Cregit: Linux 6.9: balloon.h

Contributors: 10
Author	Tokens	Token Proportion	Commits	Commit Proportion
Jeremy Fitzhardinge	40	32.00%	1	8.33%
Daniel Kiper	20	16.00%	1	8.33%
Roger Pau Monné	17	13.60%	2	16.67%
Juergen Gross	15	12.00%	1	8.33%
Konrad Rzeszutek Wilk	9	7.20%	1	8.33%
David Vrabel	8	6.40%	2	16.67%
Dan Magenheimer	7	5.60%	1	8.33%
Daniel De Graaf	5	4.00%	1	8.33%
Oleksandr Tyshchenko	3	2.40%	1	8.33%
Greg Kroah-Hartman	1	0.80%	1	8.33%
Total	125		12

/* 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 */