diff options
| author | Jing Zhang <jingzhangos@google.com> | 2021-06-18 22:27:06 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-24 18:00:19 -0400 |
| commit | ce55c049459cff0034cc1bcfdce3bf343a2d6317 (patch) | |
| tree | cd3edc030d355ea7d871220124e25e8c60885f0a /include/linux/kvm_host.h | |
| parent | fcfe1baeddbf1c7c448b44c82586d0cbc8abc9f5 (diff) | |
KVM: stats: Support binary stats retrieval for a VCPU
Add a VCPU ioctl to get a statistics file descriptor by which a read
functionality is provided for userspace to read out VCPU stats header,
descriptors and data.
Define VCPU statistics descriptors and header for all architectures.
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com> #arm64
Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210618222709.1858088-5-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index e79ce64b9f6f..9e75afef16b0 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -305,7 +305,6 @@ struct kvm_vcpu { struct pid __rcu *pid; int sigset_active; sigset_t sigset; - struct kvm_vcpu_stat stat; unsigned int halt_poll_ns; bool valid_wakeup; @@ -342,6 +341,8 @@ struct kvm_vcpu { bool preempted; bool ready; struct kvm_vcpu_arch arch; + struct kvm_vcpu_stat stat; + char stats_id[KVM_STATS_NAME_SIZE]; struct kvm_dirty_ring dirty_ring; }; @@ -1358,6 +1359,14 @@ struct _kvm_stats_desc { #define KVM_GENERIC_VM_STATS() \ STATS_DESC_COUNTER(VM_GENERIC, remote_tlb_flush) +#define KVM_GENERIC_VCPU_STATS() \ + STATS_DESC_COUNTER(VCPU_GENERIC, halt_successful_poll), \ + STATS_DESC_COUNTER(VCPU_GENERIC, halt_attempted_poll), \ + STATS_DESC_COUNTER(VCPU_GENERIC, halt_poll_invalid), \ + STATS_DESC_COUNTER(VCPU_GENERIC, halt_wakeup), \ + STATS_DESC_TIME_NSEC(VCPU_GENERIC, halt_poll_success_ns), \ + STATS_DESC_TIME_NSEC(VCPU_GENERIC, halt_poll_fail_ns) + extern struct kvm_stats_debugfs_item debugfs_entries[]; extern struct dentry *kvm_debugfs_dir; ssize_t kvm_stats_read(char *id, const struct kvm_stats_header *header, @@ -1366,6 +1375,8 @@ ssize_t kvm_stats_read(char *id, const struct kvm_stats_header *header, char __user *user_buffer, size_t size, loff_t *offset); extern const struct kvm_stats_header kvm_vm_stats_header; extern const struct _kvm_stats_desc kvm_vm_stats_desc[]; +extern const struct kvm_stats_header kvm_vcpu_stats_header; +extern const struct _kvm_stats_desc kvm_vcpu_stats_desc[]; #if defined(CONFIG_MMU_NOTIFIER) && defined(KVM_ARCH_WANT_MMU_NOTIFIER) static inline int mmu_notifier_retry(struct kvm *kvm, unsigned long mmu_seq) |