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| author | Avi Kivity <avi@redhat.com> | 2010-01-21 15:31:52 +0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2010-03-01 12:36:05 -0300 |
| commit | 0c04851c0c093ce98ab4ca69556480d779292418 (patch) | |
| tree | 58562c88457cf9dc9650b963aec974fe58ab9351 | |
| parent | 8ae099127668de80e4babba73bb492740ce3a1be (diff) | |
| download | linux-0c04851c0c093ce98ab4ca69556480d779292418.tar.bz2 | |
KVM: trace guest fpu loads and unloads
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 | ||||
| -rw-r--r-- | include/trace/events/kvm.h | 19 |
2 files changed, 21 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 27af6e353b06..3b90298fb980 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5292,6 +5292,7 @@ void kvm_load_guest_fpu(struct kvm_vcpu *vcpu) vcpu->guest_fpu_loaded = 1; kvm_fx_save(&vcpu->arch.host_fx_image); kvm_fx_restore(&vcpu->arch.guest_fx_image); + trace_kvm_fpu(1); } void kvm_put_guest_fpu(struct kvm_vcpu *vcpu) @@ -5304,6 +5305,7 @@ void kvm_put_guest_fpu(struct kvm_vcpu *vcpu) kvm_fx_restore(&vcpu->arch.host_fx_image); ++vcpu->stat.fpu_reload; set_bit(KVM_REQ_DEACTIVATE_FPU, &vcpu->requests); + trace_kvm_fpu(0); } void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h index dbe108455275..8abdc1230143 100644 --- a/include/trace/events/kvm.h +++ b/include/trace/events/kvm.h @@ -145,6 +145,25 @@ TRACE_EVENT(kvm_mmio, __entry->len, __entry->gpa, __entry->val) ); +#define kvm_fpu_load_symbol \ + {0, "unload"}, \ + {1, "load"} + +TRACE_EVENT(kvm_fpu, + TP_PROTO(int load), + TP_ARGS(load), + + TP_STRUCT__entry( + __field( u32, load ) + ), + + TP_fast_assign( + __entry->load = load; + ), + + TP_printk("%s", __print_symbolic(__entry->load, kvm_fpu_load_symbol)) +); + #endif /* _TRACE_KVM_MAIN_H */ /* This part must be outside protection */ |