函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\qspinlock.c Create Date:2022-07-27 10:51:53
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：lear_pending_set_locked - take ownership and clear the pending bit.*@lock: Pointer to queued spinlock structure* *,1,0 -> *,0,1* Lock stealing is not allowed if this function is used.

函数原型：static __always_inline void clear_pending_set_locked(struct qspinlock *lock)

返回类型：void

参数：

类型参数名称
struct qspinlock *lock
162  WRITE_ONCE(locked_pending, _Q_LOCKED_VAL)
调用者
名称描述
queued_spin_lock_slowpathqueued_spin_lock_slowpath - acquire the queued spinlock*@lock: Pointer to queued spinlock structure*@val: Current value of the queued spinlock 32-bit word* (queue tail, pending bit, lock value)* fast : slow : unlock* : :* uncontended (0,0,0) -:--> (0,0,1)