函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace.c Create Date:2022-07-27 13:07:50
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：tracing_release_pipe

函数原型：static int tracing_release_pipe(struct inode *inode, struct file *file)

返回类型：int

参数：

类型参数名称
struct inode *inode
struct file *file
6008  iter等于 needed for tty driver, and maybe others
6009  tr等于s or device private pointer
6011  mutex_lock( & race_types_lock is used to protect the trace_types list.)
6013  ref自减
6015  如果pipe_close则pipe_close(iter)
6018  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.
6020  释放CPU掩码
6021  mutex_destroy - mark a mutex unusable*@lock: the mutex to be destroyed* This function marks the mutex uninitialized, and any subsequent* use of the mutex is forbidden. The mutex must not be locked when* this function is called.
6022  kfree(iter)
6024  race_array_put - Decrement the reference counter for this trace array.* NOTE: Use this when we no longer need the trace array returned by* trace_array_get_by_name(). This ensures the trace array can be later* destroyed.
6026  返回:0