函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\futex.c Create Date:2022-07-27 11:54:10
Last Modify:2020-03-17 15:28:32 Copyright©Brick
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函数名称：queue_pi_wake_futex() - Wake a task that acquired the lock during requeue*@q: the futex_q*@key: the key of the requeue target futex*@hb: the hash_bucket of the requeue target futex* During futex_requeue, with requeue_pi=1, it is possible to acquire the

函数原型：static inline void requeue_pi_wake_futex(struct futex_q *q, union futex_key *key, struct futex_hash_bucket *hb)

返回类型：void

参数：

类型参数名称
struct futex_q *q
union futex_key *key
struct futex_hash_bucket *hb
1893  Take a reference to the resource addressed by a key.* Can be called while holding spinlocks.
1894  key等于key
1896  __unqueue_futex() - Remove the futex_q from its futex_hash_bucket*@q: The futex_q to unqueue* The q->lock_ptr must not be NULL and must be held by the caller.
1898  WARN_ON(!rt_waiter)
1899  rt_waiter = NULL
1901  lock_ptr等于lock
1903  wake_up_state(task, Convenience macros for the sake of wake_up(): )
调用者
名称描述
futex_proxy_trylock_atomicex_proxy_trylock_atomic() - Attempt an atomic lock for the top waiter*@pifutex: the user address of the to futex*@hb1: the from futex hash bucket, must be locked by the caller*@hb2: the to futex hash bucket, must be locked by the caller*@key1: the from
futex_requeueex_requeue() - Requeue waiters from uaddr1 to uaddr2*@uaddr1: source futex user address*@flags: futex flags (FLAGS_SHARED, etc