函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\rtmutex.c Create Date:2022-07-27 10:52:49
Last Modify:2020-03-17 14:26:38 Copyright©Brick
首页 函数Tree
注解内核,赢得工具下载SCCTEnglish

函数名称：_mutex_cleanup_proxy_lock() - Cleanup failed lock acquisition*@lock: the rt_mutex we were woken on*@waiter: the pre-initialized rt_mutex_waiter* Attempt to clean up after a failed __rt_mutex_start_proxy_lock() or* rt_mutex_wait_proxy_lock()

函数原型：bool rt_mutex_cleanup_proxy_lock(struct rt_mutex *lock, struct rt_mutex_waiter *waiter)

返回类型：bool

参数：

类型参数名称
struct rt_mutex *lock
struct rt_mutex_waiter *waiter
1891  bool cleanup = false
1893  关闭本地中断，获取所要保护的运行队列（runqueue）的自旋锁（spinlock），为查找可运行进程做准备。( & 保护自旋锁)
1905  Try to take an rt-mutex* Must be called with lock->wait_lock held and interrupts disabled*@lock: The lock to be acquired
1910  如果rt_mutex_owner(lock)不等于当前进程则
1911  Remove a waiter from a lock and give up* Must be called with lock->wait_lock held and interrupts disabled. I must* have just failed to try_to_take_rt_mutex().
1912  cleanup = true
1918  fixup_rt_mutex_waiters(lock)
1920  raw_spin_unlock_irq( & 保护自旋锁)
1922  返回:cleanup
调用者
名称描述
futex_lock_piUserspace tried a 0 -> TID atomic transition of the futex value* and failed. The kernel side here does the whole locking operation:* if there are waiters then it will block as a consequence of relying* on rt-mutexes, it does PI, etc
futex_wait_requeue_piex_wait_requeue_pi() - Wait on uaddr and take uaddr2*@uaddr: the futex we initially wait on (non-pi)*@flags: futex flags (FLAGS_SHARED, FLAGS_CLOCKRT, etc