函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\cgroup\cgroup.c Create Date:2022-07-27 12:10:09
Last Modify:2020-03-12 14:18:49 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：rebind_subsystems

函数原型：int rebind_subsystems(struct cgroup_root *dst_root, u16 ss_mask)

返回类型：int

参数：

类型参数名称
struct cgroup_root *dst_root
u16ss_mask
1718  dcgrp等于 The root cgroup. Root is destroyed on its release.
1722  lockdep_assert_held( & cgroup_mutex is the master lock)
1724  循环
1724  __ss_mask等于ss_mask
1724  如果非CGROUP_SUBSYS_COUNT则
1724  ssid等于0
1724  退出
1724  以ssid小于CGROUP_SUBSYS_COUNT循环
1724  ss等于cgroup_subsys[ssid]
1737  当(false)循环
1739  循环
1739  __ss_mask等于ss_mask
1739  如果非CGROUP_SUBSYS_COUNT则
1739  ssid等于0
1739  退出
1739  以ssid小于CGROUP_SUBSYS_COUNT循环
1739  ss等于cgroup_subsys[ssid]
1740  src_root等于 link to parent, protected by cgroup_lock()
1741  scgrp等于 The root cgroup. Root is destroyed on its release.
1742  css等于group_css - obtain a cgroup's css for the specified subsystem*@cgrp: the cgroup of interest*@ss: the subsystem of interest (%NULL returns @cgrp->self)* Return @cgrp's css (cgroup_subsys_state) associated with @ss
1745  WARN_ON(!css || group_css - obtain a cgroup's css for the specified subsystem*@cgrp: the cgroup of interest*@ss: the subsystem of interest (%NULL returns @cgrp->self)* Return @cgrp's css (cgroup_subsys_state) associated with @ss)
1748  The bitmask of subsystems attached to this hierarchy 与等于1左移ssid位的值的反
1749  WARN_ON(cgroup_apply_control(scgrp))
1750  cgroup_finalize_control(scgrp, 0)
1753  RCU_INIT_POINTER() - initialize an RCU protected pointer*@p: The pointer to be initialized.*@v: The value to initialized the pointer to.* Initialize an RCU-protected pointer in special cases where readers( Private pointers for each registered subsystem [ssid], NULL)
1754  cu_assign_pointer() - assign to RCU-protected pointer*@p: pointer to assign to*@v: value to assign (publish)* Assigns the specified value to the specified RCU-protected* pointer, ensuring that any concurrent RCU readers will see* any prior initialization( Private pointers for each registered subsystem [ssid], css)
1755  link to parent, protected by cgroup_lock() 等于dst_root
1756  PI: the cgroup that this css is attached to 等于dcgrp
1758  spin_lock_irq( & css_set_lock)
1759  hash_for_each - iterate over a hashtable*@name: hashtable to iterate*@bkt: integer to use as bucket loop cursor*@obj: the type * to use as a loop cursor for each entry*@member: the name of the hlist_node within the struct(css_set_table, i, cset, hlist)
1760  链表项移动到尾部
1762  spin_unlock_irq( & css_set_lock)
1765  The bitmask of subsystems attached to this hierarchy 或等于1左移ssid位
1766  如果dst_root恒等于The default hierarchy, reserved for the subsystems that are otherwise* unattached - it never has more than a single cgroup, and all tasks are* part of that cgroup.则
1768  否则
1773  ret等于cgroup_apply_control(dcgrp)
1774  如果ret则打印警告信息("partial failure to rebind %s controller (err=%d)\n", name, ret)
1778  如果bind则bind(css)
1780  当(false)循环
1782  kernfs_activate( cgroup kernfs entry )
1783  返回:0
调用者
名称描述
cgroup_destroy_root
cgroup_setup_root
cgroup1_reconfigure