Re: Userspace testsuite issues

Hi,

Le jeu. 7 janv. 2016 à 10:27, Emmanuel Pacaud 
<[email protected]> a écrit :
> Hi,
> 
> Le jeu. 7 janv. 2016 à 9:06, Paolo Mantegazza
> <[email protected]> a écrit :
> > On 01/06/2016 07:24 PM, Emmanuel Pacaud wrote:
> >> Le lun. 14 déc. 2015 à 18:42, Paolo Mantegazza
> >> <[email protected]> a écrit :
> >>> At the moment I've no idea.
> >>> Just configure you latency dat by hand, e.g. 4000, 0,0 and go on.
> >>> Run the latency test and adjust for a better figure, as it should
> >>> have been done before.
> >>
> >> I have done that, but it doesn't help in making testsuite pass.
> >>
> >> I have tried to debug things a little, and found the problem is in
> >> the rt_make_hard_realtime call.
> >>
> > That's interesting, you found a possible bug in something that has
> > worked without problems for decades.
> > So, my problem is now to understand what's going wrong in your
> > environment. Not a simple task as I cannot reproduce it on any of 
> the
> > four machines(from P III to dual core I5, + an old OPTERON) I've
> > available.
> 
> Debugging further, it's the call to __ipipe_migrate_head in
> steal_from_linux that doesn't return.

I have recompiled the linux kernel, removing the configuration I have 
been using, replaced by the default kernel configuration.

Now the testsuite pass, so it seems a linux kernel configuration issue.

I'm going to try to find what kernel feature conflicts with rtai. I 
have attached the non-working and working linux kernel configuration. 
Do you have a suggestion on where to look first ?

Thanks.

	Cheers,

		Emmanuel.

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