Jason Wang points out that it's vary hard for users to build an array of
stat names. The naive thing is to use VIRTIO_BALLOON_S_NR but that
breaks if we add more stats.
Let's add an array of reasonably readable names.
Fixes: 6c64fe7f2 ("virtio_balloon: export hugetlb page allocation counts")
Cc: Jason Wang <jasowang@xxxxxxxxxx>
Cc: Jonathan Helman <jonathan.helman@xxxxxxxxxx>,
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
include/uapi/linux/virtio_balloon.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/include/uapi/linux/virtio_balloon.h b/include/uapi/linux/virtio_balloon.h
index 9e02137..1477c17 100644
--- a/include/uapi/linux/virtio_balloon.h
+++ b/include/uapi/linux/virtio_balloon.h
@@ -64,6 +64,21 @@ struct virtio_balloon_config {
#define VIRTIO_BALLOON_S_HTLB_PGFAIL 9 /* Hugetlb page allocation failures */
#define VIRTIO_BALLOON_S_NR 10
+#define VIRTIO_BALLOON_S_NAMES_WITH_PREFIX(VIRTIO_BALLOON_S_NAMES_prefix) { \
+ VIRTIO_BALLOON_S_NAMES_prefix "swap-in", \
+ VIRTIO_BALLOON_S_NAMES_prefix "swap-out", \
+ VIRTIO_BALLOON_S_NAMES_prefix "major-faults", \
+ VIRTIO_BALLOON_S_NAMES_prefix "minor-faults", \
+ VIRTIO_BALLOON_S_NAMES_prefix "free-memory", \
+ VIRTIO_BALLOON_S_NAMES_prefix "total-memory", \
+ VIRTIO_BALLOON_S_NAMES_prefix "available-memory", \
+ VIRTIO_BALLOON_S_NAMES_prefix "disk-caches", \
+ VIRTIO_BALLOON_S_NAMES_prefix "hugetlb-allocations", \
+ VIRTIO_BALLOON_S_NAMES_prefix "hugetlb-failures" \
+}
+
+#define VIRTIO_BALLOON_S_NAMES VIRTIO_BALLOON_S_NAMES_WITH_PREFIX("")
+
/*
* Memory statistics structure.
* Driver fills an array of these structures and passes to device.
--
MST
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