Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\asm-generic\qspinlock.h Create Date:2022-07-28 08:24:14
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:queued_spin_lock - acquire a queued spinlock*@lock: Pointer to queued spinlock structure

Proto:static __always_inline void queued_spin_lock(struct qspinlock *lock)

Type:void

Parameter:

TypeParameterName
struct qspinlock *lock
76  val = 0
78  If Value is more likely to compile time(atomic_try_cmpxchg_acquire( & val, & val, _Q_LOCKED_VAL)) Then Return
81  queued_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)