forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
66 lines
1.6 KiB
66 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef __LINUX_BOOTMEM_INFO_H |
|
#define __LINUX_BOOTMEM_INFO_H |
|
|
|
#include <linux/mm.h> |
|
|
|
/* |
|
* Types for free bootmem stored in page->lru.next. These have to be in |
|
* some random range in unsigned long space for debugging purposes. |
|
*/ |
|
enum { |
|
MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE = 12, |
|
SECTION_INFO = MEMORY_HOTPLUG_MIN_BOOTMEM_TYPE, |
|
MIX_SECTION_INFO, |
|
NODE_INFO, |
|
MEMORY_HOTPLUG_MAX_BOOTMEM_TYPE = NODE_INFO, |
|
}; |
|
|
|
#ifdef CONFIG_HAVE_BOOTMEM_INFO_NODE |
|
void __init register_page_bootmem_info_node(struct pglist_data *pgdat); |
|
|
|
void get_page_bootmem(unsigned long info, struct page *page, |
|
unsigned long type); |
|
void put_page_bootmem(struct page *page); |
|
|
|
/* |
|
* Any memory allocated via the memblock allocator and not via the |
|
* buddy will be marked reserved already in the memmap. For those |
|
* pages, we can call this function to free it to buddy allocator. |
|
*/ |
|
static inline void free_bootmem_page(struct page *page) |
|
{ |
|
unsigned long magic = (unsigned long)page->freelist; |
|
|
|
/* |
|
* The reserve_bootmem_region sets the reserved flag on bootmem |
|
* pages. |
|
*/ |
|
VM_BUG_ON_PAGE(page_ref_count(page) != 2, page); |
|
|
|
if (magic == SECTION_INFO || magic == MIX_SECTION_INFO) |
|
put_page_bootmem(page); |
|
else |
|
VM_BUG_ON_PAGE(1, page); |
|
} |
|
#else |
|
static inline void register_page_bootmem_info_node(struct pglist_data *pgdat) |
|
{ |
|
} |
|
|
|
static inline void put_page_bootmem(struct page *page) |
|
{ |
|
} |
|
|
|
static inline void get_page_bootmem(unsigned long info, struct page *page, |
|
unsigned long type) |
|
{ |
|
} |
|
|
|
static inline void free_bootmem_page(struct page *page) |
|
{ |
|
free_reserved_page(page); |
|
} |
|
#endif |
|
|
|
#endif /* __LINUX_BOOTMEM_INFO_H */
|
|
|