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authorPaolo Bonzini <pbonzini@redhat.com>2022-04-26 14:59:44 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2022-06-14 16:50:30 +0200
commit467ef823d83ed7ba68cc92e1a23938726b8c4e9d (patch)
treee63eddb9b4aa7cf667440c1d5bdb334bce070b59 /qapi
parentcc01a3f4cadd91e63c4ebf9774069321afd8a4e0 (diff)
qmp: add filtering of statistics by target vCPU
Introduce a simple filtering of statistics, that allows to retrieve statistics for a subset of the guest vCPUs. This will be used for example by the HMP monitor, in order to retrieve the statistics for the currently selected CPU. Example: { "execute": "query-stats", "arguments": { "target": "vcpu", "vcpus": [ "/machine/unattached/device[2]", "/machine/unattached/device[4]" ] } } Extracted from a patch by Mark Kanda. Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qapi')
-rw-r--r--qapi/stats.json20
1 files changed, 17 insertions, 3 deletions
diff --git a/qapi/stats.json b/qapi/stats.json
index df7c4d886c..8c9abb57f1 100644
--- a/qapi/stats.json
+++ b/qapi/stats.json
@@ -70,15 +70,29 @@
'data': [ 'vm', 'vcpu' ] }
##
+# @StatsVCPUFilter:
+#
+# @vcpus: list of QOM paths for the desired vCPU objects.
+#
+# Since: 7.1
+##
+{ 'struct': 'StatsVCPUFilter',
+ 'data': { '*vcpus': [ 'str' ] } }
+
+##
# @StatsFilter:
#
# The arguments to the query-stats command; specifies a target for which to
-# request statistics.
+# request statistics and optionally the required subset of information for
+# that target:
+# - which vCPUs to request statistics for
#
# Since: 7.1
##
-{ 'struct': 'StatsFilter',
- 'data': { 'target': 'StatsTarget' } }
+{ 'union': 'StatsFilter',
+ 'base': { 'target': 'StatsTarget' },
+ 'discriminator': 'target',
+ 'data': { 'vcpu': 'StatsVCPUFilter' } }
##
# @StatsValue: