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/usr/src/linux-aws-headers-4.15.0-1057/include/xen/balloon.h
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/* SPDX-License-Identifier: GPL-2.0 */ /****************************************************************************** * 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
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