diff options
| author | Jing Zhang <[email protected]> | 2021-06-18 22:27:05 +0000 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2021-06-24 18:00:10 -0400 |
| commit | fcfe1baeddbf1c7c448b44c82586d0cbc8abc9f5 (patch) | |
| tree | 1d7b6b70c649bbfbb2ada937a4dcec2b8558625c /arch/arm64/kvm/guest.c | |
| parent | cb082bfab59a224a49ae803fed52cd03e8d6b5e0 (diff) | |
KVM: stats: Support binary stats retrieval for a VM
Add a VM ioctl to get a statistics file descriptor by which a read
functionality is provided for userspace to read out VM stats header,
descriptors and data.
Define VM statistics descriptors and header for all architectures.
Reviewed-by: David Matlack <[email protected]>
Reviewed-by: Ricardo Koller <[email protected]>
Reviewed-by: Krish Sadhukhan <[email protected]>
Reviewed-by: Fuad Tabba <[email protected]>
Tested-by: Fuad Tabba <[email protected]> #arm64
Signed-off-by: Jing Zhang <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
Diffstat (limited to 'arch/arm64/kvm/guest.c')
| -rw-r--r-- | arch/arm64/kvm/guest.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 988ead309cbe..d7606a3c449b 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -28,6 +28,21 @@ #include "trace.h" +const struct _kvm_stats_desc kvm_vm_stats_desc[] = { + KVM_GENERIC_VM_STATS() +}; +static_assert(ARRAY_SIZE(kvm_vm_stats_desc) == + sizeof(struct kvm_vm_stat) / sizeof(u64)); + +const struct kvm_stats_header kvm_vm_stats_header = { + .name_size = KVM_STATS_NAME_SIZE, + .num_desc = ARRAY_SIZE(kvm_vm_stats_desc), + .id_offset = sizeof(struct kvm_stats_header), + .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE, + .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE + + sizeof(kvm_vm_stats_desc), +}; + struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("halt_successful_poll", generic.halt_successful_poll), VCPU_STAT("halt_attempted_poll", generic.halt_attempted_poll), |