rcu_dynticks_snap

函数名称：Snapshot the ->dynticks counter with full ordering so as to allow* stable comparison of this counter with past and future snapshots.

函数原型：int rcu_dynticks_snap(struct rcu_data *rdp)

返回类型：int

参数：

类型	参数	名称
struct rcu_data *	rdp

310

snap等于atomic_add_return(0, & Even value for idle, else odd. )

312

返回:snap按位与Steal a bit from the bottom of ->dynticks for idle entry/exit* control. Initially this is for TLB flushing.的反

**调用者**
名称	描述
rcu_dynticks_in_eqs_since	Return true if the CPU corresponding to the specified rcu_data* structure has spent some time in an extended quiescent state since* rcu_dynticks_snap() returned the specified snapshot.
dyntick_save_progress_counter	Snapshot the specified CPU's dynticks counter so that we can later* credit them with an implicit quiescent state. Return 1 if this CPU* is in dynticks idle mode, which is an extended quiescent state.
rcu_boot_init_percpu_data	Do boot-time initialization of a CPU's per-CPU RCU data.
print_cpu_stall_info	Print out diagnostic information for the specified stalled CPU.* If the specified CPU is aware of the current RCU grace period, then* print the number of scheduling clock interrupts the CPU has taken* during the time that it has been aware
sync_rcu_exp_select_node_cpus	Select the CPUs within the specified rcu_node that the upcoming* expedited grace period needs to wait for.

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