[LAU] pretty much frustrated about those rt-kernels!

Hermann Meyer brummer- at web.de
Sun Jul 6 04:34:01 EDT 2008


Hi

I cant open your pastbin adresses ? dont now why. 
But I can tell how I build my rt-kernels.
First download the source (2.6.25.8) from kernel.org and unpack it. Download 
the rt-patch unpack it in the floder over the kernelsource. patch the source 
patch          -p1 <../patch-2.6.25.8-rt7
run make oldconfig
run make xconfig
Now you must make sure that you DONT enable 
General setup >> Group scheduling for SCHED_RR/FIF
there for you need a extra patch !!!
you can find more information about that here:
http://news.gmane.org/group/gmane.linux.rt.user/last=/force_load=t
also, if you wont a realtime kernel you have to enable processor type and 
features >> Complete Preemption (Real-Time) 
and enable the highrestimer
the rest is up to your hardware.

i build my kernels with the command:
fakeroot make-kpkg --initrd --revision=deinName1 kernel_image

hope it helps
                         hermann
Am Sonntag, 6. Juli 2008 01:12:05 schrieb schoappied:
> Mark Knecht wrote:
> > On Sat, Jul 5, 2008 at 8:46 AM, schoappied <schoappied at gmail.com> wrote:
> > <SNIP>
> >
> >> I've read on the debian irc channel that it is not necessary to do a
> >> rt-patch with the newest kernels (.25.10), just set in menu config:
> >>
> >> processor type and features >> preemtible  kernel (low -latency desktop)
> >>
> >> and Timer frequentie to 1000 Hz.
> >>
> >> Can anyone confirm this?
> >
> > Not at all true. That strategy will give you a good kernel, but it is
> > not a 'real-time' kernel. You're best bet is to use the specific patch
> > set supplied by Ingo and the RT team.
> >
> > Hope this helps,
> > Mark
>
> whow, Ive spend I think 20 hours to build a kernel but it constantly
> fails.... :( :( :(
>
> I tried everything with help from IRC and documentation, but different
> errors...
>
> for example: http://pastebin.com/m5bc649d
>
> I use a kernel for kernel.org and a rt-patch which fits it...
> I patch the files as described in this howto:
> http://forums.debian.net/viewtopic.php?t=17035&postdays=0&postorder=asc&sta
>rt=0
>
> I use: make oldconfig (skip the questions with ENTER) and then make xconfig
> And set:
> rocessor type and features> Preemption Mode (Complete Preemption
> (Real-Time))
> Processor type and features>Timer frequency (1000 HZ)
>
> Then:
> $ make-kpkg clean ; export VER=$(date +'%Y%m%d')
> NAMEEXT="-$(hostname)-$(dpkg-architecture -qDEB_HOST_ARCH)"; make-kpkg
> --revision=$VER --append-to-version=$NAMEEXT --rootcmd fakeroot --initrd
> kernel_image kernel_headers
>
> Can it fails because of the new kernel versions I try to build?
> Or do I make errors in making the .config file?
>
> This is my hardware, maybe someone can help me making the .config file
> or give me advice for editing xconfig?
>
> http://pastebin.com/m410fbc40
>
> thanks in advance and for the guys at this part of the world, sleep
> well, others have a good day!
>
>
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