我已经在 centos 上安装了内核开发，但仍然找不到内核头
# yum install kernel-devel
Loaded plugins: fastestmirror, ovl
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: mirrors....net
* extras: ...
* updates: mirrors.....net
Package kernel-devel-2.6.32-642.15.1.el6.x86_64 already installed and latest version
但是 gcc 仍然找不到头文件：
# cat testkmem.c
#include<sys/types.h>
#include<sys/kmem.h>
int main(){
return 0;
}
# gcc testkmem.c
testkmem.c:2:21: error: sys/kmem.h: No such file or directory
如何解决这个编译问题，需要额外的 yum 包吗？
你知道定位命令吗？
$ locate kmem.h
/usr/src/kernels/3.10.0-514.10.2.el7.x86_64/include/config/memcg/kmem.h
/usr/src/kernels/3.10.0-514.10.2.el7.x86_64/include/trace/events/kmem.h
：-(，我认为您的路径有错误。