函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:security\apparmor\include\policy.h Create Date:2022-07-27 21:20:39
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：aa_get_profile_rcu - increment a refcount profile that can be replaced*@p: pointer to profile that can be replaced (NOT NULL)* Returns: pointer to a refcounted profile.* else NULL if no profile

函数原型：static inline struct aa_profile *aa_get_profile_rcu(struct aa_profile __rcu **p)

返回类型：struct aa_profile

参数：

类型参数名称
struct aa_profile __rcu **p
277  _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
278  循环
279  c等于cu_dereference() - fetch RCU-protected pointer for dereferencing*@p: The pointer to read, prior to dereferencing* This is a simple wrapper around rcu_dereference_check().( * p)
280  当c且非kref_get_unless_zero - Increment refcount for object unless it is zero循环
281  _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()
283  返回:c
调用者
名称描述
build_change_hathelper fn for change_hat* Returns: label for hat transition OR ERR_PTR. Does NOT return NULL
change_hathelper fn for changing into a hat* Returns: label for hat transition or ERR_PTR. Does not return NULL