memmap_init_zone

Name: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.

Proto:void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone, unsigned long start_pfn, enum memmap_context context, struct vmem_altmap *altmap)

Type:void

Parameter:

Type	Parameter	Name
unsigned long	size
int	nid
unsigned long	zone
unsigned long	start_pfn
enum memmap_context	context
struct vmem_altmap *	altmap

5860

end_pfn = start_pfn + size

5863

If highest_memmap_pfn < end_pfn - 1 Then highest_memmap_pfn = end_pfn - 1

5884

When pfn < end_pfn cycle

5889

If context == MEMMAP_EARLY Then

5890

If Not early_pfn_valid(pfn) Then Continue

5892

If Not early_pfn_in_nid(pfn, nid) Then Continue

5894

If If zone is ZONE_MOVABLE but memory is mirrored, it is an overlapped init Then Continue

5896

If defer_init(nid, pfn, end_pfn) Then Break

5900

page = pfn_to_page(pfn)

5901

__init_single_page(page, pfn, zone, nid)

5902

If context == MEMMAP_HOTPLUG Then __SetPageReserved(page)

5917

If Not (pfn & pageblock_nr_pages - 1 ) Then

5918

set_pageblock_migratetype(page, MIGRATE_MOVABLE)

5919

**Caller**
Name	Describe
memmap_init

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