函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\resource.c Create Date:2022-07-27 10:05:26
Last Modify:2022-05-22 11:14:39 Copyright©Brick
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函数名称：reserve_setup

函数原型：static int __init reserve_setup(char *str)

返回类型：int

参数：

类型参数名称
char *str
1491  循环
1493  x等于reserved
1496  如果get_option - Parse integer from an option string*@str: option string*@pint: (output) integer value parsed from @str* Read an int from an option string; if available accept a subsequent* comma as well不等于2则退出
1498  如果get_option - Parse integer from an option string*@str: option string*@pint: (output) integer value parsed from @str* Read an int from an option string; if available accept a subsequent* comma as well恒等于0则退出
1500  如果x小于Reserve I/O ports or memory based on "reserve=" kernel parameter.则
1501  res等于reserve加x
1507  如果io_start小于0x10000则
1510  否则
1511  flags等于IORESOURCE_MEM
1512  parent等于iomem_resource
1514  name等于"reserved"
1515  start等于io_start
1516  end等于io_start加io_num减1
1517  flags或等于Driver has marked this resource busy
1518  desc等于IORES_DESC_NONE
1519  child = NULL
1520  如果quest_resource - request and reserve an I/O or memory resource*@root: root resource descriptor*@new: resource descriptor desired by caller* Returns 0 for success, negative error code on error.恒等于0则reserved等于x加1
1524  返回:1