函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\kexec_core.c Create Date:2022-07-27 12:04:36
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：crash_notes_memory_init

函数原型：static int __init crash_notes_memory_init(void)

返回类型：int

参数：无

1096  size等于sizeof(note_buf_t)
1097  align等于两数取小(undup_pow_of_two - round the given value up to nearest power of two*@n: parameter* round the given value up to the nearest power of two* - the result is undefined when n == 0* - this can be used to initialise global variables from constant data(sizeof(note_buf_t)), PAGE_SIZE)
1103  BUILD_BUG_ON - break compile if a condition is true(size > PAGE_SIZE)
1105  Per cpu memory for storing cpu states in case of system crash. 等于做一个当前的副本
1106  如果非Per cpu memory for storing cpu states in case of system crash. 则
1107  打印警告信息("Memory allocation for saving cpu register states failed\n")
1108  返回:负ENOMEM
1110  返回:0