2011-03-14 22:29:37 +07:00
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/******************************************************************************
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* Xen balloon functionality
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*/
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#define RETRY_UNLIMITED 0
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struct balloon_stats {
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/* We aim for 'current allocation' == 'target allocation'. */
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unsigned long current_pages;
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unsigned long target_pages;
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2015-06-25 22:29:18 +07:00
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unsigned long target_unpopulated;
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2011-03-14 22:29:37 +07:00
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/* Number of pages in high- and low-memory balloons. */
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unsigned long balloon_low;
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unsigned long balloon_high;
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2015-06-25 18:08:20 +07:00
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unsigned long total_pages;
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2011-03-14 22:29:37 +07:00
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unsigned long schedule_delay;
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unsigned long max_schedule_delay;
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unsigned long retry_count;
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unsigned long max_retry_count;
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};
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extern struct balloon_stats balloon_stats;
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void balloon_set_new_target(unsigned long target);
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2011-03-15 21:23:57 +07:00
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2015-06-25 19:12:46 +07:00
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int alloc_xenballooned_pages(int nr_pages, struct page **pages);
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2011-09-29 17:57:55 +07:00
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void free_xenballooned_pages(int nr_pages, struct page **pages);
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2011-07-09 01:26:21 +07:00
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2011-12-15 06:32:50 +07:00
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struct device;
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2011-07-09 01:26:21 +07:00
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#ifdef CONFIG_XEN_SELFBALLOONING
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2011-12-15 06:32:50 +07:00
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extern int register_xen_selfballooning(struct device *dev);
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2011-07-09 01:26:21 +07:00
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#else
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2011-12-15 06:32:50 +07:00
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static inline int register_xen_selfballooning(struct device *dev)
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2011-07-09 01:26:21 +07:00
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{
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return -ENOSYS;
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}
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#endif
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2017-07-10 15:10:45 +07:00
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#ifdef CONFIG_XEN_BALLOON
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void xen_balloon_init(void);
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#else
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static inline void xen_balloon_init(void)
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{
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}
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#endif
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