close: #I4ATQX
Signed-off-by: NLeon Chan <chenwei26@huawei.com>

Merge pull request !623 from LeonChan/procfs_mode

close: #I4ACTC
Signed-off-by: NLeon Chan <chenwei26@huawei.com>

Merge pull request !534 from LeonChan/pg

1, change the owner of page to vnode
2, save the file path in vnode

close: #I44TBS
Signed-off-by: NLeon Chan <chenwei26@huawei.com>

Merge pull request !620 from Zhaotianyu/0911refactor_makefile

清理Makefile冗余项，各模块Makefile里不需要再次引用公共路径，只需引用私有头文件路径

close: #I49MOO
Signed-off-by: Narvinzzz <zhaotianyu9@huawei.com>
Change-Id: I2dd7189c866498896461f78bfed5444ae1d86876

Merge pull request !619 from Caoruihong/opt_make_scripts

Merge pull request !617 from 野生毛霉君/master

remove redundant script codes
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I67695a69cccefc220ede55add9372bce0c59d7f5

close: #149BPF
Signed-off-by: Nmucor <mucorwang@gmail.com>

Merge pull request !605 from Zhaotianyu/0902dir_refactor

Merge pull request !593 from MGY917/sync

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

Merge pull request !574 from MGY917/sigsuspend

Merge pull request !595 from MGY917/dyload_fd

新增sync方法，该方法每次调用，会遍历系统内所有的mount点，调用各个文件系统注册
的sync方法，完成对所有已挂载文件系统的sync操作。

close #I480HV
Signed-off-by: NGuangyao Ma <guangyao.ma@outlook.com>
Change-Id: I57ced9c3f7685a448defd17ae56c842796b5668f

本次提交修复内核加载器，异常情况分支的一个bug：mksh通过exec命令（mksh内置命令
，正常情况下，该命令成功执行会复用mksh进程空间，拉起新的指定进程）。但是如果
进程没有成功加载的情况下，内核加载器的异常分支会错误释放mksh的fd句柄。最终导致
下次拉起其他进程时（fork + exec方式），新的进程会继承fd，映射了早就释放的sysfd
，此时的sysfd可能已经被复用，issue场景下这个sysfd被加载过程中打开的libc.so占用
，exec时会释放procfd->sysfd(错误的映射关系)，最终新进程libc.so被关闭。
导致内核崩溃。

close #I452Z7
Signed-off-by: NGuangyao Ma <guangyao.ma@outlook.com>
Change-Id: Ifca809f88b5ffcfb879dc5520d1f6adf5cf92bcd

Merge pull request !551 from Denny/remove_todolist

Merge pull request !600 from Caoruihong/opt_20210902

Merge pull request !598 from LiteOS/master

You can specify another config file in hb build like this:
  hb build --gn-args liteos_config_file=myconfig.config
file specified in liteos_config_file argument is relative
to "$product_path/kernel_configs" directory, or is an
absolute file path, for example:
  hb build --gn-args liteos_config_file=//path/to/myconfig.config
or
  hb build --gn-args liteos_config_file=/another/path/to/myconfig.config
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: I7e98604006feff9c2487e06a8f3f2a11e5de746b

Merge pull request !596 from Caoruihong/opt_20210901

$(DEVICE_PATH)/drivers/Kconfig is mandatory now.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ie9484229e2dc6e6babe0cf2daf8e4f6693163052

Merge pull request !597 from Caoruihong/opt_kconfig

Signed-off-by: NLiteOS2021 <dinglu@huawei.com>
Change-Id: Ie4555c57f56c82f74b5e29f0e58aec97dc6cc32d

config files under tools/build/config directory are no maintained any more,
so we delete all of them.
Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Idf51d55caa3c820617b7c90affda0186718632e5

Merge pull request !565 from LiteOS/master

        1.【需求描述】
            L0~L1 支持Trace，提供两种工作模式：在线模式、离线缓存模式， 用于按时间线追踪系统事件，如任务切换、中断、ipc等。
        2.【方案描述】
            L0:
            (1).在内核模块预置静态代码桩
            (2).触发桩后，收集系统上下文信息
            (3).离线模式则写入内存，用户可通过dump导出；
            (4).在线模式通过pipeline对接IDE进行可视化解析和展示；
            L1:
            新增trace字符设备，位于"/dev/trace",通过对设备节点的read\write\ioctl，实现用户态trace；

        BREAKING CHANGE:
        1.新增一系列trace的对外API，位于los_trace.h中.
        LOS_TRACE_EASY简易插桩
        LOS_TRACE标准插桩
        LOS_TraceInit配置Trace缓冲区的地址和大小
        LOS_TraceStart开启事件记录
        LOS_TraceStop停止事件记录
        LOS_TraceRecordDump输出Trace缓冲区数据
        LOS_TraceRecordGet获取Trace缓冲区的首地址
        LOS_TraceReset清除Trace缓冲区中的事件
        LOS_TraceEventMaskSet设置事件掩码，仅记录某些模块的事件
        LOS_TraceHwiFilterHookReg注册过滤特定中断号事件的钩子函数

        Close #I46WA0
Signed-off-by: NLiteOS2021 <dinglu@huawei.com>

Change-Id: I6a8e64794c4852f2c2980993a06180e09ec6ee0d

Merge pull request !586 from jason_gitee/master

Merge pull request !588 from 马帅/master

Merge pull request !590 from Caoruihong/lto

Signed-off-by: NCaoruihong <crh.cao@huawei.com>
Change-Id: Ibf8df58696b7f1ccb3b5b21154c3b94dda1e8ad2

Merge pull request !579 from Caoruihong/optimize_build_scripts

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

Merge pull request !570 from guweijie/gwj-kernel-ppoll-20210825

Signed-off-by: Njason_gitee <yangjie140@huawei.com>

Signed-off-by: Nmaltose214 <mashuai3@huawei.com>

Merge pull request !573 from Caoruihong/v21.02

Merge pull request !571 from wangjianjun/sys