About configuring a kernel, and CONFIG_PREEMPT
Jonathan Ryshpan
jonrysh at pacbell.net
Wed Aug 26 15:23:26 UTC 2009
I need to rebuild the Fedora Kernel, something I haven't done for
many years, to (hopefully) reduce the large number of xruns that I'm
getting using jackd. The plan is to build a preemtable kernel.
1. It look like the file .config in the kernel-devel RPM contains
the configuration parameters for the kernel that goes with that
version of kernel-devel. For example, right now, I'm running
kernel version 2.6.29.6-217.2.8.fc11.x86_64, so this would mean
that /usr/src/kernels/2.6.29.6-217.2.3.fc11.x86_64/.config
contains the configuration parameters for that kernel.
2. This .config file generates a kernel with voluntary preemption.
Is this to avoid a bug or suchlike, or just to generate a kernel
that's best for general use?
3. The natural way to build the new kernel would seem to be to unpack
the kernel source, using
$ rpm --install kernel-2.6.29.6-217.2.8.fc11.src.rpm
copy in the .config file from the kernel-devel package, and then
run
rpmbuild -bb --short-circuit
to generate the new kernel RPMs.
Unfortunately the --short-circuit argument cannot be combined with
the -bb argument. What's the best thing to do here?
A truncated version of this message was sent to the list because of the
(very treacherous) CTRL/NEWLINE shortcut in evolution. Sorry about that.
Thanks - jon
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