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/* SPDX-License-Identifier: GPL-2.0 */
/******************************************************************************
* Xen balloon functionality
*/
#ifndef _XEN_BALLOON_H
#define _XEN_BALLOON_H
#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 xen_alloc_ballooned_pages(unsigned int nr_pages, struct page **pages);
void xen_free_ballooned_pages(unsigned int nr_pages, struct page **pages);
#ifdef CONFIG_XEN_BALLOON
void xen_balloon_init(void);
#else
static inline void xen_balloon_init(void)
{
}
#endif
#endif /* _XEN_BALLOON_H */
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