From 58622197571d5160c6cb7f95a112f87ee604f703 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tom=C3=A1=C5=A1=20Golembiovsk=C3=BD?= Date: Thu, 22 Feb 2018 13:50:52 +0100 Subject: content: document balloon memory statistics MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Linux kernel provides some balloon memory statistics that were not included in the specs. Include them to avoid any ID clashes in the future. Signed-off-by: Tomáš Golembiovský Signed-off-by: Michael S. Tsirkin Fixes: https://github.com/oasis-tcs/virtio-spec/issues/4 Approved-by: https://www.oasis-open.org/apps/org/workgroup/virtio/ballot.php?id=3180 --- content.tex | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/content.tex b/content.tex index 2e75b5e..7fa9a65 100644 --- a/content.tex +++ b/content.tex @@ -4513,6 +4513,8 @@ struct virtio_balloon_stat { #define VIRTIO_BALLOON_S_MINFLT 3 #define VIRTIO_BALLOON_S_MEMFREE 4 #define VIRTIO_BALLOON_S_MEMTOT 5 +#define VIRTIO_BALLOON_S_AVAIL 6 +#define VIRTIO_BALLOON_S_CACHES 7 le16 tag; le64 val; } __attribute__((packed)); @@ -4594,6 +4596,13 @@ first buffer. \item[VIRTIO_BALLOON_S_MEMTOT (5)] The total amount of memory available (in bytes). + +\item[VIRTIO_BALLOON_S_AVAIL (6)] An estimate of how much memory is available + (in bytes) for starting new applications, without pushing the system to swap. + +\item[VIRTIO_BALLOON_S_CACHES (7)] The amount of memory, in bytes, that can be + quickly reclaimed without additional I/O. Typically these pages are used for + caching files from disk. \end{description} \section{SCSI Host Device}\label{sec:Device Types / SCSI Host Device} -- cgit v1.2.3