Merge pull request !459 from 苏宗耀/master

Signed-off-by: Nsuzongyao <suzongyao@talkweb.com.cn>

Merge pull request !458 from 苏宗耀/master

Signed-off-by: Nsuzongyao <suzongyao@talkweb.com.cn>

Merge pull request !434 from kenneth/lmk1130

低内存资源回收特性，支持维护可杀低重要任务，当高内存任务申请不到足够内存时，临时释放低重要性的任务来释放内存来满足高内存任务正常运行；
当高内存任务退出运行时，自动恢复被杀的低重要性任务。设计文档归档位置 https://gitee.com/rtos_yuan/lmk/tree/design/

BREAKING CHANGE: 增加低内存资源回收注册相关接口LOS_LmkOpsNodeRegister、LOS_LmkOpsNodeUnregister和内存资源释放和任务恢复接口LOS_LmkTasksKill和LOS_LmkTasksRestore.

close #I4ID0M
Signed-off-by: Nkenneth <zhushangyuan@huawei.com>

Merge pull request !455 from JerryH/warning

close #I4LW3H
Signed-off-by: NJerryH <huangjieliang@huawei.com>
Change-Id: I8f1be047ce5af5e7d50822c22764f9b2f04167d9

Merge pull request !452 from SimonLi/master

Signed-off-by: NSimonLi <likailong@huawei.com>

Merge pull request !454 from JerryH/time

删除全局变量，接口使用自己的内部静态变量，避免竞态

Close #I4LW3H
Signed-off-by: NJerryH <huangjieliang@huawei.com>
Change-Id: I3c74b1897b3909df93d21b9d521af270cc6fc610

Merge pull request !453 from besyangjian/master

Merge pull request !451 from besyangjian/master

Signed-off-by: Nyangjian <jianyang@bestechnic.com>
Change-Id: I9d6b708772e63b2dc797d7305801be617fb32e75

Signed-off-by: Nyangjian <jianyang@bestechnic.com>
Change-Id: I91d1ef2b5b77be7ec84af939db202a8b06a9b68f

Merge pull request !446 from JerryH/swtmr

Merge pull request !444 from zhushengle/pm

Merge pull request !450 from Zhaotianyu/1208newlib_lwip

close: #I4LPB2
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: I01fcc0ef35e69103562d4c59e52b335a5695dfc7

Merge pull request !449 from Caoruihong/complete_static_lib_false

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ia3da4f963f44babdc802c58c0afbb1adc1f16ee9

利用每次创建时，软件定时器timerId都是唯一的（0~0xffffffff循环），在超时写队列时，同时记录软件定时器id，删除的时候更新软件定时器id，那么在处理软件定时器前，
通过队列中记录的id获取软件定时器控制块，如果控制块的id不等于记录的id，那么说明该软件定时器被删除过，将不执行对应回调函数，表现为删除该定时器。

BREAKING CHANGE: SwtmrHandlerItem结构体新增swtmrID字段，用于标识超时队列中软件定时器id

Close #I4LFVD
Signed-off-by: NJerryH <huangjieliang@huawei.com>
Change-Id: I716176f177c4bc07adb348936d5568fbadcbebe7

Merge pull request !440 from Caoruihong/support_gcc

Merge pull request !443 from Zhaotianyu/1206newlib_fix_Kconfig

Close #I4L00F
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I0dbe0954dcb881c0079677c215aceb099d6d1b94

close: #I4ENQ1
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: Ib86ba0e35860e225e57c8da9f481de55ba154a40

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I672b7e6109563d457d493c08903bb5a1dff118ad

Merge pull request !368 from Zhaotianyu/1020newlib

系统支持newlib，并且可以与musl-C自由切换

1. 新增newlib支持，适配newlib的预留钩子，针对系统能力适配newlib头文件（补充宏定义，结构体定义，posix能力开关），
  采用标准C与自研posix接口声明与结构体定义混合作为C库
2. 梳理kal的依赖关系，kal作为内核对外提供的标准接口，下属包含cmsis、libc、posix。
  cmsis为内核对cmsis接口的支持，libc为内核对三方C库的适配及使用，posix为内核自研提供的posix标准接口。
  若采用musl-C，则kal中选取libc/musl,posix共同作为C库对外支持；
  若采用newlib-C，则kal中选取libc/newlib,部分posix共同作为C库对外支持。
3. fs整理，components/fs下提供基于posix标准的接口改为内部对外接口，供musl以及newlib切换 适配使用

close: #I4ENQ1
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: I72eda5ac5499f72c67e800e22b0f39eb288f2b94

Merge pull request !433 from kenneth/short_enum

Merge pull request !436 from zhangfanfan2/master

Merge pull request !428 from xieshen9527/master

Merge pull request !437 from zhushengle/test

Close #I4KH68
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I9d23f63cd751a804966a7c6366590897f3858b72

Merge pull request !435 from zhushengle/pm

close: #I4IGGY
Signed-off-by: Nzff <zhangfanfan2@huawei.com>

    开中断导致低功耗流程非原子，容易造成流程出错。
    提供低功耗默认处理函数,优化注册机制

Close #I4KDP8
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: Ied8bab691e7725e207b8b3cfb058f851eafe3052

Merge pull request !393 from LiteOS/lms

编译选项-fno-short-enums是liteos-m支持kconfig（https://gitee.com/openharmony/kernel_liteos_m/pulls/371）时从Liteos-a核引入的编译选项。添加该编译选项后会输出警告信息，
需要去掉该编译选项。

fix #I4JY32
Signed-off-by: Nkenneth <zhushangyuan@huawei.com>