Balloon header includes:
- feature bit for Working Set Reporting
- number of Working Set bins member in balloon config
- types for communicating Working Set information
Signed-off-by: T.J. Alumbaugh <talum...@google.com>
---
.../standard-headers/linux/virtio_balloon.h | 20 +++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/include/standard-headers/linux/virtio_balloon.h
b/include/standard-headers/linux/virtio_balloon.h
index f343bfefd8..df61eaceee 100644
--- a/include/standard-headers/linux/virtio_balloon.h
+++ b/include/standard-headers/linux/virtio_balloon.h
@@ -37,6 +37,7 @@
#define VIRTIO_BALLOON_F_FREE_PAGE_HINT 3 /* VQ to report free pages */
#define VIRTIO_BALLOON_F_PAGE_POISON 4 /* Guest is using page poisoning */
#define VIRTIO_BALLOON_F_REPORTING 5 /* Page reporting virtqueue */
+#define VIRTIO_BALLOON_F_WS_REPORTING 6 /* Working set report virtqueues */
/* Size of a PFN in the balloon interface. */
#define VIRTIO_BALLOON_PFN_SHIFT 12
@@ -59,6 +60,9 @@ struct virtio_balloon_config {
};
/* Stores PAGE_POISON if page poisoning is in use */
uint32_t poison_val;
+ /* Stores the number of histogram bins if WS reporting in use */
+ uint8_t working_set_num_bins;
+ uint8_t padding[3];
};
#define VIRTIO_BALLOON_S_SWAP_IN 0 /* Amount of memory swapped in */
@@ -116,4 +120,20 @@ struct virtio_balloon_stat {
__virtio64 val;
} QEMU_PACKED;
+enum virtio_balloon_working_set_op {
+ VIRTIO_BALLOON_WS_REQUEST = 1, /* a Working Set request from the host */
+ VIRTIO_BALLOON_WS_CONFIG = 2, /* a Working Set config from the host */
+};
+
+struct virtio_balloon_working_set {
+ /* A tag for additional metadata */
+ __virtio16 tag;
+ /* The NUMA node for this report. */
+ __virtio16 node_id;
+ uint8_t reserved[4];
+ __virtio64 idle_age_ms;
+ /* A bin each for anonymous and file-backed memory. */
+ __virtio64 memory_size_bytes[2];
+} QEMU_PACKED;
+
#endif /* _LINUX_VIRTIO_BALLOON_H */
--
2.41.0.rc0.172.g3f132b7071-goog
