css_tryget_online

函数名称：ss_tryget_online - try to obtain a reference on the specified css if online*@css: target css* Obtain a reference on @css if it's online

函数原型：static inline bool css_tryget_online(struct cgroup_subsys_state *css)

返回类型：bool

参数：

类型	参数	名称
struct cgroup_subsys_state *	css

367

如果非flags按位与CSS_NO_REF的值则返回:percpu_ref_tryget_live - try to increment a live percpu refcount*@ref: percpu_ref to try-get* Increment a percpu refcount unless it has already been killed

369

返回:true

**调用者**
名称	描述
cgroup_tryget_css	group_tryget_css - try to get a cgroup's css for the specified subsystem@cgrp: the cgroup of interest@ss: the subsystem of interest* Find and get @cgrp's css assocaited with @ss. If the css doesn't exist* or is offline, %NULL is returned.
cgroup_get_e_css	group_get_e_css - get a cgroup's effective css for the specified subsystem@cgrp: the cgroup of interest@ss: the subsystem of interest* Find and get the effective css of @cgrp for @ss
css_tryget_online_from_dir	ss_tryget_online_from_dir - get corresponding css from a cgroup dentry@dentry: directory dentry of interest@ss: subsystem of interest* If @dentry is a directory for a cgroup which has @ss enabled on it, try* to get the corresponding css and return it
freezer_read
freezer_change_state	zer_change_state - change the freezing state of a cgroup_freezer@freezer: freezer of interest@freeze: whether to freeze or thaw* Freeze or thaw @freezer according to @freeze. The operations are* recursive - all descendants of @freezer will be affected.
update_cpumasks_hier	pdate_cpumasks_hier - Update effective cpumasks and tasks in the subtree@cs: the cpuset to consider@tmp: temp variables for calculating effective_cpus & partition setup* When congifured cpumask is changed, the effective cpumasks of this cpuset
update_nodemasks_hier	pdate_nodemasks_hier - Update effective nodemasks and tasks in the subtree@cs: the cpuset to consider@new_mems: a temp variable for calculating new effective_mems* When configured nodemask is changed, the effective nodemasks of this cpuset
cpuset_hotplug_workfn	CPU / memory hotplug is handled asynchronously.
__mem_cgroup_largest_soft_limit_node
get_mem_cgroup_from_page	get_mem_cgroup_from_page: Obtain a reference on given page's memcg.@page: page from which memcg should be extracted. Obtain a reference on page->memcg and returns it if successful. Otherwise* root_mem_cgroup is returned.
get_mem_cgroup_from_current	If current->active_memcg is non-NULL, do not fallback to current->mm->memcg.
mem_cgroup_try_charge	mem_cgroup_try_charge - try charging a page@page: page to charge@mm: mm context of the victim@gfp_mask: reclaim mode@memcgp: charged memcg return@compound: charge the page as compound or small page Try to charge @page to the memcg that @mm belongs
mem_cgroup_sk_alloc
blkg_create	If @new_blkg is %NULL, this function tries to allocate a new one as* necessary using %GFP_NOWAIT. @new_blkg is always consumed on return.

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码