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:
>
> > * K.R. Foley <kr@cybsft.com> wrote:
> >
> >
> > > > could you uncomment the IO_APIC_CACHE define in 
> > > > arch/i386/kernel/io_apic.c, and could you uncomment line 1109 in 
> > > > drivers/ide/ide-io.c - does this fix things? (in apic mode)
> >
> >
> >
> > > Couple of things: 1) I could not find IO_APIC_CACHE anywhere. I could 
> > > find IOAPIC_CACHE but the define was not commented in io_apic.c. Also 
> > > the BUG_ON at line 1109 in ide-io.c was not commented out either. So 
> > > I made the mental leap that you actually meant to comment these out 
> > > instead of uncomment them??? [...]
> >
> >
> >
> > yeah, sorry :-|
>
> OK so there really was no mental leap. It was more like a 
> trip,stumble,roll,grasp :-) I actually discovered the real meaning of 
> the above after commenting out only one of the above and failed boot. 
> Only then did it dawn on me what you were trying for. Hence the last 
> line of my email not being finished.
>
> > > [...] That works to get the system booted. Although I am getting many 
> > > soft lockups now, minutes after the boot. Log attached. [...]
> >
> >
> >
> > hm, do you get actual lockups, or only the messages about them? I.e.  
> > does the system work fine if you [the sounds of careful thinking to 
> > get the word right] disable CONFIG_DETECT_SOFTLOCKUP, or does it lock 
> > up silently?

Just had an opportunity to check this. Everything does indeed seem to be 
working OK with this disabled. No lock up messages, no perceived problems.

> There doesn't seem to be any actual lockups, just messages. I will try 
> disabling the above when I get home this evening. Can't get to the 
> system right now.
>
> > > [...] 2) In my infinite wisdom before :-) I failed to attach my 
> > > config as I should have done before. Also, commenting out
> >
> >
> >
> > this looks like a sentence worth finishing? :)
>
> Actually see my comment above about the "trip,stumble,roll,grasp" The 
> line above is the point at which I realized what was going on. :-D
>
> >     Ingo


--
   kr
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