bwlp/qemu.git/docs/virtio-balloon-stats.txt, branch spice_video_codecs

docs: reSTify virtio-balloon-stats documentation and move to docs/interop

2022-01-08T00:30:13+00:00

The virtio-balloon-stats documentation might be useful for people that are implementing software that talks to QEMU via QMP, so this should reside in the docs/interop/ directory. While we're at it, also convert the file to restructured text and mention it in the MAINTAINERS file. Signed-off-by: Thomas Huth Message-Id: <20220105115245.420945-1-thuth@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin

Remove the deprecated -balloon option

2018-08-31T07:52:13+00:00

The "-balloon" option has been replaced by "-device virtio-balloon". It's been marked as deprecated since two releases, and nobody complained, so let's remove it now. Acked-by: Paolo Bonzini Reviewed-by: Daniel P. Berrangé Reviewed-by: Cornelia Huck Reviewed-by: Michael S. Tsirkin Reviewed-by: David Hildenbrand Acked-by: Peter Krempa Acked-by: Ján Tomko Signed-off-by: Thomas Huth

virtio-balloon: add hugetlb page allocation counts

2018-05-23T00:14:40+00:00

qemu should read and report hugetlb page allocation counts exported in the following kernel patch: commit 4c3ca37c4a4394978fd0f005625f6064ed2b9a64 Author: Jonathan Helman Date: Mon Mar 19 11:00:35 2018 -0700 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 Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Jason Wang

docs: document virtio-balloon stats

2018-03-01T14:25:37+00:00

Document statistics added in commits commit a0d06486b445985b8d128df172daefbae205bffd Author: Denis V. Lunev Date: Wed Feb 24 10:50:48 2016 +0300 virtio-balloon: add 'available' counter and commit bf1e7140ef0b3a149860ab9f05b36665133238f6 Author: Tomáš Golembiovský Date: Tue Dec 5 13:14:46 2017 +0100 virtio-balloon: include statistics of disk/file caches Signed-off-by: Tomáš Golembiovský Reviewed-by: Jonathan Helman Reviewed-by: Stefan Hajnoczi Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin

virtio-balloon: return empty data when no stats are available

2014-05-25T09:46:58+00:00

If the guest hasn't updated the stats yet, instead of returning an error, return '-1' for the stats and '0' as 'last-update'. This lets applications ignore this without parsing the error message. Related libvirt patch and discussion: https://www.redhat.com/archives/libvir-list/2014-May/msg00460.html Tested against current upstream libvirt - stat reporting works and it no longer logs errors when the stats are queried on domain startup. (Note: libvirt doesn't use the last-update field for anything yet) Signed-off-by: Ján Tomko Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Eric Blake

docs: document virtio-balloon stats

2013-01-25T12:49:46+00:00

Signed-off-by: Luiz Capitulino Reviewed-by: Eric Blake