[LAU] debian realtime kernel config 2.6.25.8.rt7

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To: <Linux-audio-user@...>
Date: Monday, July 7, 2008 - 3:56 pm

I thought, it would probably help some of you, if I uploaded
my rt-config for a 2.6.25.8 realtime kernel (debian system).

# get my kernel config:
wget http://branwelt.de/download/config.gz

(this is all without any warrenty, use at your own risc)

Below is also a kind of script, that should do the whole procedure
for creating a 2.6.25.8 realtime kernel on a debian based system.

I have not testet this script.
I would recommend, to past command for command, and see if it is
working for you. (it should)
This is how I build the kernel I'm currently using.

Note: The config has the realtime-patch applied, but is not
strictly configured for realtime:
I let enabled acpi and cpu-frequency scaling,
because performance was good enough for my requirements
(2.67ms latency at 48000hz samplerate according to qjackctl).
If you encounter xruns, disable these options with "make menuconfig"
(see bottom)

I tried to keep the config general, so it may be usable on other
systems as well.
It is based on a sidux ~ 2.6.21 configuration, including updates for 2.6.25

start of the command list:
#############################################################
#############################################################

mkdir my_realtime_kernel
cd my_realtime_kernel

# get my kernel config
wget http://branwelt.de/download/config.gz

# get the kernel
wget http://www.eu.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.8.tar.bz2

# get rt-patch
wget http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.25.8-rt7.bz...

# unpack
tar xfj linux-2.6.25.8.tar.bz2
tar xfj patch-2.6.25.8-rt7.bz2

# create a symbolic link
ln -s linux-2.6.25.8 linux
cd linux

# apply patch
patch -p1 < ../patch-2.6.25.8-rt7

# move config to right place
zcat ../config.gz > ./.config

# now edit the Makefile
# change the line with EXTRAVERSION (without #) to:
# EXTRAVERSION = .8.rt7.em1

# optionally do make oldconfig
# or make menuconfig here

# make the kernel
make-kpkg --initrd kernel_image
cd ..

# finally install the kernel with a command like
# dpkg -i linux-image-2.6.25.8.rt7.em1_2.6.25.8.rt7.em1-10.00.Custom_i386.deb

#############################################################
#############################################################
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Messages in current thread:
[LAU] debian realtime kernel config 2.6.25.8.rt7, Emanuel Rumpf, (Mon Jul 7, 3:56 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, Giuseppe Zompatori, (Mon Jul 7, 8:31 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, David Baron, (Sun Jul 13, 3:51 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, Emanuel Rumpf, (Sun Jul 13, 8:31 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, Emanuel Rumpf, (Mon Jul 7, 9:00 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, Emanuel Rumpf, (Mon Jul 7, 6:15 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, Emanuel Rumpf, (Mon Jul 7, 8:58 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, schoappied, (Mon Jul 7, 10:37 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, Emanuel Rumpf, (Tue Jul 8, 7:44 pm)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, schoappied, (Tue Jul 8, 11:53 am)
Re: [LAU] debian realtime kernel config 2.6.25.8.rt7, schoappied, (Mon Jul 7, 10:42 pm)