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| author |   Jing Zhang <jingzhangos@google.com> | 2021-08-02 16:56:32 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-08-20 16:06:33 -0400 |
| commit | 87bcc5fa092f82a9890f9e73e4f4c7016ef64049 (patch) | |
| tree | c9c80d92eca31439b443fb9d8e5b04b868880435 /virt/kvm | |
| parent | KVM: selftests: Add checks for histogram stats bucket_size field (diff) | |
| download | linux-dev-87bcc5fa092f82a9890f9e73e4f4c7016ef64049.tar.xz linux-dev-87bcc5fa092f82a9890f9e73e4f4c7016ef64049.zip | |
KVM: stats: Add halt_wait_ns stats for all architectures
Add simple stats halt_wait_ns to record the time a VCPU has spent on
waiting for all architectures (not just powerpc).
Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210802165633.1866976-5-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/kvm_main.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 8563d9b725af..e6fc579bb454 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3241,6 +3241,10 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu) } finish_rcuwait(&vcpu->wait); cur = ktime_get(); + if (waited) { + vcpu->stat.generic.halt_wait_ns += + ktime_to_ns(cur) - ktime_to_ns(poll_end); + } out: kvm_arch_vcpu_unblocking(vcpu); block_ns = ktime_to_ns(cur) - ktime_to_ns(start); |