KVM: arm/arm64: show halt poll counters in debugfs
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Message ID 1572164390-5851-1-git-send-email-borntraeger@de.ibm.com
State New
Headers show
Series
  • KVM: arm/arm64: show halt poll counters in debugfs
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Commit Message

Christian Borntraeger Oct. 27, 2019, 8:19 a.m. UTC
ARM/ARM64 has counters halt_successful_poll, halt_attempted_poll,
halt_poll_invalid, and halt_wakeup but never exposed those in debugfs.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
This patch is untested
 arch/arm/kvm/guest.c   | 4 ++++
 arch/arm64/kvm/guest.c | 4 ++++
 2 files changed, 8 insertions(+)

Comments

Marc Zyngier Oct. 29, 2019, 10:23 a.m. UTC | #1
On Sun, 27 Oct 2019 08:19:50 +0000,
Christian Borntraeger <borntraeger@de.ibm.com> wrote:

Hi Christian,

> ARM/ARM64 has counters halt_successful_poll, halt_attempted_poll,
> halt_poll_invalid, and halt_wakeup but never exposed those in debugfs.
> 
> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
> ---
> This patch is untested

Seems to do the right thing on arm64:

halt_attempted_poll:8106331
halt_poll_invalid:0
halt_successful_poll:1440219
halt_wakeup:21835894

Applied to -next.

Thanks,

	M.

Patch
diff mbox series

diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c
index 684cf64..6696464 100644
--- a/arch/arm/kvm/guest.c
+++ b/arch/arm/kvm/guest.c
@@ -21,6 +21,10 @@ 
 #define VCPU_STAT(x) { #x, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU }
 
 struct kvm_stats_debugfs_item debugfs_entries[] = {
+	VCPU_STAT(halt_successful_poll),
+	VCPU_STAT(halt_attempted_poll),
+	VCPU_STAT(halt_poll_invalid),
+	VCPU_STAT(halt_wakeup),
 	VCPU_STAT(hvc_exit_stat),
 	VCPU_STAT(wfe_exit_stat),
 	VCPU_STAT(wfi_exit_stat),
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index dfd6264..260ea31 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -34,6 +34,10 @@ 
 #define VCPU_STAT(x) { #x, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU }
 
 struct kvm_stats_debugfs_item debugfs_entries[] = {
+	VCPU_STAT(halt_successful_poll),
+	VCPU_STAT(halt_attempted_poll),
+	VCPU_STAT(halt_poll_invalid),
+	VCPU_STAT(halt_wakeup),
 	VCPU_STAT(hvc_exit_stat),
 	VCPU_STAT(wfe_exit_stat),
 	VCPU_STAT(wfi_exit_stat),