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 13:09:56
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称:buffer_percent_write

函数原型:static ssize_t buffer_percent_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos)

返回类型:ssize_t

参数:

类型参数名称
struct file *filp
const char __user *ubuf
size_tcnt
loff_t *ppos
8332  tr等于 needed for tty driver, and maybe others
8336  ret等于kstrtoul_from_user(ubuf, cnt, 10, & val)
8337  如果ret则返回:ret
8340  如果val大于100则返回:负EINVAL
8343  如果非valval等于1
8346  buffer_percent等于val
8348  ppos自加
8350  返回:cnt