atomic_add_unless

函数名称：atomic_add_unless - add unless the number is already a given value*@v: pointer of type atomic_t*@a: the amount to add to v...*@u: ...unless v is equal to u.* Atomically adds @a to @v, if @v was not already @u.* Returns true if the addition was done.

函数原型：static inline bool atomic_add_unless(atomic_t *v, int a, int u)

返回类型：bool

参数：

类型	参数	名称
atomic_t *	v
int	a
int	u

**调用者**
名称	描述
_atomic_dec_and_lock	This is an implementation of the notion of "decrement a* reference count, and return locked if it decremented to zero"
_atomic_dec_and_lock_irqsave
atomic_dec_and_mutex_lock	atomic_dec_and_mutex_lock - return holding mutex if we dec to 0@cnt: the atomic which we are to dec@lock: the mutex to return holding if we dec to 0* return true and hold lock if we dec to 0, return false otherwise
hibernate	hibernate - Carry out system hibernation, including saving the image.
software_resume	software_resume - Resume from a saved hibernation image.* This routine is called as a late initcall, when all devices have been* discovered and initialized already.* The image reading code is called to see if there is a hibernation image
snapshot_open
kdb_param_enable_nmi
unaccount_event
deactivate_super	降低活跃性
atomic_inc_not_zero	atomic_inc_not_zero - increment unless the number is zero@v: pointer of type atomic_t Atomically increments @v by 1, if @v is non-zero.* Returns true if the increment was done.
atomic_long_add_unless
page_ref_add_unless

函数逻辑报告