Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __LINUX_PAGEISOLATION_H
3#define __LINUX_PAGEISOLATION_H
4
5#ifdef CONFIG_MEMORY_ISOLATION
6static inline bool has_isolate_pageblock(struct zone *zone)
7{
8 return zone->nr_isolate_pageblock;
9}
10static inline bool is_migrate_isolate_page(struct page *page)
11{
12 return get_pageblock_migratetype(page) == MIGRATE_ISOLATE;
13}
14static inline bool is_migrate_isolate(int migratetype)
15{
16 return migratetype == MIGRATE_ISOLATE;
17}
18#else
19static inline bool has_isolate_pageblock(struct zone *zone)
20{
21 return false;
22}
23static inline bool is_migrate_isolate_page(struct page *page)
24{
25 return false;
26}
27static inline bool is_migrate_isolate(int migratetype)
28{
29 return false;
30}
31#endif
32
33#define MEMORY_OFFLINE 0x1
34#define REPORT_FAILURE 0x2
35
36struct page *has_unmovable_pages(struct zone *zone, struct page *page,
37 int migratetype, int flags);
38void set_pageblock_migratetype(struct page *page, int migratetype);
39int move_freepages_block(struct zone *zone, struct page *page,
40 int migratetype, int *num_movable);
41
42/*
43 * Changes migrate type in [start_pfn, end_pfn) to be MIGRATE_ISOLATE.
44 */
45int
46start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
47 unsigned migratetype, int flags);
48
49/*
50 * Changes MIGRATE_ISOLATE to MIGRATE_MOVABLE.
51 * target range is [start_pfn, end_pfn)
52 */
53void
54undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
55 unsigned migratetype);
56
57/*
58 * Test all pages in [start_pfn, end_pfn) are isolated or not.
59 */
60int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
61 int isol_flags);
62
63struct page *alloc_migrate_target(struct page *page, unsigned long private);
64
65#endif