2008-02-05 12:50:12 +08:00
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#ifndef _LINUX_VIRTIO_BALLOON_H
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#define _LINUX_VIRTIO_BALLOON_H
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2008-07-26 01:06:03 +08:00
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/* This header is BSD licensed so anyone can use the definitions to implement
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* compatible drivers/servers. */
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2009-09-30 17:17:21 +08:00
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#include <linux/virtio_ids.h>
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2008-02-05 12:50:12 +08:00
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#include <linux/virtio_config.h>
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/* The feature bitmap for virtio balloon */
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#define VIRTIO_BALLOON_F_MUST_TELL_HOST 0 /* Tell before reclaiming pages */
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2009-12-01 00:14:15 +08:00
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#define VIRTIO_BALLOON_F_STATS_VQ 1 /* Memory Stats virtqueue */
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2008-02-05 12:50:12 +08:00
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2008-11-14 05:48:33 +08:00
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/* Size of a PFN in the balloon interface. */
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#define VIRTIO_BALLOON_PFN_SHIFT 12
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2008-02-05 12:50:12 +08:00
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struct virtio_balloon_config
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{
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/* Number of pages host wants Guest to give up. */
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__le32 num_pages;
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/* Number of pages we've actually got in balloon. */
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__le32 actual;
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};
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2009-12-01 00:14:15 +08:00
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#define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */
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#define VIRTIO_BALLOON_S_SWAP_OUT 1 /* Amount of memory swapped out */
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#define VIRTIO_BALLOON_S_MAJFLT 2 /* Number of major faults */
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#define VIRTIO_BALLOON_S_MINFLT 3 /* Number of minor faults */
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#define VIRTIO_BALLOON_S_MEMFREE 4 /* Total amount of free memory */
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#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
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#define VIRTIO_BALLOON_S_NR 6
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struct virtio_balloon_stat {
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u16 tag;
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u64 val;
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} __attribute__((packed));
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2008-02-05 12:50:12 +08:00
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#endif /* _LINUX_VIRTIO_BALLOON_H */
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