经过上一篇，发现2.6.31版本的补丁不能正常运行（还未找到原因），现改用2.6.33版本：
kernel：linux-2.6.33.9
patch：patch-2.6.33.9-rt
解压并打好补丁后，按照如下步骤进行：
1.配置内核
make mrprobe //清除环境变量，即清除配置文件
make menuconfig
（1）进入菜单networking support -> networking options -> network packet filtering framework(netfilter)
A. core netfilter configuration
勾中”Netfilter connection tracking support”
将netbios name service protocal support(new) 编译成模块（状态用空格切换为“M”）
勾中“Netfilter Xtables support (required for ip_tables)”
B. IP: Netfilter Configuration
将“IPv4 connection tracking support (require for NAT)” 编译成模块（状态用空格切换为“M”）
勾中IP tables support (required for filtering/masq/NAT)
将“Full NAT” 下的 “MASQUERADE target support” 和 “REDIRECT target support” 编译成模块（状态用空格切换为“M”）
（2）进入Processor type and features -> Preemption Mode
A. 选中“Complete Preemption(Real-Time)”
B. 选中“Thread Softirqs”和“Thread Hardirqs”
（3）进入Device Drivers，去掉“Staging Drivers”
（4）进入Device Drivers -> Network device support -> Network device support ->
A. Intel(R) PRO/1000 Gigabit Ethernet support
B. Intel(R) PRO/1000 PCI-Express Gigabit Ethernet support
（5）退出并保存
2.编译模块
make clean // 确保所有东西均保持最新状态
make bzImage // 生成内核文件
make modules // 编译模块
3.安装
make modules_install // 安装模块
make install // 安装
此处，第二部会报错，形式如下：
[root@gdyang linux-2.6.33.9]# make install
sh /usr/src/linux-2.6.33.9/arch/x86/boot/install.sh 2.6.33.9-rt31 arch/x86/boot/bzImage \
System.map "/boot"
ERROR: modinfo: could not find module aesni_intel
ERROR: modinfo: could not find module ablk_helper
ERROR: modinfo: could not find module xt_CHECKSUM
ERROR: modinfo: could not find module mperf
ERROR: modinfo: could not find module ip_tables
ERROR: modinfo: could not find module nf_defrag_ipv6
ERROR: modinfo: could not find module nf_conntrack
ERROR: modinfo: could not find module iwldvm
ERROR: modinfo: could not find module iwlwifi
ERROR: modinfo: could not find module lpc_ich
ERROR: modinfo: could not find module e1000e
ERROR: modinfo: could not find module ptp
ERROR: modinfo: could not find module xhci_hcd
ERROR: modinfo: could not find module i915
ERROR: modinfo: could not find module nouveau
ERROR: modinfo: could not find module mxm_wmi
但不影响系统启动。
4.后续处理
mkinitrd /boot/initrd-2.6.33.9-rt31.img 2.6.33.9-rt31
cp arch/x86/boot/bzImage /boot/vmlinuz-2.6.33.9-rt31
cp /usr/src/linux-2.6.33.9/System.map /boot/System.map-2.6.33.9-rt31