projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 803eb047 DDG |
2 | /****************************************************************************** |
| 3 | * Xen balloon functionality | |
| 4 | */ | |
| aecb2016 RPM |
5 | #ifndef _XEN_BALLOON_H |
| 6 | #define _XEN_BALLOON_H | |
| 803eb047 DDG |
7 | |
| 8 | #define RETRY_UNLIMITED 0 | |
| 9 | ||
| 10 | struct balloon_stats { | |
| 11 | /* We aim for 'current allocation' == 'target allocation'. */ | |
| 12 | unsigned long current_pages; | |
| 13 | unsigned long target_pages; | |
| 1cf6a6c8 | 14 | unsigned long target_unpopulated; |
| 803eb047 DDG |
15 | /* Number of pages in high- and low-memory balloons. */ |
| 16 | unsigned long balloon_low; | |
| 17 | unsigned long balloon_high; | |
| de5a77d8 | 18 | unsigned long total_pages; |
| 803eb047 DDG |
19 | unsigned long schedule_delay; |
| 20 | unsigned long max_schedule_delay; | |
| 21 | unsigned long retry_count; | |
| 22 | unsigned long max_retry_count; | |
| 23 | }; | |
| 24 | ||
| 25 | extern struct balloon_stats balloon_stats; | |
| 26 | ||
| 27 | void balloon_set_new_target(unsigned long target); | |
| b6f30679 | 28 | |
| 9dd060af OT |
29 | int xen_alloc_ballooned_pages(unsigned int nr_pages, struct page **pages); |
| 30 | void xen_free_ballooned_pages(unsigned int nr_pages, struct page **pages); | |
| 31 | ||
| 96edd61d JG |
32 | #ifdef CONFIG_XEN_BALLOON |
| 33 | void xen_balloon_init(void); | |
| 34 | #else | |
| 35 | static inline void xen_balloon_init(void) | |
| 36 | { | |
| 37 | } | |
| 38 | #endif | |
| aecb2016 RPM |
39 | |
| 40 | #endif /* _XEN_BALLOON_H */ |