函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\rwsem.c Create Date:2022-07-27 10:48:24
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Return just the real task structure pointer of the owner

函数原型：static inline struct task_struct *rwsem_owner(struct rw_semaphore *sem)

返回类型：struct task_struct

参数：

类型参数名称
struct rw_semaphore *sem
287  返回:atomic_long_read( & Write owner or one of the read owners as well flags regarding* the current state of the rwsem. Can be used as a speculative* check to see if the write owner is running on the cpu.)按位与RWSEM_OWNER_FLAGS_MASK的反
调用者
名称描述
__up_writelock after writing
__downgrade_writedowngrade write lock to read lock