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| author | Igor Redko | 2016-03-17 22:19:08 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2016-03-17 23:09:34 +0100 |
| commit | 5057dcd0f1aaad57e07e728ba20a99e205c6b9de (patch) | |
| tree | 2c8a3d6fc364777226e03a664e2b824ad8f5dfe1 /include/uapi/linux/virtio_balloon.h | |
| parent | mm/page_alloc.c: calculate 'available' memory in a separate function (diff) | |
| download | kernel-qcow2-linux-5057dcd0f1aaad57e07e728ba20a99e205c6b9de.tar.gz kernel-qcow2-linux-5057dcd0f1aaad57e07e728ba20a99e205c6b9de.tar.xz kernel-qcow2-linux-5057dcd0f1aaad57e07e728ba20a99e205c6b9de.zip | |
virtio_balloon: export 'available' memory to balloon statistics
Add a new field, VIRTIO_BALLOON_S_AVAIL, to virtio_balloon memory
statistics protocol, corresponding to 'Available' in /proc/meminfo.
It indicates to the hypervisor how big the balloon can be inflated
without pushing the guest system to swap.
Signed-off-by: Igor Redko <redkoi@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/uapi/linux/virtio_balloon.h')
| -rw-r--r-- | include/uapi/linux/virtio_balloon.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h index d7f1cbc3766c..343d7ddefe04 100644 --- a/include/uapi/linux/virtio_balloon.h +++ b/include/uapi/linux/virtio_balloon.h @@ -51,7 +51,8 @@ struct virtio_balloon_config { #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 +#define VIRTIO_BALLOON_S_AVAIL 6 /* Available memory as in /proc */ +#define VIRTIO_BALLOON_S_NR 7 /* * Memory statistics structure. |