Linux 内核整体架构

用户态

|-----------------|--------  |------------------|----------- |----
|内核态           |           |                 |             |
|                 |          |                  |            |
{cpu scheduler}   {IPC}      {NetWork}          {VFS}       {Memory Management}
------|-------------------------------------------------------------
      |                      Device Driver
------|--------------
      CPU                                                        Memory

操作系统层面与内存分配有关的两个系统调用：

brk
mmap

这两种方式都是分配虚拟内存，没有分配物理内存

https://blog.youkuaiyun.com/watermelonbig/article/details/79371930

https://blog.youkuaiyun.com/changexhao/article/details/78321295

转载于:https://my.oschina.net/innovation/blog/3060904