File kernel-rt.5.10.1._spec of Package kernel-rt

Overview Repositories Revisions Requests Users Attributes Meta

File kernel-rt.5.10.1._spec of Package kernel-rt

%define linux 5.10.1
%define preempt rt20

# found this ref with general notes on SUSE kernels
# http://www.suse.de/~agruen/kernel-doc/
# /usr/share/doc/packages/kernel-source/README.SUSE

# some documentation on version numbers
#
# %%linux            Linux kernel base version, e.g. 3.4.32
#
# %%preempt          Preemption patch version, e.g. rt45
#
# %%version	     Linux version number _ rt version number, e.g. 3.4.32_rt45
#
# %%source_rel	     major release, e.g. 1, when release is 1.3
#
# %%localversion     Added to the .config file, major release - variant, 
#                    e.g. 1-preempt_rt. The variant is used to add this 
#                    kernel to the boot menu on SUSE distributions.
#
# %%kernelrelease    Linux version number - rt version - localversion
#                    e.g. 3.4.32-rt45-1-preempt_rt. This is also where
# 		     you find modules under /lib/modules
#
# The file localversion-rt will be added by the preempt_rt patch, and
# contains for example "-rt45" Together with major version, and
# localversion in the .config file, the kernel scripts calculate
# kernelrelease from this file

# Note that include/config/kernel.release in the kernel source dir
# will contain the final release string, easy if you need to determine
# this release string in a module package

# My main motivation to build this kernel series is to use them in our
# simulation facilities, in combination with EtherCat IO hardware. The
# major kernel version (e.g., 3.4 as of feb 2013) is selected to have
# as many available ethercat master drivers as possible

# Hint: to re-create the config for 32 bit arch, when on a 64 bit
# machine, run make oldconfig SUBARCH=i386

# Another Hint: The kernel debug option is deselected to provide a
# possibility to create an nvidia kernel module; nvidia license is
# incompatible with the dump_page symbol generated when kernel debug
# is selected.

# the openSUSE kernel sym "provides" calculation depends on the following:
# * Having a /boot/vmlinux-%%{kernelrelease}.gz file,
#   basically a zipped kernel file. The variant (in this case preempt_rt), is
#   used as prefix for the ksyms
# * Having /lib/modules/%%{kernelrelease}/...*.ko files. The variant/last part
#   of the %%{kernelrelease} is again prefix for the ksyms

# Although SUSE likes to keep the different kernel variant versions
# synchronized with the default kernel version, this is not possible
# for the preempt_rt kernels, because of availability of the
# preempt_rt patch for only select kernel base versions. Therefore
# these kernels run slightly out of sync

%define _buildshell /bin/bash
%define source_rel %(echo %release | cut --delim=. -f 1)
%define localversion -%{source_rel}-rt
%define kernelrelease %{linux}-%{preempt}%{localversion}
%define linux_dir linux-%{linux}

Name: kernel-rt
Summary: Kernel and modules for realtime operation
Version: %{linux}_%{preempt}
Release: 1
License: GPL-2.0
Group: System/Kernel
URL: http://rt.wiki.kernel.org/
Source0: linux-%{linux}.tar.xz
Source1: linux-%{linux}-%{preempt}.config
Patch: patch-%{linux}-%{preempt}.patch.xz
Prereq: /sbin/ldconfig
BuildRequires: gcc gcc-c++ coreutils module-init-tools
BuildRequires: bc flex bison openssl-devel libelf-devel
BuildRequires: modutils
BuildRequires: pesign-obs-integration
Requires: irqbalance
BuildRequires:  makedumpfile
BuildRequires:  fdupes
Requires(pre): coreutils gawk
Requires(post): module-init-tools
Requires(post): /sbin/depmod
Requires(post): mkinitrd
Requires(post): perl-Bootloader
Prereq: fileutils
Prereq: module-init-tools
Prereq: mkinitrd
BuildRoot: %{_tmppath}/%{name}-%{version}-build

%description
This is a kernel package with the PREEMPT_RT patch applied. The 
preempt_rt patch provides preemption for most parts of the kernel, making
this kernel excellent for producing short latency responses, and a bit worse
for overall throughput.

%package headers
Summary: Development headers for the Linux kernel
Group: System/Kernel
Exclusivearch: x86_64

%description headers
Kernel headers for the kernel with PREEMPT_RT patch applied. Includes a 
.config, and should provide all needed files to build external modules

%prep
df -h
# see http://ftp.rpm.org/max-rpm/s1-rpm-inside-macros.html
# for options
%setup -q -n %{linux_dir}

# Patch kernel with RT, copy .config
# copy the config, adjust CONFIG_LOCALVERSION, Together with
# localversion-rt, this ensures a unique kernel
# version string, equal to %%kernelversion

%patch -p1

cp %{SOURCE1} .config
./scripts/config --set-str CONFIG_LOCALVERSION %{localversion}

%build
df -h
%{make_build} oldconfig bzImage modules

%install
df -h
rm -rf %{buildroot}

install -d %{buildroot}/boot
install -d %{buildroot}/lib/modules
%{__make} modules_install INSTALL_MOD_PATH=%{buildroot}
install -m 644 arch/$RPM_ARCH/boot/bzImage \
    %{buildroot}/boot/vmlinuz-%{kernelrelease}
install -m 644 System.map \
    %{buildroot}/boot/System.map-%{kernelrelease}
install -m 444 .config \
    %{buildroot}/boot/config-%{kernelrelease}

cat Module.symvers | gzip -9 >%{buildroot}/boot/symvers-%{kernelrelease}.gz

# build and source currently point to the build directory here. Not good
rm -f %{buildroot}/lib/modules/%{kernelrelease}/build
rm -f %{buildroot}/lib/modules/%{kernelrelease}/source
ln -sf /usr/src/linux-%{version} %{buildroot}/lib/modules/%{kernelrelease}/build
ln -sf build %{buildroot}/lib/modules/%{kernelrelease}/source

