函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\trace\trace_stack.c Create Date:2022-07-27 13:18:28
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:stack_max_size_read

函数原型:static ssize_t stack_max_size_read(struct file *filp, char __user *ubuf, size_t count, loff_t *ppos)

返回类型:ssize_t

参数:

类型参数名称
struct file *filp
char __user *ubuf
size_tcount
loff_t *ppos
328  ptr等于 needed for tty driver, and maybe others
332  r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*@
333  如果r大于buf的长度则r等于buf的长度
335  返回:simple_read_from_buffer(ubuf, count, ppos, buf, r)