函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\e820.c Create Date:2022-07-27 08:43:18
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：e820__reserve_resources

函数原型：void __init e820__reserve_resources(void)

返回类型：void

参数：无

1127  res等于memblock_alloc(res的长度 * nr_entries, SMP_CACHE_BYTES)
1129  如果非res则panic - halt the system*@fmt: The text string to print* Display a message, then perform cleanups.* This function never returns.
1132  Mark E820 reserved areas as busy for the resource manager:等于res
1134  以i小于nr_entries循环
1135  entry等于entries加i
1137  end等于addr加size减1
1138  如果end不等于end则
1139  res自加
1140  继续下一循环
1142  start等于addr
1143  end等于end
1144  name等于e820_type_to_string(entry)
1145  flags等于e820_type_to_iomem_type(entry)
1146  desc等于e820_type_to_iores_desc(entry)
1153  如果do_mark_busy(type, res)则
1154  flags或等于Driver has marked this resource busy
1155  insert_resource( & iomem_resource, res)
1157  res自加
1161  以i小于nr_entries循环
1162  entry等于entries加i
1164  provide a dummy interface if CONFIG_FIRMWARE_MEMMAP is disabled
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