__ref_is_percpu

函数名称：Internal helper. Don't use outside percpu-refcount proper. The* function doesn't return the pointer and let the caller test it for NULL* because doing so forces the compiler to generate two conditional

函数原型：static inline bool __ref_is_percpu(struct percpu_ref *ref, unsigned long __percpu **percpu_countp)

返回类型：bool

参数：

类型	参数	名称
struct percpu_ref *	ref
unsigned long __percpu **	percpu_countp

**调用者**
名称	描述
percpu_ref_resurrect	percpu_ref_resurrect - modify a percpu refcount from dead to live@ref: perpcu_ref to resurrect Modify @ref so that it's in the same state as before percpu_ref_kill() was* called
percpu_ref_get_many	percpu计数
percpu_ref_tryget	percpu_ref_tryget - try to increment a percpu refcount@ref: percpu_ref to try-get Increment a percpu refcount unless its count already reached zero.* Returns %true on success; %false on failure.
percpu_ref_tryget_live	percpu_ref_tryget_live - try to increment a live percpu refcount@ref: percpu_ref to try-get Increment a percpu refcount unless it has already been killed
percpu_ref_put_many	percpu_ref_put_many - decrement a percpu refcount@ref: percpu_ref to put@nr: number of references to put* Decrement the refcount, and if 0, call the release function (which was passed* to percpu_ref_init())
percpu_ref_is_zero	判断percpu无计数引用

函数逻辑报告