- Linux kernel release 3.x <http://kernel.org/>
+ Linux kernel release 3.x <http://kernel.org/>
These are the release notes for Linux version 3. Read them carefully,
as they tell you what this is all about, explain how to install the
directory where you have permissions (eg. your home directory) and
unpack it:
- gzip -cd linux-3.X.tar.gz | tar xvf -
+ gzip -cd linux-3.X.tar.gz | tar xvf -
or
- bzip2 -dc linux-3.X.tar.bz2 | tar xvf -
+ bzip2 -dc linux-3.X.tar.bz2 | tar xvf -
Replace "X" with the version number of the latest kernel.
install by patching, get all the newer patch files, enter the
top level directory of the kernel source (linux-3.X) and execute:
- gzip -cd ../patch-3.x.gz | patch -p1
+ gzip -cd ../patch-3.x.gz | patch -p1
or
- bzip2 -dc ../patch-3.x.bz2 | patch -p1
+ bzip2 -dc ../patch-3.x.bz2 | patch -p1
Replace "x" for all versions bigger than the version "X" of your current
source tree, _in_order_, and you should be ok. You may want to remove
process. It determines the current kernel version and applies any
patches found.
- linux/scripts/patch-kernel linux
+ linux/scripts/patch-kernel linux
The first argument in the command above is the location of the
kernel source. Patches are applied from the current directory, but
- Make sure you have no stale .o files and dependencies lying around:
- cd linux
- make mrproper
+ cd linux
+ make mrproper
You should now have the sources correctly installed.
place for the output files (including .config).
Example:
- kernel source code: /usr/src/linux-3.X
- build directory: /home/name/build/kernel
+ kernel source code: /usr/src/linux-3.X
+ build directory: /home/name/build/kernel
To configure and build the kernel, use:
- Alternative configuration commands are:
- "make config" Plain text interface.
+ "make config" Plain text interface.
- "make menuconfig" Text based color menus, radiolists & dialogs.
+ "make menuconfig" Text based color menus, radiolists & dialogs.
- "make nconfig" Enhanced text based color menus.
+ "make nconfig" Enhanced text based color menus.
- "make xconfig" X windows (Qt) based configuration tool.
+ "make xconfig" X windows (Qt) based configuration tool.
- "make gconfig" X windows (Gtk) based configuration tool.
+ "make gconfig" X windows (Gtk) based configuration tool.
- "make oldconfig" Default all questions based on the contents of
- your existing ./.config file and asking about
- new config symbols.
+ "make oldconfig" Default all questions based on the contents of
+ your existing ./.config file and asking about
+ new config symbols.
- "make silentoldconfig"
- Like above, but avoids cluttering the screen
- with questions already answered.
- Additionally updates the dependencies.
+ "make silentoldconfig"
+ Like above, but avoids cluttering the screen
+ with questions already answered.
+ Additionally updates the dependencies.
- "make defconfig" Create a ./.config file by using the default
- symbol values from either arch/$ARCH/defconfig
- or arch/$ARCH/configs/${PLATFORM}_defconfig,
- depending on the architecture.
+ "make defconfig" Create a ./.config file by using the default
+ symbol values from either arch/$ARCH/defconfig
+ or arch/$ARCH/configs/${PLATFORM}_defconfig,
+ depending on the architecture.
- "make ${PLATFORM}_defconfig"
- Create a ./.config file by using the default
- symbol values from
- arch/$ARCH/configs/${PLATFORM}_defconfig.
- Use "make help" to get a list of all available
- platforms of your architecture.
+ "make ${PLATFORM}_defconfig"
+ Create a ./.config file by using the default
+ symbol values from
+ arch/$ARCH/configs/${PLATFORM}_defconfig.
+ Use "make help" to get a list of all available
+ platforms of your architecture.
- "make allyesconfig"
- Create a ./.config file by setting symbol
- values to 'y' as much as possible.
+ "make allyesconfig"
+ Create a ./.config file by setting symbol
+ values to 'y' as much as possible.
- "make allmodconfig"
- Create a ./.config file by setting symbol
- values to 'm' as much as possible.
