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authorPaolo Bonzini <pbonzini@redhat.com>2022-07-14 07:27:31 -0400
committerPaolo Bonzini <pbonzini@redhat.com>2022-07-14 08:01:59 -0400
commit1b870fa5573e260bc74d19f381ab0dd971a8d8e7 (patch)
treeb69d78017e58e7d341c4d56603ce21d488d09c75 /arch
parent84e7051c0bc1f2a13101553959b3a9d9a8e24939 (diff)
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kvm: stats: tell userspace which values are boolean
Some of the statistics values exported by KVM are always only 0 or 1. It can be useful to export this fact to userspace so that it can track them specially (for example by polling the value every now and then to compute a % of time spent in a specific state). Therefore, add "boolean value" as a new "unit". While it is not exactly a unit, it walks and quacks like one. In particular, using the type would be wrong because boolean values could be instantaneous or peak values (e.g. "is the rmap allocated?") or even two-bucket histograms (e.g. "number of posted vs. non-posted interrupt injections"). Suggested-by: Amneesh Singh <natto@weirdnatto.in> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/x86.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 26d0cac32f73..0c3e85e8fce9 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -298,7 +298,7 @@ const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = {
STATS_DESC_COUNTER(VCPU, directed_yield_successful),
STATS_DESC_COUNTER(VCPU, preemption_reported),
STATS_DESC_COUNTER(VCPU, preemption_other),
- STATS_DESC_ICOUNTER(VCPU, guest_mode)
+ STATS_DESC_IBOOLEAN(VCPU, guest_mode)
};
const struct kvm_stats_header kvm_vcpu_stats_header = {