Function report |
Source Code:mm\vmalloc.c |
Create Date:2022-07-28 14:58:40 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Merge de-allocated chunk of VA memory with previous* and next free blocks. If coalesce is not done a new* free area is inserted. If VA has been merged, it is* freed.
Proto:static __always_inline struct vmap_area *merge_or_add_vmap_area(struct vmap_area *va, struct rb_root *root, struct list_head *head)
Type:struct vmap_area
Parameter:
Type | Parameter | Name |
---|---|---|
struct vmap_area * | va | |
struct rb_root * | root | |
struct list_head * | head |
694 | bool merged = false |
700 | link = This function returns back addresses of parent node* and its left or right link for further processing. |
705 | next = get_va_next_sibling(parent, link) |
706 | If Value for the false possibility is greater at compile time(next == NULL) Then Go to insert |
760 | insert : |
761 | If Not merged Then |
766 | Return va |
Name | Describe |
---|---|
free_vmap_area | Free a region of KVA allocated by alloc_vmap_area |
__purge_vmap_area_lazy | Purges all lazily-freed vmap areas. |
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