函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\page_alloc.c Create Date:2022-07-27 16:37:27
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：memmap_init

函数原型：void __meminit __weak memmap_init(unsigned long size, int nid, unsigned long zone, unsigned long start_pfn)

返回类型：void

参数：

类型参数名称
unsigned longsize
intnid
unsigned longzone
unsigned longstart_pfn
6010  Initially all pages are reserved - free ones are freed* up by memblock_free_all() once the early boot process is* done. Non-atomic initialization, single-pass.
调用者
名称描述
free_area_init_coreSet up the zone data structures:* - mark all pages reserved* - mark all memory queues empty* - clear the memory bitmaps* NOTE: pgdat should get zeroed by caller.* NOTE: this function is only called during early init.