函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\eventpoll.c Create Date:2022-07-29 10:50:51
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ep_remove_wait_queue

函数原型：static void ep_remove_wait_queue(struct eppoll_entry *pwq)

返回类型：void

参数：

类型参数名称
struct eppoll_entry *pwq
586  _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
593  whead等于smp_load_acquire( & The wait queue head that linked the "wait" wait queue item )
594  如果whead则remove_wait_queue(whead, & Wait queue item that will be linked to the target file wait* queue head.)
596  _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()
调用者
名称描述
ep_unregister_pollwaitThis function unregisters poll callbacks from the associated file* descriptor. Must be called with "mtx" held (or "epmutex" if called from* ep_free).