函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\refcount.c Create Date:2022-07-27 07:22:34
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:_dec_and_lock_irqsave - return holding spinlock with disabled* interrupts if able to decrement refcount to 0*@r: the refcount*@lock: the spinlock to be locked*@flags: saved IRQ-flags if the is acquired* Same as refcount_dec_and_lock() above except that

函数原型:bool refcount_dec_and_lock_irqsave(refcount_t *r, spinlock_t *lock, unsigned long *flags)

返回类型:bool

参数:

类型参数名称
refcount_t *r
spinlock_t *lock
unsigned long *flags
175  如果_dec_not_one - decrement a refcount if it is not 1*@r: the refcount* No atomic_t counterpart, it decrements unless the value is 1, in which case* it will return false则返回:false
178  spin_lock_irqsave(lock, * flags)
179  如果非_dec_and_test - decrement a refcount and test if it is 0*@r: the refcount* Similar to atomic_dec_and_test(), it will WARN on underflow and fail to* decrement when saturated at REFCOUNT_SATURATED
180  spin_unlock_irqrestore(lock, * flags)
181  返回:false
184  返回:true
调用者
名称描述
free_uid