函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\padata.c Create Date:2022-07-27 15:09:29
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：show_cpumask

函数原型：static ssize_t show_cpumask(struct padata_instance *pinst, struct attribute *attr, char *buf)

返回类型：ssize_t

参数：

类型参数名称
struct padata_instance *pinst
struct attribute *attr
char *buf
857  mutex_lock( & lock)
858  如果非字符串比较则cpumask等于cbcpu
860  否则cpumask等于pcpu
863  len等于snprintf - Format a string and place it in a buffer*@buf: The buffer to place the result into*@size: The size of the buffer, including the trailing null space*@fmt: The format string to use*@
865  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.
866  返回:如果len小于PAGE_SIZE则len否则负EINVAL