debian/patches/pve/0006-virtio-balloon-fix-query.patch

   1 From 5921bc0360f6964a5bb5355c2707c806425f4734 Mon Sep 17 00:00:00 2001
   2 From: Wolfgang Bumiller <w.bumiller@proxmox.com>
   3 Date: Wed, 9 Dec 2015 14:27:49 +0100
   4 Subject: [PATCH 06/47] virtio-balloon: fix query
   5
   6 Actually provide memory information via the query-balloon
   7 command.
   8 ---
   9  hmp.c                      | 30 +++++++++++++++++++++++++++++-
  10  hw/virtio/virtio-balloon.c | 33 +++++++++++++++++++++++++++++++--
  11  qapi-schema.json           | 23 +++++++++++++++++++++--
  12  3 files changed, 81 insertions(+), 5 deletions(-)
  13
  14 diff --git a/hmp.c b/hmp.c
  15 index edb8970..904542d 100644
  16 --- a/hmp.c
  17 +++ b/hmp.c
  18 @@ -723,7 +723,35 @@ void hmp_info_balloon(Monitor *mon, const QDict *qdict)
  19          return;
  20      }
  21
  22 -    monitor_printf(mon, "balloon: actual=%" PRId64 "\n", info->actual >> 20);
  23 +    monitor_printf(mon, "balloon: actual=%" PRId64, info->actual >> 20);
  24 +    monitor_printf(mon, " max_mem=%" PRId64, info->max_mem >> 20);
  25 +    if (info->has_total_mem) {
  26 +        monitor_printf(mon, " total_mem=%" PRId64, info->total_mem >> 20);
  27 +    }
  28 +    if (info->has_free_mem) {
  29 +        monitor_printf(mon, " free_mem=%" PRId64, info->free_mem >> 20);
  30 +    }
  31 +
  32 +    if (info->has_mem_swapped_in) {
  33 +        monitor_printf(mon, " mem_swapped_in=%" PRId64, info->mem_swapped_in);
  34 +    }
  35 +    if (info->has_mem_swapped_out) {
  36 +        monitor_printf(mon, " mem_swapped_out=%" PRId64, info->mem_swapped_out);
  37 +    }
  38 +    if (info->has_major_page_faults) {
  39 +        monitor_printf(mon, " major_page_faults=%" PRId64,
  40 +                       info->major_page_faults);
  41 +    }
  42 +    if (info->has_minor_page_faults) {
  43 +        monitor_printf(mon, " minor_page_faults=%" PRId64,
  44 +                       info->minor_page_faults);
  45 +    }
  46 +    if (info->has_last_update) {
  47 +        monitor_printf(mon, " last_update=%" PRId64,
  48 +                       info->last_update);
  49 +    }
  50 +
  51 +    monitor_printf(mon, "\n");
  52
  53      qapi_free_BalloonInfo(info);
  54  }
  55 diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c
  56 index a705e0e..158e13e 100644
  57 --- a/hw/virtio/virtio-balloon.c
  58 +++ b/hw/virtio/virtio-balloon.c
  59 @@ -379,8 +379,37 @@ static uint64_t virtio_balloon_get_features(VirtIODevice *vdev, uint64_t f,
  60  static void virtio_balloon_stat(void *opaque, BalloonInfo *info)
  61  {
  62      VirtIOBalloon *dev = opaque;
  63 -    info->actual = get_current_ram_size() - ((uint64_t) dev->actual <<
  64 -                                             VIRTIO_BALLOON_PFN_SHIFT);
  65 +    ram_addr_t ram_size = get_current_ram_size();
  66 +    info->actual = ram_size - ((uint64_t) dev->actual <<
  67 +                               VIRTIO_BALLOON_PFN_SHIFT);
  68 +
  69 +    info->max_mem = ram_size;
  70 +
  71 +    if (!(balloon_stats_enabled(dev) && balloon_stats_supported(dev) &&
  72 +           dev->stats_last_update)) {
  73 +       return;
  74 +    }
  75 +
  76 +    info->last_update = dev->stats_last_update;
  77 +    info->has_last_update = true;
  78 +
  79 +    info->mem_swapped_in = dev->stats[VIRTIO_BALLOON_S_SWAP_IN];
  80 +    info->has_mem_swapped_in = info->mem_swapped_in >= 0 ? true : false;
  81 +
  82 +    info->mem_swapped_out = dev->stats[VIRTIO_BALLOON_S_SWAP_OUT];
  83 +    info->has_mem_swapped_out = info->mem_swapped_out >= 0 ? true : false;
  84 +
  85 +    info->major_page_faults = dev->stats[VIRTIO_BALLOON_S_MAJFLT];
  86 +    info->has_major_page_faults = info->major_page_faults >= 0 ? true : false;
  87 +
  88 +    info->minor_page_faults = dev->stats[VIRTIO_BALLOON_S_MINFLT];
  89 +    info->has_minor_page_faults = info->minor_page_faults >= 0 ? true : false;
  90 +
  91 +    info->free_mem = dev->stats[VIRTIO_BALLOON_S_MEMFREE];
  92 +    info->has_free_mem = info->free_mem >= 0 ? true : false;
  93 +
  94 +    info->total_mem = dev->stats[VIRTIO_BALLOON_S_MEMTOT];
  95 +    info->has_total_mem = info->total_mem >= 0 ? true : false;
  96  }
  97
  98  static void virtio_balloon_to_target(void *opaque, ram_addr_t target)
  99 diff --git a/qapi-schema.json b/qapi-schema.json
 100 index b921994..e7a8117 100644
 101 --- a/qapi-schema.json
 102 +++ b/qapi-schema.json
 103 @@ -1900,10 +1900,29 @@
 104  #
 105  # @actual: the number of bytes the balloon currently contains
 106  #
 107 -# Since: 0.14.0
 108 +# @last_update: time when stats got updated from guest
 109 +#
 110 +# @mem_swapped_in: number of pages swapped in within the guest
 111 +#
 112 +# @mem_swapped_out: number of pages swapped out within the guest
 113 +#
 114 +# @major_page_faults: number of major page faults within the guest
 115  #
 116 +# @minor_page_faults: number of minor page faults within the guest
 117 +#
 118 +# @free_mem: amount of memory (in bytes) free in the guest
 119 +#
 120 +# @total_mem: amount of memory (in bytes) visible to the guest
 121 +#
 122 +# @max_mem: amount of memory (in bytes) assigned to the guest
 123 +#
 124 +# Since: 0.14.0
 125  ##
 126 -{ 'struct': 'BalloonInfo', 'data': {'actual': 'int' } }
 127 +{ 'struct': 'BalloonInfo',
 128 +  'data': {'actual': 'int', '*last_update': 'int', '*mem_swapped_in': 'int',
 129 +           '*mem_swapped_out': 'int', '*major_page_faults': 'int',
 130 +           '*minor_page_faults': 'int', '*free_mem': 'int',
 131 +           '*total_mem': 'int', 'max_mem': 'int' } }
 132
 133  ##
 134  # @query-balloon:
 135 --
 136 2.1.4
 137