函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\locking\lockdep.c Create Date:2022-07-27 10:49:42
Last Modify:2020-03-17 14:16:01 Copyright©Brick
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函数名称：Turn lock debugging off and return with 0 if it was off already,* and also release the graph lock:

函数原型：static inline int debug_locks_off_graph_unlock(void)

返回类型：int

参数：无

129  ret等于Generic 'turn off all lock debugging' function:
131  arch_spin_unlock( & lockdep_lock: protects the lockdep graph, the hashes and the* class/list/hash allocators.* This is one of the rare exceptions where it's justified* to use a raw spinlock - we really dont want the spinlock* code to recurse back into the lockdep code...)
133  返回:ret
调用者
名称描述
register_lock_classRegister a lock's class in the hash-table, if the class is not present* yet. Otherwise we look it up. We cache the result in the lock object* itself, so actual lookup of the hash should be once per lock object.