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Commit 18659a9c authored by Andrey Smetanin's avatar Andrey Smetanin Committed by Paolo Bonzini
Browse files

kvm/x86: Hyper-V SynIC tracepoints 



Trace the following Hyper SynIC events:
* set msr
* set sint irq
* ack sint
* sint irq eoi

Signed-off-by: default avatarAndrey Smetanin <asmetanin@virtuozzo.com>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent f3b138c5

arch/x86/kvm/hyperv.c

+5 −5
Original line number Diff line number Diff line
@@ -152,7 +152,7 @@ static void kvm_hv_notify_acked_sint(struct kvm_vcpu *vcpu, u32 sint) 
	struct kvm_vcpu_hv_stimer *stimer;

	int gsi, idx, stimers_pending;



	vcpu_debug(vcpu, "Hyper-V SynIC acked sint %d\n", sint);

	trace_kvm_hv_notify_acked_sint(vcpu->vcpu_id, sint);



	if (synic->msg_page & HV_SYNIC_SIMP_ENABLE)

		synic_clear_sint_msg_pending(synic, sint);
@@ -202,8 +202,8 @@ static int synic_set_msr(struct kvm_vcpu_hv_synic *synic, 
	if (!synic->active)

		return 1;



	vcpu_debug(vcpu, "Hyper-V SynIC set msr 0x%x 0x%llx host %d\n",

		   msr, data, host);

	trace_kvm_hv_synic_set_msr(vcpu->vcpu_id, msr, data, host);



	ret = 0;

	switch (msr) {

	case HV_X64_MSR_SCONTROL:
@@ -312,7 +312,7 @@ int synic_set_irq(struct kvm_vcpu_hv_synic *synic, u32 sint) 
	irq.level = 1;



	ret = kvm_irq_delivery_to_apic(vcpu->kvm, NULL, &irq, NULL);

	vcpu_debug(vcpu, "Hyper-V SynIC set irq ret %d\n", ret);

	trace_kvm_hv_synic_set_irq(vcpu->vcpu_id, sint, irq.vector, ret);

	return ret;

}
@@ -332,7 +332,7 @@ void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector) 
	struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);

	int i;



	vcpu_debug(vcpu, "Hyper-V SynIC send eoi vec %d\n", vector);

	trace_kvm_hv_synic_send_eoi(vcpu->vcpu_id, vector);



	for (i = 0; i < ARRAY_SIZE(synic->sint); i++)

		if (synic_get_sint_vector(synic_read_sint(synic, i)) == vector)

arch/x86/kvm/trace.h

+93 −0
Original line number Diff line number Diff line
@@ -1025,6 +1025,99 @@ TRACE_EVENT(kvm_pi_irte_update, 
		  __entry->pi_desc_addr)

);



/*

 * Tracepoint for kvm_hv_notify_acked_sint.

 */

TRACE_EVENT(kvm_hv_notify_acked_sint,

	TP_PROTO(int vcpu_id, u32 sint),

	TP_ARGS(vcpu_id, sint),



	TP_STRUCT__entry(

		__field(int, vcpu_id)

		__field(u32, sint)

	),



	TP_fast_assign(

		__entry->vcpu_id = vcpu_id;

		__entry->sint = sint;

	),



	TP_printk("vcpu_id %d sint %u", __entry->vcpu_id, __entry->sint)

);



/*

 * Tracepoint for synic_set_irq.

 */

TRACE_EVENT(kvm_hv_synic_set_irq,

	TP_PROTO(int vcpu_id, u32 sint, int vector, int ret),

	TP_ARGS(vcpu_id, sint, vector, ret),



	TP_STRUCT__entry(

		__field(int, vcpu_id)

		__field(u32, sint)

		__field(int, vector)

		__field(int, ret)

	),



	TP_fast_assign(

		__entry->vcpu_id = vcpu_id;

		__entry->sint = sint;

		__entry->vector = vector;

		__entry->ret = ret;

	),



	TP_printk("vcpu_id %d sint %u vector %d ret %d",

		  __entry->vcpu_id, __entry->sint, __entry->vector,

		  __entry->ret)

);



/*

 * Tracepoint for kvm_hv_synic_send_eoi.

 */

TRACE_EVENT(kvm_hv_synic_send_eoi,

	TP_PROTO(int vcpu_id, int vector),

	TP_ARGS(vcpu_id, vector),



	TP_STRUCT__entry(

		__field(int, vcpu_id)

		__field(u32, sint)

		__field(int, vector)

		__field(int, ret)

	),



	TP_fast_assign(

		__entry->vcpu_id = vcpu_id;

		__entry->vector	= vector;

	),



	TP_printk("vcpu_id %d vector %d", __entry->vcpu_id, __entry->vector)

);



/*

 * Tracepoint for synic_set_msr.

 */

TRACE_EVENT(kvm_hv_synic_set_msr,

	TP_PROTO(int vcpu_id, u32 msr, u64 data, bool host),

	TP_ARGS(vcpu_id, msr, data, host),



	TP_STRUCT__entry(

		__field(int, vcpu_id)

		__field(u32, msr)

		__field(u64, data)

		__field(bool, host)

	),



	TP_fast_assign(

		__entry->vcpu_id = vcpu_id;

		__entry->msr = msr;

		__entry->data = data;

		__entry->host = host

	),



	TP_printk("vcpu_id %d msr 0x%x data 0x%llx host %d",

		  __entry->vcpu_id, __entry->msr, __entry->data, __entry->host)

);



#endif /* _TRACE_KVM_H */



#undef TRACE_INCLUDE_PATH