atomic_dec_and_mutex

函数名称：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

函数原型：int atomic_dec_and_mutex_lock(atomic_t *cnt, struct mutex *lock)

返回类型：int

参数：

类型	参数	名称
atomic_t *	cnt
struct mutex *	lock

1469

如果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.则返回:0

1472

mutex_lock(lock)

1473

如果非atomic_dec_and_test(cnt)则

1475

mutex_unlock - release the mutex*@lock: the mutex to be released* Unlock a mutex that has been locked by this task previously.* This function must not be used in interrupt context. Unlocking* of a not locked mutex is not allowed.

1476

返回:0

1479

返回:1

**调用者**
名称	描述
perf_mmap_close	A buffer can be mmap()ed multiple times; either directly through the same* event, or through other events by use of perf_event_set_output().* In order to undo the VM accounting done by perf_mmap() we need to destroy
put_callchain_buffers

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告