# make directories for external modules
mkdir -p %{buildroot}/lib/modules/%{kernelrelease}/extra
mkdir -p %{buildroot}/lib/modules/%{kernelrelease}/updates

# directory with necessary sources for building additional modules
install -d %{buildroot}/usr/src/linux-%{version}
# copy kernel headers and the scripts directory
cp -a include scripts %{buildroot}/usr/src/linux-%{version}
# and all makefile and Kconfig files, with parents. The main Makefile
# has these as targets
cp -a --parents `find . -type f -name "Makefile*" -o -name "Kconfig*"` \
     %{buildroot}/usr/src/linux-%{version}
# copy the x86 architecture headers (add others, if you want more archs)
cp -a --parents arch/x86/include %{buildroot}/usr/src/linux-%{version}

cp Module.symvers %{buildroot}/usr/src/linux-%{version}
cp System.map %{buildroot}/usr/src/linux-%{version}
cp .config %{buildroot}/usr/src/linux-%{version}
cp localversion-rt %{buildroot}/usr/src/linux-%{version}

# Make sure the Makefile and generated files have a matching timestamp so that
# external modules can be built
find  %{buildroot}/usr/src/linux-%{version}/include/generated -name "*.h" -print0 |\
    xargs -0 touch -r %{buildroot}/usr/src/linux-%{version}/Makefile
touch -r %{buildroot}/usr/src/linux-%{version}/Makefile %{buildroot}/usr/src/linux-%{version}/.config

# remove various types of junk
find %{buildroot}/usr/src/linux-%{version} \
  $ -name .gitignore -o -name .install -o -name .\*.cmd $ -a -exec rm {} \;

# de-duplicate files
%if 0%{?suse_version}
%fdupes -s %{buildroot}/usr/src/linux-%{version}
%else
fdupes -s %{buildroot}/usr/src/linux-%{version}
%endif

# remove modules.dep, will be created in post script
rm %{buildroot}/lib/modules/*/modules.dep

# vmlinux for dependency calculation
cp vmlinux %{buildroot}/boot/vmlinux-%{kernelrelease}
gzip -n -9 %{buildroot}/boot/vmlinux-%{kernelrelease}
chmod a-x %{buildroot}/boot/vmlinux-%{kernelrelease}.gz

%postun
# remove the initrd file
rm -f /boot/initrd-%{kernelrelease}

# remove entry from bootloader
if [ -x /usr/lib/bootloader/bootloader_entry ]; then
   /usr/lib/bootloader/bootloader_entry remove \
   					preempt \
   					%{kernelrelease} \
   					vmlinuz-%{kernelrelease} \
   					initrd-%{kernelrelease} \
   					no-default
else
   echo "Manually remove %{kernelrelease} entry from bootloader"
fi

%post
export PBL_SKIP_BOOT_TEST=1
/sbin/depmod -a -F /boot/System.map-%{kernelrelease} %{kernelrelease}

if [ -f /etc/fstab -a ! -e /.buildenv -a -x /sbin/mkinitrd ] ; then
   tmp_dir=/dev/shm /sbin/mkinitrd -k /boot/vmlinuz-%{kernelrelease} \
   		  -M /boot/System.map-%{kernelrelease} \
   		  -i /boot/initrd-%{kernelrelease}
else
   echo "Cannot find mkinitrd"
fi

if [ -x /usr/lib/bootloader/bootloader_entry ]; then
   /usr/lib/bootloader/bootloader_entry add \
   					preempt \
   					%{kernelrelease} \
   					vmlinuz-%{kernelrelease} \
   					initrd-%{kernelrelease} \
   					no-default
else
   echo "Manually add %{kernelrelease} entry to bootloader"
fi

%clean
[ -n "$RPM_BUILD_ROOT" -a "$RPM_BUILD_ROOT" != / ] && rm -rf $RPM_BUILD_ROOT

%files
%defattr(-,root,root,-)
%doc README
%dir /lib/modules/%{kernelrelease}
/lib/modules/%{kernelrelease}/modules.*
/lib/modules/%{kernelrelease}/kernel
/lib/modules/%{kernelrelease}/extra
/lib/modules/%{kernelrelease}/updates
/boot/System.map-%{kernelrelease}
/boot/config-%{kernelrelease}
/boot/vmlinuz-%{kernelrelease}
/boot/symvers-%{kernelrelease}.gz
/boot/vmlinux-%{kernelrelease}.gz

%files headers
%defattr(-,root,root,-)
/usr/src/linux-%{version}
/lib/modules/%{kernelrelease}/build
/lib/modules/%{kernelrelease}/source

%changelog
* Fri Feb  6 2009 Rene van Paassen <Rene.vanPaassen@gmail.com> 2.6.26.8_rt15-2
- removed latency and mutex debug options

* Wed Feb  4 2009 Rene van Paassen <Rene.vanPaassen@gmail.com> 2.6.26.8_rt15-1
- initial version

Places

File kernel-rt.5.10.1._spec of Package kernel-rt

Places