1.更新源

yum update
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org 
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm

2.确认目前的版本信息

uname -r

3.删除相关组件

yum remove kernel-headers kernel-tools kernel-tools-libs

4.安装相关组件

yum -y --disablerepo="*" --enablerepo="elrepo-kernel" install kernel-ml kernel-ml-devel kernel-ml-headers kernel-ml-tools kernel-ml-tools-libs kernel-ml-tools-libs-devel 
sed -i '/GRUB_DEFAULT/s/=.*/=0/' /etc/default/grub
grub2-mkconfig -o /boot/grub2/grub.cfg
reboot

确认是否升级成功

uname -r

安装gcc和bcc-tools

yum install -y elfutils-libelf-devel flex
yum install -y gcc-c++
yum install -y bcc-tools

确认安装成功

[root@localhost ~]# cachestat 1
   TOTAL   MISSES     HITS  DIRTIES   BUFFERS_MB  CACHED_MB
       0        0        0        0            2        416
       0        0        0        0            2        416
       0        0        0        0            2        416
...