| #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 */ |
