU1: Intel P4/Xeon Extended MCE MSRs (12) available
CPU1: Thermal monitoring enabled
CPU1: Intel(R) XEON(TM) CPU 1.80GHz stepping 04
Total of 2 processors activated (7110.65 BogoMIPS).
WARNING: 1 siblings found for CPU0, should be 2
                                                  <======= missing CPU1
ENABLING IO-APIC IRQs
..TIMER: vector=0x31 pin1=2 pin2=-1
..MP-BIOS bug: 8254 timer not connected to IO-APIC
...trying to set up timer (IRQ0) through the 8259A ...  failed.
...trying to set up timer as Virtual Wire IRQ...  <======= freeze

Is it a problem or a CONFIG parameter ?


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