41 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/******************************************************************************3 * Xen balloon functionality4 */5#ifndef _XEN_BALLOON_H6#define _XEN_BALLOON_H7 8#define RETRY_UNLIMITED 09 10struct balloon_stats {11 /* We aim for 'current allocation' == 'target allocation'. */12 unsigned long current_pages;13 unsigned long target_pages;14 unsigned long target_unpopulated;15 /* Number of pages in high- and low-memory balloons. */16 unsigned long balloon_low;17 unsigned long balloon_high;18 unsigned long total_pages;19 unsigned long schedule_delay;20 unsigned long max_schedule_delay;21 unsigned long retry_count;22 unsigned long max_retry_count;23};24 25extern struct balloon_stats balloon_stats;26 27void balloon_set_new_target(unsigned long target);28 29int xen_alloc_ballooned_pages(unsigned int nr_pages, struct page **pages);30void xen_free_ballooned_pages(unsigned int nr_pages, struct page **pages);31 32#ifdef CONFIG_XEN_BALLOON33void xen_balloon_init(void);34#else35static inline void xen_balloon_init(void)36{37}38#endif39 40#endif /* _XEN_BALLOON_H */41