how to upgrade CentOS kernel

最新推荐文章于 2022-10-26 17:56:04 发布

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最新推荐文章于 2022-10-26 17:56:04 发布

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分类专栏： linux 文章标签： centos

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本文介绍了如何升级CentOS系统的内核，包括复制配置文件、使用oldconfig或defconfig、执行make localmodconfig、重启选择新内核以及可能需要编辑initrd文件等步骤。同时提供了多个参考资料链接，帮助理解内核配置选项和升级过程。

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1,wget -c http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.4.tar.bz2
2, make mrproper

3, cp /boot/config* .config ； make oldconfig

or make defconfig [ use the sample config as the .config file (linux-2.6.24.4/arch/x86/configs/i386_defconfig)]

或者更好的使用命令make localmodconfig来产生配置

4, make dep
5, Make kernel and install

make -j4 bzImage V=1
make -j4 modules V=1 
make modules_install V=1

6, install others

   cp arch/x86/boot/bzImage       /boo/bzImage-2.6.24
   cp System.map         /boo/System.map-2.6.24 
   mkinitrd -v /boot/initrd-2.6.24.img  2.6.24.4

7, Add strings below to grub/menu.lst

        title CentOS (2.6.24)
        root (hd0,0)
        kernel /bzImage-2.6.24 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
        initrd /initrd-2.6.24.img

8,reboot and select your new kernel

9,有可能需要编辑initrd文件
解压:

 #  zcat initrd.gz | cpio -ivd --no-absolute-filenames
  打包:
# find . | cpio -o -H newc -F tmp_initrd2
# gzip -f9 tmp_initrd2

10, 查看帮组

[root@Tony32 linux-2.6.39]# make help

11，配置工具比较：

Command	Description
`make config`	Text based configuration. The options are prompted one after another. All options need to be answered, and out-of-order access to former options is not possible.
`make menuconfig`	An ncurses-based graphical menu (only text input). Navigate through the menu to modify the desired options.
`make defconfig`	Generates a new config with default from the ARCH supplied defconfig file. Use this option to get back the default configuration file that came with the sources.
`make nconfig`	Graphical menu based on ncurses. Requires sys-libs/ncurses to be installed.
`make xconfig`	Graphical menu using Qt4. Requires dev-qt/qtgui to be installed.
`make gconfig`	Graphical menu using GTK+. Requires x11-libs/gtk+, dev-libs/glib, and gnome-base/libglade to be installed.
`make oldconfig`	Review changes between kernel versions and update to create a new `.config` for the kernel.
`make allyesconfig`	Enables all configuration options in the kernel. target will set all kernel options to `*`. Make sure a backup of the current kernel configuration is acquired before experimentally using it!

12，编译所有的模块allyesconfig

make mrproper
make allyesconfig
make localmodconfig
make
make modules_install
make install
#重新生成一遍initrd
<pre name="code" class="plain">mkinitrd -v /boot/initrd-2.6.24.img  2.6.24.4

参考：

http://www.gentoo.org/doc/en/kernel-upgrade.xml

http://www.linuxtopia.org/online_books/linux_kernel/kernel_configuration/ch05.html

https://wiki.archlinux.org/index.php/Modprobed-db

Linux 配置项含义查询：http://cateee.net/lkddb/web-lkddb/ http://kernel.xc.net/html/linux-2.6.27/xtensa/

http://blog.faq-book.com/?p=6811

http://wiki.gentoo.org/wiki/Kernel/Configuration