| | 1 | /****************************************************************************** |
| | 2 | * Xen balloon functionality |
| | 3 | */ |
| | 4 | |
| | 5 | #define RETRY_UNLIMITED 0 |
| | 6 | |
| | 7 | struct balloon_stats { |
| | 8 | /* We aim for 'current allocation' == 'target allocation'. */ |
| | 9 | unsigned long current_pages; |
| | 10 | unsigned long target_pages; |
| | 11 | unsigned long target_unpopulated; |
| | 12 | /* Number of pages in high- and low-memory balloons. */ |
| | 13 | unsigned long balloon_low; |
| | 14 | unsigned long balloon_high; |
| | 15 | unsigned long total_pages; |
| | 16 | unsigned long schedule_delay; |
| | 17 | unsigned long max_schedule_delay; |
| | 18 | unsigned long retry_count; |
| | 19 | unsigned long max_retry_count; |
| | 20 | }; |
| | 21 | |
| | 22 | extern struct balloon_stats balloon_stats; |
| | 23 | |
| | 24 | void balloon_set_new_target(unsigned long target); |
| | 25 | |
| | 26 | int alloc_xenballooned_pages(int nr_pages, struct page **pages); |
| | 27 | void free_xenballooned_pages(int nr_pages, struct page **pages); |
| | 28 | |
| | 29 | struct device; |
| | 30 | #ifdef CONFIG_XEN_SELFBALLOONING |
| | 31 | extern int register_xen_selfballooning(struct device *dev); |
| | 32 | #else |
| | 33 | static inline int register_xen_selfballooning(struct device *dev) |
| | 34 | { |
| | 35 | return -ENOSYS; |
| | 36 | } |
| | 37 | #endif |
| | 38 | |
| | 39 | #ifdef CONFIG_XEN_BALLOON |
| | 40 | void xen_balloon_init(void); |
| | 41 | #else |
| | 42 | static inline void xen_balloon_init(void) |
| | 43 | { |
| | 44 | } |
| | 45 | #endif |
projects / mirror_ubuntu-artful-kernel.git / blame_incremental