函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\asm-generic\qrwlock.h Create Date:2022-07-27 10:53:36
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:queued_write_trylock - try to acquire write lock of a queue rwlock*@lock : Pointer to queue rwlock structure* Return: 1 if lock acquired, 0 if failed

函数原型:static inline int queued_write_trylock(struct qrwlock *lock)

返回类型:int

参数:

类型参数名称
struct qrwlock *lock
61  cnts等于atomic_read( & cnts)
62  如果此条件成立可能性小(为编译器优化)(cnts)则返回:0
65  返回:此条件成立可能性大(为编译器优化)(atomic_try_cmpxchg_acquire( & cnts, & cnts, A writer holds the lock ))