函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\cpu\resctrl\ctrlmondata.c Create Date:2022-07-27 09:12:48
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Check whether MBA bandwidth percentage value is correct. The value is* checked against the minimum and maximum bandwidth values specified by* the hardware. The allocated bandwidth percentage is rounded to the next* control step available on the hardware.

函数原型：static bool bw_validate_amd(char *buf, unsigned long *data, struct rdt_resource *r)

返回类型：bool

参数：

类型参数名称
char *buf
unsigned long *data
struct rdt_resource *r
36  ret等于kstrtoul - convert a string to an unsigned long*@s: The start of the string. The string must be null-terminated, and may also* include a single newline before its terminating null. The first character* may also be a plus sign, but not a minus sign.
37  如果ret则
38  rdt_last_cmd_printf("Non-decimal digit in MB value %s\n", buf)
39  返回:false
42  如果bw小于min_bw或bw大于default_ctrl则
43  rdt_last_cmd_printf("MB value %ld out of range [%d,%d]\n", bw, min_bw, default_ctrl)
45  返回:false
48  data等于undup - round up to the next specified multiple*@x: the value to up*@y: multiple to round up to* Rounds @x up to next multiple of @y. If @y will always be a power* of 2, consider using the faster round_up().(bw, (unsignedlong)bw_gran)
49  返回:true
调用者
名称描述
parse_bw_amd