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board-support
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linux-4.9.59+gitAUTOINC+a75d8e9305-ga75d8e9305
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include
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xen
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balloon.h

balloon.h 1.0 KB
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  1. /******************************************************************************
    2. 

  2.  * Xen balloon functionality
    3. 

  3.  */
    4. 

  4. 

  5. #define RETRY_UNLIMITED	0
    6. 

  6. 

  7. struct balloon_stats {
    8. 

  8. 	/* We aim for 'current allocation' == 'target allocation'. */
    9. 

  9. 	unsigned long current_pages;
    10. 

  10. 	unsigned long target_pages;
    11. 

  11. 	unsigned long target_unpopulated;
    12. 

  12. 	/* Number of pages in high- and low-memory balloons. */
    13. 

  13. 	unsigned long balloon_low;
    14. 

  14. 	unsigned long balloon_high;
    15. 

  15. 	unsigned long total_pages;
    16. 

  16. 	unsigned long schedule_delay;
    17. 

  17. 	unsigned long max_schedule_delay;
    18. 

  18. 	unsigned long retry_count;
    19. 

  19. 	unsigned long max_retry_count;
    20. 

  20. };
    21. 

  21. 

  22. extern struct balloon_stats balloon_stats;
    23. 

  23. 

  24. void balloon_set_new_target(unsigned long target);
    25. 

  25. 

  26. int alloc_xenballooned_pages(int nr_pages, struct page **pages);
    27. 

  27. void free_xenballooned_pages(int nr_pages, struct page **pages);
    28. 

  28. 

  29. struct device;
    30. 

  30. #ifdef CONFIG_XEN_SELFBALLOONING
    31. 

  31. extern int register_xen_selfballooning(struct device *dev);
    32. 

  32. #else
    33. 

  33. static inline int register_xen_selfballooning(struct device *dev)
    34. 

  34. {
    35. 

  35. 	return -ENOSYS;
    36. 

  36. }
    37. 

  37. #endif
    38.