Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
803eb047 DDG |
2 | /****************************************************************************** |
3 | * Xen balloon functionality | |
4 | */ | |
5 | ||
6 | #define RETRY_UNLIMITED 0 | |
7 | ||
8 | struct balloon_stats { | |
9 | /* We aim for 'current allocation' == 'target allocation'. */ | |
10 | unsigned long current_pages; | |
11 | unsigned long target_pages; | |
1cf6a6c8 | 12 | unsigned long target_unpopulated; |
803eb047 DDG |
13 | /* Number of pages in high- and low-memory balloons. */ |
14 | unsigned long balloon_low; | |
15 | unsigned long balloon_high; | |
de5a77d8 | 16 | unsigned long total_pages; |
803eb047 DDG |
17 | unsigned long schedule_delay; |
18 | unsigned long max_schedule_delay; | |
19 | unsigned long retry_count; | |
20 | unsigned long max_retry_count; | |
21 | }; | |
22 | ||
23 | extern struct balloon_stats balloon_stats; | |
24 | ||
25 | void balloon_set_new_target(unsigned long target); | |
b6f30679 | 26 | |
81b286e0 | 27 | int alloc_xenballooned_pages(int nr_pages, struct page **pages); |
693394b8 | 28 | void free_xenballooned_pages(int nr_pages, struct page **pages); |
a50777c7 | 29 | |
07068021 | 30 | struct device; |
a50777c7 | 31 | #ifdef CONFIG_XEN_SELFBALLOONING |
07068021 | 32 | extern int register_xen_selfballooning(struct device *dev); |
a50777c7 | 33 | #else |
07068021 | 34 | static inline int register_xen_selfballooning(struct device *dev) |
a50777c7 DM |
35 | { |
36 | return -ENOSYS; | |
37 | } | |
38 | #endif | |
96edd61d JG |
39 | |
40 | #ifdef CONFIG_XEN_BALLOON | |
41 | void xen_balloon_init(void); | |
42 | #else | |
43 | static inline void xen_balloon_init(void) | |
44 | { | |
45 | } | |
46 | #endif | |
b3cf8528 BO |
47 | |
48 | #ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG | |
49 | struct resource; | |
50 | void arch_xen_balloon_init(struct resource *hostmem_resource); | |
51 | #endif |