函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\mutex.c Create Date:2022-07-27 10:47:37
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Add @waiter to a given location in the lock wait_list and set the* FLAG_WAITERS flag if it's the first waiter.

函数原型：static void __sched __mutex_add_waiter(struct mutex *lock, struct mutex_waiter *waiter, struct list_head *list)

返回类型：void

参数：

类型参数名称
struct mutex *lock
struct mutex_waiter *waiter
struct list_head *list
211  debug_mutex_add_waiter(lock, waiter, 当前进程)
213  添加链表项
214  如果__mutex_waiter_is_first(lock, waiter)则__mutex_set_flag(lock, @owner: contains: 'struct task_struct *' to the current lock owner,* NULL means not owned. Since task_struct pointers are aligned at* at least L1_CACHE_BYTES, we have low bits to store extra state.)
调用者
名称描述
__ww_mutex_add_waiterAdd @waiter to the wait-list, keep the wait-list ordered by stamp, smallest* first
__mutex_lock_commonLock a mutex (possibly interruptible), slowpath: