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| author | Avi Kivity <avi@qumranet.com> | 2007-11-18 13:54:33 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-01-30 17:53:04 +0200 |
| commit | f096ed8588b53bf802b84862c6c4d00d25d1ed72 (patch) | |
| tree | 5050a7f7c00b47897c2f4e28c338673bc2dc8fa7 /drivers/kvm/x86.c | |
| parent | e1beb1d37c3187aa12c6463bd15ba594e9986761 (diff) | |
| download | lwn-f096ed8588b53bf802b84862c6c4d00d25d1ed72.tar.gz lwn-f096ed8588b53bf802b84862c6c4d00d25d1ed72.zip | |
KVM: Add fpu_reload counter
Measure the number of times we switch the fpu state.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/x86.c')
| -rw-r--r-- | drivers/kvm/x86.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/kvm/x86.c b/drivers/kvm/x86.c index 923dfd4e0afd..c1211e125b43 100644 --- a/drivers/kvm/x86.c +++ b/drivers/kvm/x86.c @@ -62,6 +62,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "irq_exits", STAT_OFFSET(irq_exits) }, { "host_state_reload", STAT_OFFSET(host_state_reload) }, { "efer_reload", STAT_OFFSET(efer_reload) }, + { "fpu_reload", STAT_OFFSET(fpu_reload) }, { NULL } }; @@ -2417,6 +2418,7 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu) vcpu->guest_fpu_loaded = 0; fx_save(&vcpu->guest_fx_image); fx_restore(&vcpu->host_fx_image); + ++vcpu->stat.fpu_reload; } EXPORT_SYMBOL_GPL(kvm_put_guest_fpu); |