rcu_head主要被用作RCU锁 struct rcu_head rcu_head; 第二个Union struct page的第二个union大小为4个字节,主要成员包括如下: union { /* This union is 4 bytes in size. */ /* * If the page can be mapped to userspace, encodes the number * of times this page is referenced by a page tab...
struct rcu_head rcuhead; }f_u; 其中的struct list_head定义在 linux/include/linux/list.h中,原型为: struct list_head { struct list_head *next, *prev; }; 用于通用文件对象链表的指针。 struct rcu_head定义在linux/include/linux/rcupdate.h中,其原型为: /** * struct rcu_head - callback str...
int rcu_read_lock_nesting; char rcu_read_unlock_special; struct list_head rcu_node_entry; #endif /* #ifdef CONFIG_PREEMPT_RCU */ #ifdef CONFIG_TREE_PREEMPT_RCU struct rcu_node *rcu_blocked_node; #endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */ #ifdef CONFIG_RCU_BOOST struct rt_mutex *r...
struct hlist_bl_node d_in_lookup_hash; struct rcu_head d_rcu; } d_u; } __randomize_layout; l d_flags:目录项的标志位,用于标识目录项的状态和属性。 l d_seq:用于实现读-复制更新(RCU)机制的序列计数器,用于保护目录项的访问。 l d_hash:用于在哈希表中进行目录项的快速查找。除根dentry以外,...
(41)、RCU链表 [cpp] view plain copy struct rcu_head rcu; (42)、管道 [cpp] view plain copy struct pipe_inode_info *splice_pipe; (43)、延迟计数 [cpp] view plain copy #ifdef CONFIG_TASK_DELAY_ACCT struct task_delay_info *delays; #endif (44)、fault injection,参考内核说明文件linux...
struct rcu_head rcu; (41)、管道 struct pipe_inode_info *splice_pipe; (42)、延迟计数 #ifdef CONFIG_TASK_DELAY_ACCT struct task_delay_info *delays; #endif (43)、fault injection #ifdef CONFIG_FAULT_INJECTION int make_it_fail; #endif ...
struct rcu_head rcu; (41)、管道 struct pipe_inode_info *splice_pipe; (42)、延迟计数 #ifdef CONFIG_TASK_DELAY_ACCT struct task_delay_info *delays; #endif (43)、fault injection #ifdef CONFIG_FAULT_INJECTION int make_it_fail; #endif ...
structrcu_headrcu;refcount_trcu_users;intpagefault_disabled;}; 2.2、打印task_struct字段2.2.1、代码设计思路: 系统中的进程数量巨大,为了方便管理,于是推出了进程链表的概念,每个进程链表由指向PCB的指针组成,在struct task_struct中定义为tasks字段。其大概结构如图所示: ...
/** @rcu_head: You can use this to free a page by RCU. */ structrcu_headrcu_head; }; union{/* This union is 4 bytes in size. */ /* * If the page can be mapped to userspace, encodes the number * of times this page is referenced by a page table. ...
struct rcu_head rcuhead; }f_u; 其中的struct list_head定义在 linux/include/linux/list.h中,原型为: struct list_head { struct list_head *next, *prev; }; 用于通用文件对象链表的指针。 struct rcu_head定义在linux/include/linux/rcupdate.h中,其原型为: ...