tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/******************************************************************************
2 * Xen balloon functionality
3 */
4
5#define RETRY_UNLIMITED 0
6
7struct balloon_stats {
8 /* We aim for 'current allocation' == 'target allocation'. */
9 unsigned long current_pages;
10 unsigned long target_pages;
11 /* Number of pages in high- and low-memory balloons. */
12 unsigned long balloon_low;
13 unsigned long balloon_high;
14 unsigned long schedule_delay;
15 unsigned long max_schedule_delay;
16 unsigned long retry_count;
17 unsigned long max_retry_count;
18#ifdef CONFIG_XEN_BALLOON_MEMORY_HOTPLUG
19 unsigned long hotplug_pages;
20 unsigned long balloon_hotplug;
21#endif
22};
23
24extern struct balloon_stats balloon_stats;
25
26void balloon_set_new_target(unsigned long target);
27
28int alloc_xenballooned_pages(int nr_pages, struct page** pages);
29void free_xenballooned_pages(int nr_pages, struct page** pages);
30
31struct sys_device;
32#ifdef CONFIG_XEN_SELFBALLOONING
33extern int register_xen_selfballooning(struct sys_device *sysdev);
34#else
35static inline int register_xen_selfballooning(struct sys_device *sysdev)
36{
37 return -ENOSYS;
38}
39#endif