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

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ibb4223ef2d032a03950263b766414ca1c021e69a

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I5cdca0ee82d3e8a164120fe3ecb6e94f2f89d600

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I32b820bc0eb7465bf54d506e7f5e759ef64101e2

针对字符串类高频函数：
1. 采用单次多字节操作提升字符串类高频函数的执行效率
2. 针对armv7-a，采用neon指令进行优化

close: #I42DAK
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: Ic90d92f778e0006881f793585264ad7e5f644104

the name of the default group is the same with
the directory name.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I3d889a361534adc44e3b1bedfec13efe8e1babf2

【背景】定期A核代码告警清零。

【修改方案】
根据工具扫描结果，对代码告警进行更改。

【影响】
对现有的产品编译不会有影响。

re #I4378T
Signed-off-by: Nwangchen <253227059@qq.com>

add BUILD.gn for all kernel modules
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I018446427bf64615f2596d47862b219659b58b34

1. 更正makefile过滤时被替换函数的不正确路径
2. 防止LOCAL_SRCS再直接+= /*/*.c添加回来

close: #I3XGM8
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: I3aff2a60c5a48f2d6c174afa04d30fa6f5514d7e

update typos in rb tree comment

close #I3U73B
Signed-off-by: kenneth <459864689@qq.com>

do not copy or link file from //third_party to this repository,
just use the files needed from its origin.

Change-Id: I43f60d8aa7dc91925b8ace973933de366d6cb589
Signed-off-by: NCaoruihong <crh.cao@huawei.com>

Change-Id: I052d930d54e63179b17b77f02c107a015f3cfc3f

Change-Id: Ia6c1f6302407a707b3ec9b805f4c92d8a7970b86