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1 | #ifndef _LINUX_VIRTIO_BALLOON_H |
2 | #define _LINUX_VIRTIO_BALLOON_H | |
674bfc23 RR |
3 | /* This header is BSD licensed so anyone can use the definitions to implement |
4 | * compatible drivers/servers. */ | |
e95646c3 | 5 | #include <linux/virtio_ids.h> |
6b35e407 RR |
6 | #include <linux/virtio_config.h> |
7 | ||
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8 | /* The feature bitmap for virtio balloon */ |
9 | #define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */ | |
9564e138 | 10 | #define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory Stats virtqueue */ |
6b35e407 | 11 | |
1b4aa2fa HB |
12 | /* Size of a PFN in the balloon interface. */ |
13 | #define VIRTIO_BALLOON_PFN_SHIFT 12 | |
14 | ||
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15 | struct virtio_balloon_config |
16 | { | |
17 | /* Number of pages host wants Guest to give up. */ | |
18 | __le32 num_pages; | |
19 | /* Number of pages we've actually got in balloon. */ | |
20 | __le32 actual; | |
21 | }; | |
9564e138 AL |
22 | |
23 | #define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */ | |
24 | #define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */ | |
25 | #define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */ | |
26 | #define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */ | |
27 | #define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */ | |
28 | #define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */ | |
29 | #define VIRTIO_BALLOON_S_NR 6 | |
30 | ||
31 | struct virtio_balloon_stat { | |
32 | u16 tag; | |
33 | u64 val; | |
34 | } __attribute__((packed)); | |
35 | ||
6b35e407 | 36 | #endif /* _LINUX_VIRTIO_BALLOON_H */ |