函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\rcu\rcu.h Create Date:2022-07-27 11:17:50
Last Modify:2022-05-19 07:39:19 Copyright©Brick
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函数名称:Return the counter portion of a sequence number previously returned* by rcu_seq_snap() or rcu_seq_current().

函数原型:static inline unsigned long rcu_seq_ctr(unsigned long s)

返回类型:unsigned long

参数:

类型参数名称
unsigned longs
32  返回:s右移Grace-period counter management.
调用者
名称描述
srcu_gp_endNote the end of an SRCU grace period. Initiates callback invocation* and starts a new grace period if needed.* The ->srcu_cb_mutex acquisition does not protect any data, but* instead prevents more than one grace period from starting while we
srcu_funnel_gp_startFunnel-locking scheme to scalably mediate many concurrent grace-period* requests
rcu_gp_slow
print_cpu_stall_infoPrint 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
exp_funnel_lockFunnel-lock acquisition for expedited grace periods
rcu_exp_wait_wakeWait for the current expedited grace period to complete, and then* wake up everyone who piggybacked on the just-completed expedited* grace period. Also update all the ->exp_seq_rq counters as needed* in order to avoid counter-wrap problems.
synchronize_rcu_expeditedsynchronize_rcu_expedited - Brute-force RCU grace period* Wait for an RCU grace period, but expedite it