Compiling linux kernel

Download kernel source

#cd /usr/src
#wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.36.tar.bz2
#tar -xvjf linux-2.6.34.1.tar.bz2
#ln -s linux-2.6.34.1 linux
#cd linux
#make clean && make mrproper
#cp /boot/config-`uname -r` ./.config
#make menuconfig

*Make menuconfig requires ncurses library, to install it (CentOS):

#yum install ncurses-devel

Choose Load An Alternate

.config
Exit
Save

To install new kernel on CentOS, you must to configure this option in .config file to prevent kernel panic at boot time
CONFIG_SYSFS_DEPRECATED_V2=y

#make all
#make modules_install
#make install

To make sure the new kernel is boot at first, edit /boot/grub/menu.lst; find defaults=1 and change to defaults=0

#shutdown -r now