函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\notifier.c Create Date:2022-07-27 10:32:21
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：__atomic_notifier_call_chain - Call functions in an atomic notifier chain*@nh: Pointer to head of the atomic notifier chain*@val: Value passed unmodified to notifier function*@v: Pointer passed unmodified to notifier function

函数原型：int __atomic_notifier_call_chain(struct atomic_notifier_head *nh, unsigned long val, void *v, int nr_to_call, int *nr_calls)

返回类型：int

参数：

类型参数名称
struct atomic_notifier_head *nh
unsigned longval
void *v
intnr_to_call
int *nr_calls
172  _read_lock() - mark the beginning of an RCU read-side critical section* When synchronize_rcu() is invoked on one CPU while other CPUs* are within RCU read-side critical sections, then the* synchronize_rcu() is guaranteed to block until after all the other
173  ret等于er_call_chain - Informs the registered notifiers about an event.*@nl: Pointer to head of the blocking notifier chain*@val: Value passed unmodified to notifier function*@v: Pointer passed unmodified to notifier function
174  _read_unlock() - marks the end of an RCU read-side critical section.* In most situations, rcu_read_unlock() is immune from deadlock.* However, in kernels built with CONFIG_RCU_BOOST, rcu_read_unlock()
175  返回:ret
调用者
名称描述
atomic_notifier_call_chain
cpu_pm_notify