virtio_balloon: export hugetlb page allocation counts

Export the number of successful and failed hugetlb page allocations via the virtio balloon driver. These 2 counts come directly from the vm_events HTLB_BUDDY_PGALLOC and HTLB_BUDDY_PGALLOC_FAIL.

Jonathan Helman committed 8 years ago

Commit 6c64fe71 parent dc32bb62 files · +9 −1Browse files

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include/uapi/linux/virtio_balloon.h+3−1

@@ -53,7 +53,9 @@ struct virtio_balloon_config { · 52 unmodified lines
53	53	#define VIRTIO_BALLOON_S_MEMTOT 5 /* Total amount of memory */
54	54	#define VIRTIO_BALLOON_S_AVAIL 6 /* Available memory as in /proc */
55	55	#define VIRTIO_BALLOON_S_CACHES 7 /* Disk caches */
56		−#define VIRTIO_BALLOON_S_NR 8
	56	+#define VIRTIO_BALLOON_S_HTLB_PGALLOC 8 /* Hugetlb page allocations */
	57	+#define VIRTIO_BALLOON_S_HTLB_PGFAIL 9 /* Hugetlb page allocation failures */
	58	+#define VIRTIO_BALLOON_S_NR 10
57	59
58	60	/*
59	61	* Memory statistics structure.