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Commit 0c04851c authored by Avi Kivity's avatar Avi Kivity Committed by Marcelo Tosatti
Browse files

KVM: trace guest fpu loads and unloads 



Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 8ae09912

arch/x86/kvm/x86.c

+2 −0
Original line number Diff line number Diff line
@@ -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)

include/trace/events/kvm.h

+19 −0
Original line number Diff line number Diff line
@@ -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 */