【背景】自研shell或者mksh拉起后使用dmesg -s命令出现自旋锁double lock的问题。

【修改方案】
dmesg -s参数设置dmesg缓冲区过程需要访问UartOutput所访问的全局缓冲区，这意味着两个功能模块
使用了同一把自旋锁，若在dmesg命令执行过程使用了打印，则就可能会导致double lock。因此拆分
了dmesg -s命令过程中自旋锁的使用区域，避开内核中必要的打印。

re #I4HIJK
Signed-off-by: yansira <yansira@hotmail.com>
Change-Id: Iad74c058c9a8090fd3d9f338caab7d8f2170f9ac

Merge pull request !696 from kenneth/core_typo

修复社区反馈问题Percpu结构体注释错误，排查下其他拼写错误。

close #I4GMLH
Signed-off-by: Nkenneth <zhushangyuan@huawei.com>

Merge pull request !692 from kenneth/mmu_fix

Merge pull request !702 from huangshan/chore

Change-Id: Ia6dbff0faed4ec73fcf35691676f1acb2b8df78d
Signed-off-by: Nhuangshan <huangshan9@huawei.com>

Merge pull request !697 from mgceshuang/upload_teeee

Merge pull request !686 from wangchen/tocommit

Merge pull request !701 from Caoruihong/gnformat

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ifd3bf13f53a27e0a0bbd051cf35662e7409e6ed0

【背景】增加内核epoll系统调用适配musl接口并增加测试用例

【修改方案】
1, 删除musl仓的porting
2，内核实现epoll对应接口及注册系统调用
3，testsuit目录添加对应的用例

【影响】
对现有的产品编译不会有影响。

re #I4FXPT
Signed-off-by: Nwangchen <253227059@qq.com>

Change-Id: Ia97ea49067aa1ff47b8c1c83675ac75e75d25955

Merge pull request !693 from huangshan/fix-pgrp

Merge pull request !695 from zhushengle/cpup

Signed-off-by: NYOUR_NAME <mashuang9@huawei.com>

Signed-off-by: Nhuangshan <huangshan9@huawei.com>
Change-Id: I5861569c63fd6c1adf8c702797e4d79eba76211f

Merge pull request !662 from 刘治万/1015_unitest

Close #I4GLNT
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I7f3dd61bbf014fa157b1f9a0a089fd985fe188c2

Merge pull request !687 from zhushengle/liteipc

Merge pull request !676 from pef/ppoll-1

【背景】
1.内核中释放用户空间指针报错:"[ERR]OsMemFree check error!"
2.现有ppoll实现存在问题
3.相关用例需要整理
【修改方案】
1.去掉释放用户空间指针操作
2.更正逻辑错误
3.更正掩码设置与恢复不起作用
4.修复补充现有用例
【影响】
对现有的产品编译不会有影响。

re #I47YWZ

Change-Id: Ib2f60986e9cafb2ea5ef1097ab8552cbb1ede5b4
Signed-off-by: Nlnlan <lanleinan@163.com>

layes修正为layers,alreay修正为already,Continous修正为Continuous等等

close #I4GHLR
Signed-off-by: Nkenneth <zhushangyuan@huawei.com>

Close #I4G4HP
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I259c792365d9747f391c5bd275e77f04b83e0792

Merge pull request !679 from kenneth/los_vm_phys

Merge pull request !690 from kenneth/typos

变量readTasks应该为readyTasks；函数OsSchedTaskSwicth应该为OsSchedTaskSwitch；其他拼写错误。

close #I4GFJ7
Signed-off-by: Nkenneth <zhushangyuan@huawei.com>

Merge pull request !685 from zhushengle/liteipc

Merge pull request !665 from lnlan/sys_misc_test_fix

【背景】
内核中释放用户空间指针报错:"[ERR]OsMemFree check error!"

【修改方案】
修改SysPpoll函数。

【影响】
对现有的产品编译不会有影响。

re #I47YWZ

Change-Id: Id7f86036870d4f32be8fc438b9aad85cdda59546
Signed-off-by: pef <cyd1997@126.com>

LosTaskCB 中 字段waitFlag 用于专门记录任务被阻塞的原因，与ipcStatus 功能重复
Close #I4FVHK
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: Ie0998b987ba6e1db050596dec3b359e73ca47686

1.modifications:
    modified:   testsuites/unittest/IO/It_test_IO.h
    modified:   testsuites/unittest/IO/full/IO_test_duplocale_001.cpp
    modified:   testsuites/unittest/IO/io_test.cpp
2.add 19 testcases:
    IO_test_dcgettext_001.cpp
    IO_test_dcgettext_002.cpp
    IO_test_dcngettext_001.cpp
    IO_test_dcngettext_002.cpp
    IO_test_dngettext_001.cpp
    IO_test_dngettext_002.cpp
    IO_test_duplocale_001.cpp
    IO_test_locale_001.cpp
    IO_test_ngettext_001.cpp
    IO_test_nl_langinfo_001.cpp
    IO_test_nl_langinfo_l_001.cpp
    IO_test_strcasecmp_l_001.cpp
    IO_test_strfmon_l_001.cpp
    IO_test_strncasecmp_l_001.cpp
    It_stdio_hasmntopt_001.cpp
    IO_test_gettext_001.cpp
    IO_test_locale_002.cpp
    IO_test_strcasecmp_l_002.cpp
    IO_test_strfmon_l_002.cpp
    IO_test_strncasecmp_l_002.cpp
3.influence:
    none
Signed-off-by: Nliuzhiwan <liuzhiwan2020@163.com>
Change-Id: Ib5883ddb14cfd545f2c5b1685a082f098def0965

Merge pull request !683 from zhushengle/liteipc

1.modifications:
modified:   syscall/fs_syscall.c
2.modify 2 testcases:
IO/full/IO_test_ppoll_001.cpp
IO/full/IO_test_ppoll_002.cpp
3.influence:
none
Signed-off-by: pef <cyd1997@126.com>
Change-Id: I85fc091098a6dfef1a4694a3bbc489640ee6dda2

Close #I4FSA7
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I8b24a1e1554b4b867a841bc1b6765cbfd648cdbd

Merge pull request !682 from zhushengle/test

Merge pull request !664 from zhushengle/Join

Merge pull request !669 from zhushengle/rlimit

【背景】
1.etc/hosts文件不存在，misc09依赖hosts文件而失败

【修改方案】
1.用例执行前检查是否存在这些配置文件，不存在就跳过该用例

re#I48IZ0

Change-Id: I193cb03770932c1f681cd726ceb383816aa2257a
Signed-off-by: Nlnlan <lanleinan@163.com>
Change-Id: I3fb7ca1ed5f8cc79a56cd1872f3b303ab325a7a9

Merge pull request !670 from shenchenkai/master

Merge pull request !666 from lnlan/sys_test_fixed

Close #I4FO0N
Signed-off-by: Nzhushengle <zhushengle@huawei.com>
Change-Id: I9dc9819f2ebceaceea337651cc747d737e437661