| #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. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of IBM nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL IBM OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. */ |
| #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 */ |
