projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 |