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kvm: add support for boolean statistics

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The next version of Linux will introduce boolean statistics, which
can only have 0 or 1 values.  Convert them to the new QAPI fields
added in the previous commit.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2022-07-14 14:10:22 +02:00
parent 1ca1a7ec36
commit 105bb7cdbe
2 changed files with 10 additions and 1 deletions
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10
accel/kvm/kvm-all.c
View File

@ -3743,6 +3743,7 @@ static StatsList *add_kvmstat_entry(struct kvm_stats_desc *pdesc,
case KVM_STATS_UNIT_BYTES:
case KVM_STATS_UNIT_CYCLES:
case KVM_STATS_UNIT_SECONDS:
case KVM_STATS_UNIT_BOOLEAN:
break;
default:
return stats_list;
@ -3761,7 +3762,10 @@ static StatsList *add_kvmstat_entry(struct kvm_stats_desc *pdesc,
stats->name = g_strdup(pdesc->name);
stats->value = g_new0(StatsValue, 1);;
if (pdesc->size == 1) {
if ((pdesc->flags & KVM_STATS_UNIT_MASK) == KVM_STATS_UNIT_BOOLEAN) {
stats->value->u.boolean = *stats_data;
stats->value->type = QTYPE_QBOOL;
} else if (pdesc->size == 1) {
stats->value->u.scalar = *stats_data;
stats->value->type = QTYPE_QNUM;
} else {
@ -3809,6 +3813,10 @@ static StatsSchemaValueList *add_kvmschema_entry(struct kvm_stats_desc *pdesc,
switch (pdesc->flags & KVM_STATS_UNIT_MASK) {
case KVM_STATS_UNIT_NONE:
break;
case KVM_STATS_UNIT_BOOLEAN:
schema_entry->value->has_unit = true;
schema_entry->value->unit = STATS_UNIT_BOOLEAN;
break;
case KVM_STATS_UNIT_BYTES:
schema_entry->value->has_unit = true;
schema_entry->value->unit = STATS_UNIT_BYTES;

1
linux-headers/linux/kvm.h
View File

@ -2031,6 +2031,7 @@ struct kvm_stats_header {
#define KVM_STATS_UNIT_BYTES (0x1 << KVM_STATS_UNIT_SHIFT)
#define KVM_STATS_UNIT_SECONDS (0x2 << KVM_STATS_UNIT_SHIFT)
#define KVM_STATS_UNIT_CYCLES (0x3 << KVM_STATS_UNIT_SHIFT)
#define KVM_STATS_UNIT_BOOLEAN (0x4 << KVM_STATS_UNIT_SHIFT)
#define KVM_STATS_UNIT_MAX KVM_STATS_UNIT_CYCLES
#define KVM_STATS_BASE_SHIFT 8