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authorJonathan Helman <jonathan.helman@oracle.com>2018-03-20 01:14:14 +0300
committerMichael S. Tsirkin <mst@redhat.com>2018-04-10 21:23:55 +0300
commit6c64fe7f2adcee21d7c4247f1ec021fd18428fc4 (patch)
treefd2830b8ed3334508e088771b9745f6be259e7cf /drivers/virtio
parentdc32bb678e103afbcfa4d814489af0566307f528 (diff)
downloadlinux-6c64fe7f2adcee21d7c4247f1ec021fd18428fc4.tar.xz
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. Signed-off-by: Jonathan Helman <jonathan.helman@oracle.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'drivers/virtio')
-rw-r--r--drivers/virtio/virtio_balloon.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index dfe5684000be..6b237e3f4983 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -272,6 +272,12 @@ static unsigned int update_balloon_stats(struct virtio_balloon *vb)
pages_to_bytes(events[PSWPOUT]));
update_stat(vb, idx++, VIRTIO_BALLOON_S_MAJFLT, events[PGMAJFAULT]);
update_stat(vb, idx++, VIRTIO_BALLOON_S_MINFLT, events[PGFAULT]);
+#ifdef CONFIG_HUGETLB_PAGE
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGALLOC,
+ events[HTLB_BUDDY_PGALLOC]);
+ update_stat(vb, idx++, VIRTIO_BALLOON_S_HTLB_PGFAIL,
+ events[HTLB_BUDDY_PGALLOC_FAIL]);
+#endif
#endif
update_stat(vb, idx++, VIRTIO_BALLOON_S_MEMFREE,
pages_to_bytes(i.freeram));