| /****************************************************************************** | |
| * Xen balloon functionality | |
| */ | |
| #define RETRY_UNLIMITED 0 | |
| struct balloon_stats { | |
| /* We aim for 'current allocation' == 'target allocation'. */ | |
| unsigned long current_pages; | |
| unsigned long target_pages; | |
| unsigned long target_unpopulated; | |
| /* Number of pages in high- and low-memory balloons. */ | |
| unsigned long balloon_low; | |
| unsigned long balloon_high; | |
| unsigned long total_pages; | |
| unsigned long schedule_delay; | |
| unsigned long max_schedule_delay; | |
| unsigned long retry_count; | |
| unsigned long max_retry_count; | |
| }; | |
| extern struct balloon_stats balloon_stats; | |
| void balloon_set_new_target(unsigned long target); | |
| int alloc_xenballooned_pages(int nr_pages, struct page **pages); | |
| void free_xenballooned_pages(int nr_pages, struct page **pages); | |
| struct device; | |
| #ifdef CONFIG_XEN_SELFBALLOONING | |
| extern int register_xen_selfballooning(struct device *dev); | |
| #else | |
| static inline int register_xen_selfballooning(struct device *dev) | |
| { | |
| return -ENOSYS; | |
| } | |
| #endif | |
| #ifdef CONFIG_XEN_BALLOON | |
| void xen_balloon_init(void); | |
| #else | |
| static inline void xen_balloon_init(void) | |
| { | |
| } | |
| #endif |