函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\char_dev.c Create Date:2022-07-29 10:32:39
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：chrdev_show

函数原型：void chrdev_show(struct seq_file *f, off_t offset)

返回类型：void

参数：

类型参数名称
struct seq_file *f
off_toffset
55  mutex_lock( & chrdevs_lock)
56  以cd循环
57  如果major恒等于offset则seq_printf(f, "%3d %s\n", major, name)
60  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.