37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
#ifndef _LINUX_VIRTIO_BALLOON_H
|
|
#define _LINUX_VIRTIO_BALLOON_H
|
|
/* This header is BSD licensed so anyone can use the definitions to implement
|
|
* compatible drivers/servers. */
|
|
#include <linux/virtio_ids.h>
|
|
#include <linux/virtio_config.h>
|
|
|
|
/* The feature bitmap for virtio balloon */
|
|
#define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */
|
|
#define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory Stats virtqueue */
|
|
|
|
/* Size of a PFN in the balloon interface. */
|
|
#define VIRTIO_BALLOON_PFN_SHIFT 12
|
|
|
|
struct virtio_balloon_config
|
|
{
|
|
/* Number of pages host wants Guest to give up. */
|
|
__le32 num_pages;
|
|
/* Number of pages we've actually got in balloon. */
|
|
__le32 actual;
|
|
};
|
|
|
|
#define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */
|
|
#define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */
|
|
#define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */
|
|
#define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */
|
|
#define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */
|
|
#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
|
|
#define VIRTIO_BALLOON_S_NR 6
|
|
|
|
struct virtio_balloon_stat {
|
|
u16 tag;
|
|
u64 val;
|
|
} __attribute__((packed));
|
|
|
|
#endif /* _LINUX_VIRTIO_BALLOON_H */
|