diff options
| author | Jing Zhang <jingzhangos@google.com> | 2021-08-02 16:56:33 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-08-20 16:06:33 -0400 |
| commit | 8ccba534a1a5c6565220c81113d6157571f380cb (patch) | |
| tree | 97477fd66bb78bfde851b94edda51f9513aac4c2 /include/linux/kvm_types.h | |
| parent | 87bcc5fa092f82a9890f9e73e4f4c7016ef64049 (diff) | |
KVM: stats: Add halt polling related histogram stats
Add three log histogram stats to record the distribution of time spent
on successful polling, failed polling and VCPU wait.
halt_poll_success_hist: Distribution of spent time for a successful poll.
halt_poll_fail_hist: Distribution of spent time for a failed poll.
halt_wait_hist: Distribution of time a VCPU has spent on waiting.
Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210802165633.1866976-6-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/kvm_types.h')
| -rw-r--r-- | include/linux/kvm_types.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h index 291ef55125b2..de7fb5f364d8 100644 --- a/include/linux/kvm_types.h +++ b/include/linux/kvm_types.h @@ -76,6 +76,8 @@ struct kvm_mmu_memory_cache { }; #endif +#define HALT_POLL_HIST_COUNT 32 + struct kvm_vm_stat_generic { u64 remote_tlb_flush; }; @@ -88,6 +90,9 @@ struct kvm_vcpu_stat_generic { u64 halt_poll_success_ns; u64 halt_poll_fail_ns; u64 halt_wait_ns; + u64 halt_poll_success_hist[HALT_POLL_HIST_COUNT]; + u64 halt_poll_fail_hist[HALT_POLL_HIST_COUNT]; + u64 halt_wait_hist[HALT_POLL_HIST_COUNT]; }; #define KVM_STATS_NAME_SIZE 48 |