External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-01-03 03:25:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

qemu_driver: add the vCPU stats by KVM to the current stats

Browse Source 
This patch adds the stats queried by qemuMonitorQueryStats for vCPU and
add them according to their QOM device path

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>
This commit is contained in:
Amneesh Singh 2022-09-07 16:04:22 +05:30 committed by Martin Kletzander
parent b86c77dff2
commit 0f867a3831
1 changed files with 83 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

83
src/qemu/qemu_driver.c
View File

@ -17951,6 +17951,67 @@ qemuDomainGetStatsBalloon(virQEMUDriver *driver G_GNUC_UNUSED,
}
static void
qemuDomainAddStatsFromHashTable(GHashTable *stats,
GHashTable *schema,
const char *prefix,
virTypedParamList *params)
{
GHashTableIter iter;
virJSONValue *value;
const char *key;
if (!stats || !schema)
return;
g_hash_table_iter_init(&iter, stats);
while (g_hash_table_iter_next(&iter, (gpointer *)&key, (gpointer *)&value)) {
qemuMonitorQueryStatsSchemaData *data = g_hash_table_lookup(schema, key);
const char *type = NULL;
if (!data)
continue;
switch (data->type) {
case QEMU_MONITOR_QUERY_STATS_TYPE_CUMULATIVE:
type = "sum";
break;
case QEMU_MONITOR_QUERY_STATS_TYPE_INSTANT:
type = "cur";
break;
case QEMU_MONITOR_QUERY_STATS_TYPE_PEAK:
type = "max";
break;
case QEMU_MONITOR_QUERY_STATS_TYPE_LOG2_HISTOGRAM:
case QEMU_MONITOR_QUERY_STATS_TYPE_LINEAR_HISTOGRAM:
case QEMU_MONITOR_QUERY_STATS_TYPE_LAST:
continue;
}
if (data->unit == QEMU_MONITOR_QUERY_STATS_UNIT_BOOLEAN) {
bool stat;
if (virJSONValueGetBoolean(value, &stat) < 0)
continue;
ignore_value(virTypedParamListAddBoolean(params, stat, "%s.%s.%s",
prefix, key, type));
} else {
unsigned long long stat;
if (virJSONValueGetNumberUlong(value, &stat) < 0)
continue;
ignore_value(virTypedParamListAddULLong(params, stat, "%s.%s.%s",
prefix, key, type));
}
}
}
static int
qemuDomainGetStatsVcpu(virQEMUDriver *driver G_GNUC_UNUSED,
virDomainObj *dom,
@ -17964,6 +18025,8 @@ qemuDomainGetStatsVcpu(virQEMUDriver *driver G_GNUC_UNUSED,
virVcpuInfoPtr cpuinfo = NULL;
g_autofree unsigned long long *cpuwait = NULL;
g_autofree unsigned long long *cpudelay = NULL;
qemuDomainObjPrivate *priv = dom->privateData;
g_autoptr(virJSONValue) queried_stats = NULL;
if (virTypedParamListAddUInt(params, virDomainDefGetVcpus(dom->def),
"vcpu.current") < 0)
@ -17992,7 +18055,19 @@ qemuDomainGetStatsVcpu(virQEMUDriver *driver G_GNUC_UNUSED,
goto cleanup;
}
if (HAVE_JOB(privflags) && qemuDomainRefreshStatsSchema(dom) == 0) {
qemuDomainObjEnterMonitor(dom);
queried_stats = qemuMonitorQueryStats(priv->mon,
QEMU_MONITOR_QUERY_STATS_TARGET_VCPU,
NULL, NULL);
qemuDomainObjExitMonitor(dom);
}
for (i = 0; i < virDomainDefGetVcpus(dom->def); i++) {
virJSONValue *stat_obj = NULL;
g_autoptr(GHashTable) stats = NULL;
g_autofree char *prefix = g_strdup_printf("vcpu.%u", cpuinfo[i].number);
if (virTypedParamListAddInt(params, cpuinfo[i].state,
"vcpu.%u.state", cpuinfo[i].number) < 0)
goto cleanup;
@ -18026,6 +18101,14 @@ qemuDomainGetStatsVcpu(virQEMUDriver *driver G_GNUC_UNUSED,
cpuinfo[i].number) < 0)
goto cleanup;
}
if (!queried_stats)
continue;
stat_obj = qemuMonitorGetStatsByQOMPath(queried_stats, vcpupriv->qomPath);
stats = qemuMonitorExtractQueryStats(stat_obj);
qemuDomainAddStatsFromHashTable(stats, priv->statsSchema, prefix, params);
}
ret = 0;