diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
---|---|---|
committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /include/linux/virtio_balloon.h | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'include/linux/virtio_balloon.h')
-rw-r--r-- | include/linux/virtio_balloon.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/include/linux/virtio_balloon.h b/include/linux/virtio_balloon.h new file mode 100644 index 00000000000..652dc8bea92 --- /dev/null +++ b/include/linux/virtio_balloon.h | |||
@@ -0,0 +1,59 @@ | |||
1 | #ifndef _LINUX_VIRTIO_BALLOON_H | ||
2 | #define _LINUX_VIRTIO_BALLOON_H | ||
3 | /* This header is BSD licensed so anyone can use the definitions to implement | ||
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. */ | ||
28 | #include <linux/virtio_ids.h> | ||
29 | #include <linux/virtio_config.h> | ||
30 | |||
31 | /* The feature bitmap for virtio balloon */ | ||
32 | #define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */ | ||
33 | #define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory Stats virtqueue */ | ||
34 | |||
35 | /* Size of a PFN in the balloon interface. */ | ||
36 | #define VIRTIO_BALLOON_PFN_SHIFT 12 | ||
37 | |||
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 | }; | ||
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 | |||
59 | #endif /* _LINUX_VIRTIO_BALLOON_H */ | ||