projects / linux.git / blame
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| 6b35e407 RR |
1 | #ifndef _LINUX_VIRTIO_BALLOON_H |
| 2 | #define _LINUX_VIRTIO_BALLOON_H | |
| 674bfc23 | 3 | /* This header is BSD licensed so anyone can use the definitions to implement |
| a1b38387 RR |
4 | * compatible drivers/servers. |
| 5 | * | |
| 6 | * Redistribution and use in source and binary forms, with or without | |
| 7 | * modification, are permitted provided that the following conditions | |
| 8 | * are met: | |
| 9 | * 1. Redistributions of source code must retain the above copyright | |
| 10 | * notice, this list of conditions and the following disclaimer. | |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 12 | * notice, this list of conditions and the following disclaimer in the | |
| 13 | * documentation and/or other materials provided with the distribution. | |
| 14 | * 3. Neither the name of IBM nor the names of its contributors | |
| 15 | * may be used to endorse or promote products derived from this software | |
| 16 | * without specific prior written permission. | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND | |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE | |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 27 | * SUCH DAMAGE. */ | |
| e95646c3 | 28 | #include <linux/virtio_ids.h> |
| 6b35e407 RR |
29 | #include <linux/virtio_config.h> |
| 30 | ||
| 6b35e407 RR |
31 | /* The feature bitmap for virtio balloon */ |
| 32 | #define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */ | |
| 9564e138 | 33 | #define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory Stats virtqueue */ |
| 6b35e407 | 34 | |
| 1b4aa2fa HB |
35 | /* Size of a PFN in the balloon interface. */ |
| 36 | #define VIRTIO_BALLOON_PFN_SHIFT 12 | |
| 37 | ||
| 6b35e407 RR |
38 | struct virtio_balloon_config |
| 39 | { | |
| 40 | /* Number of pages host wants Guest to give up. */ | |
| 41 | __le32 num_pages; | |
| 42 | /* Number of pages we've actually got in balloon. */ | |
| 43 | __le32 actual; | |
| 44 | }; | |
| 9564e138 AL |
45 | |
| 46 | #define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */ | |
| 47 | #define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */ | |
| 48 | #define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */ | |
| 49 | #define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */ | |
| 50 | #define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */ | |
| 51 | #define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */ | |
| 52 | #define VIRTIO_BALLOON_S_NR 6 | |
| 53 | ||
| 54 | struct virtio_balloon_stat { | |
| 55 | u16 tag; | |
| 56 | u64 val; | |
| 57 | } __attribute__((packed)); | |
| 58 | ||
| 6b35e407 | 59 | #endif /* _LINUX_VIRTIO_BALLOON_H */ |