+ "make allmodconfig"
+ Create a ./.config file by setting symbol
+ values to 'm' as much as possible.
- "make allnoconfig" Create a ./.config file by setting symbol
- values to 'n' as much as possible.
+ "make allnoconfig" Create a ./.config file by setting symbol
+ values to 'n' as much as possible.
- "make randconfig" Create a ./.config file by setting symbol
- values to random values.
+ "make randconfig" Create a ./.config file by setting symbol
+ values to random values.
You can find more information on using the Linux kernel config tools
in Documentation/kbuild/kconfig.txt.
- NOTES on "make config":
+ - NOTES on "make config":
- - Having unnecessary drivers will make the kernel bigger, and can
- under some circumstances lead to problems: probing for a
- nonexistent controller card may confuse your other controllers
+ - Having unnecessary drivers will make the kernel bigger, and can
+ under some circumstances lead to problems: probing for a
+ nonexistent controller card may confuse your other controllers
- - Compiling the kernel with "Processor type" set higher than 386
- will result in a kernel that does NOT work on a 386. The
- kernel will detect this on bootup, and give up.
+ - Compiling the kernel with "Processor type" set higher than 386
+ will result in a kernel that does NOT work on a 386. The
+ kernel will detect this on bootup, and give up.
- - A kernel with math-emulation compiled in will still use the
- coprocessor if one is present: the math emulation will just
- never get used in that case. The kernel will be slightly larger,
- but will work on different machines regardless of whether they
- have a math coprocessor or not.
+ - A kernel with math-emulation compiled in will still use the
+ coprocessor if one is present: the math emulation will just
+ never get used in that case. The kernel will be slightly larger,
+ but will work on different machines regardless of whether they
+ have a math coprocessor or not.
- - The "kernel hacking" configuration details usually result in a
- bigger or slower kernel (or both), and can even make the kernel
- less stable by configuring some routines to actively try to
- break bad code to find kernel problems (kmalloc()). Thus you
- should probably answer 'n' to the questions for
- "development", "experimental", or "debugging" features.
+ - The "kernel hacking" configuration details usually result in a
+ bigger or slower kernel (or both), and can even make the kernel
+ less stable by configuring some routines to actively try to
+ break bad code to find kernel problems (kmalloc()). Thus you
+ should probably answer 'n' to the questions for "development",
+ "experimental", or "debugging" features.
COMPILING the kernel:
For this, use "verbose" build mode. This is done by inserting
"V=1" in the "make" command. E.g.:
- make V=1 all
+ make V=1 all
To have the build system also tell the reason for the rebuild of each
target, use "V=2". The default is "V=0".
- If the bug results in a message like
- unable to handle kernel paging request at address C0000010
- Oops: 0002
- EIP: 0010:XXXXXXXX
- eax: xxxxxxxx ebx: xxxxxxxx ecx: xxxxxxxx edx: xxxxxxxx
- esi: xxxxxxxx edi: xxxxxxxx ebp: xxxxxxxx
- ds: xxxx es: xxxx fs: xxxx gs: xxxx
- Pid: xx, process nr: xx
- xx xx xx xx xx xx xx xx xx xx
+ unable to handle kernel paging request at address C0000010
+ Oops: 0002
+ EIP: 0010:XXXXXXXX
+ eax: xxxxxxxx ebx: xxxxxxxx ecx: xxxxxxxx edx: xxxxxxxx
+ esi: xxxxxxxx edi: xxxxxxxx ebp: xxxxxxxx
+ ds: xxxx es: xxxx fs: xxxx gs: xxxx
+ Pid: xx, process nr: xx
+ xx xx xx xx xx xx xx xx xx xx
or similar kernel debugging information on your screen or in your
system log, please duplicate it *exactly*. The dump may look
the file 'linux/vmlinux'. To extract the namelist and match it against
the EIP from the kernel crash, do:
- nm vmlinux | sort | less
+ nm vmlinux | sort | less
This will give you a list of kernel addresses sorted in ascending
order, from which it is simple to find the function that contains the
projects / openwrt / staging / blogic.git / commitdiff