1. 原kernel/common目录下属于内核拓展组件，统一移入kernel/extend管理
2. Kconfig分层，各模块自己的配置放到自己目录下管理
3. 原platform下不属于平台的公共代码抽到kernel/common下，只留板级链接脚本和一些编译脚本指向device目录下触发平台相关的编译
4. 对外公共头文件统一抽到对外include路径
5. 废弃宏，头文件清理

close: #I48KI4
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: I0cf5ea81c92a8fa7b113da9cbdc8b7bc935f5aae

背景：进程加载的时候，先预申请一个页用作参数拷贝，另外通过mmap方式申请
额外的虚拟栈空间，此时便有两个地址连续的区间。
方案：新增内部接口OsStackAlloc，用于申请一个连续的虚拟地址区间，并对其
中指定区间做物理内存的映射。

close #I43QYJ
Signed-off-by: NHaryslee <lihao189@huawei.com>
Change-Id: I224cca3671c42a94c2f74b2da5a11403849e33d3

背景：对于mmap映射的区间，修改权限后对应的区间名丢失
方案：mprotect修改权限后，对应区间名继承原区间名

close #I43R40
Signed-off-by: NHaryslee <lihao189@huawei.com>
Change-Id: I969c93528cbecc2ded4e437e5aac8f82b8baa609

close #I40QOM

Change-Id: Ib3783f5d6b1095bf2100ab024fe0235a64355823
Signed-off-by: NJerryH1011 <huangjieliang@huawei.com>

【背景】
 消除编译告警

【修改方案】
 消除编译告警

 re #I3ZC1R

 Change-Id: I594d0f57e4cbbdb246a6bef1c978a38228123a34
Signed-off-by: Nx-xiny <1301913191@qq.com>

Change-Id: I1d75cdcdcf9d06ec28e541cdfea77300da7c6bb1

fix compile errors in minimal compilation
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I48f4f7b27c684e2c747c1949776c5c4f9e383dec

LiteOS_a中有部分配置宏进行了重复冗余定义，导致当头文件未被包含时，极易引入错误，
故对menuconfig配置宏进行统一处理，均使用#ifdef/#ifndef作为预编译判断方式

Close #I3YEGS

Change-Id: Ife6db770cc66de1d6199a4f3ba3950e9bfd0e71a
Signed-off-by: Nboxi <lewis.liulei@huawei.com>

add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name

close: #I3WWBD
Signed-off-by: Nmucor <mucorwang@gmail.com>

内存完整性校验原有逻辑中当检测到非零异常指针后仍继续访问异常指针
next的内存域导致系统异常。
本次修改后的逻辑为：检测到非零异常指针后直接退出循环，将异常指针
的相关信息输出即可，增加了goto逻辑。对原有功能逻辑无影响。

close #I3VJZT

Change-Id: I5be06a552cf9fd74d8bd78f5cdf04db06eab4f76
Signed-off-by: NHaryslee <lihao189@huawei.com>

add /proc/fs_cache to display vnode, path cache, page cache.
also change some bad virable name

close: #I3WESD
Signed-off-by: Nmucor <mucorwang@gmail.com>

1.remove redundant headfile in kernel, such as:
  compiler.h;debug.h;automount.h;inode.h;syslog.h;net.h;
2.split fs.h to file.h and driver.h
3.move vnode.h and path_cache.h to vfs/include
4.remove redundant interface and defines

close: #I3RTNR
Signed-off-by: Nmucor <mucorwang@gmail.com>

rename function OsCreateUserVmSpace to fix typo

close https://gitee.com/openharmony/kernel_liteos_a/issues/I3QD42Signed-off-by: kenneth <459864689@qq.com>

support turn off as many features as possible.
current only libc and posix and bsd can not be turned off.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I1e97570c67593207a56dc11f357eca4b4a018bfd

close: #I3I768

Change-Id: I4f801df4abe1a9afdf43391c28276e96a5e81513

Close #I3OAFR

Change-Id: I25b14572809b6fabb9e9d17de89a99047c02a59b

Change-Id: Id75a1b146766f448838afc80ad11cfd9d990e94e

Change-Id: Iecd1a896f92522ecc75d099c23761969a83b1d29

Change-Id: I8662952ac9d7912aaf2e2e72f779b3def41d14c4

Close #I3OAFR

Change-Id: Icea238e20adf402d0ec1fc7e47ff4e58124a5e83

Change-Id: I626a96376fe6bee69b10ee9b56495d62849c19b7

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

Change-Id: I8d2e9f96e86f4130474da9898791240b5d42328e

Description:Fix related interface competition issues.
Sig:liteos_a
Feature or Bugfix:Bugfix
Binary Source:No

Change-Id: I1198408be9ce577bbf0735e3da53d0834622f429

Change-Id: Ie48b96fe9c8ab036d7234b56a169d6668171a895

Change-Id: I5ca037ef20eb65578b804e314617953bfbf6c35b

Description:Delete VM to support only kernel mode.
Sig:liteos_a
Feature or Bugfix:Feature
Binary Source:No

Change-Id: Ie1029c8fbc0c1b85c138663933118d2d148b7769

Change-Id: I608a6e18aad240c52398d744191f6df4bdd68cb5

Feature or Bugfix:Feature
Binary Source:Huawei
PrivateCode(Yes/No):Yes

Change-Id: I175d2648bc6f9078c34de2c0a5c93fda10b86c47
ChangeID:13306388

Change-Id: Id7765f13d15014c8b19b75156b9f5971cbe99705

Reviewed-by: zhangfanfan