函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\seqlock.h Create Date:2022-07-27 06:39:22
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：aw_seqcount_begin - begin a seq-read critical section*@s: pointer to seqcount_t* Returns: count to be passed to read_seqcount_retry* raw_seqcount_begin opens a read critical section of the given seqcount

函数原型：static inline unsigned raw_seqcount_begin(const seqcount_t *s)

返回类型：unsigned

参数：

类型参数名称
const seqcount_t *s
184  ret等于READ_ONCE(sequence)
185  smp_rmb()
186  返回:ret按位与1的反
调用者
名称描述
dget_parent
__d_lookup_rcu__d_lookup_rcu - search for a dentry (racy, store-free)*@parent: parent dentry*@name: qstr of name we wish to find*@seqp: returns d_seq value at the point where the dentry was found* Returns: dentry, or NULL* __d_lookup_rcu is the dcache lookup function