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KVM/VMX: Add host irq information in trace event when updating IRTE for posted interrupts

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Add host irq information in trace event, so we can better understand
which irq is in posted mode.

Signed-off-by: Feng Wu <feng.wu@intel.com>
Reviewed-by: Radim Krcmar <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Feng Wu 2016-01-25 16:53:35 +08:00 committed by Paolo Bonzini
parent 6228a0da80
commit b6ce978067
2 changed files with 9 additions and 5 deletions
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12
arch/x86/kvm/trace.h
View File

@ -996,11 +996,13 @@ TRACE_EVENT(kvm_enter_smm,
* Tracepoint for VT-d posted-interrupts.
*/
TRACE_EVENT(kvm_pi_irte_update,
TP_PROTO(unsigned int vcpu_id, unsigned int gsi,
unsigned int gvec, u64 pi_desc_addr, bool set),
TP_ARGS(vcpu_id, gsi, gvec, pi_desc_addr, set),
TP_PROTO(unsigned int host_irq, unsigned int vcpu_id,
unsigned int gsi, unsigned int gvec,
u64 pi_desc_addr, bool set),
TP_ARGS(host_irq, vcpu_id, gsi, gvec, pi_desc_addr, set),
TP_STRUCT__entry(
__field( unsigned int, host_irq )
__field( unsigned int, vcpu_id )
__field( unsigned int, gsi )
__field( unsigned int, gvec )
@ -1009,6 +1011,7 @@ TRACE_EVENT(kvm_pi_irte_update,
),
TP_fast_assign(
__entry->host_irq = host_irq;
__entry->vcpu_id = vcpu_id;
__entry->gsi = gsi;
__entry->gvec = gvec;
@ -1016,9 +1019,10 @@ TRACE_EVENT(kvm_pi_irte_update,
__entry->set = set;
),
TP_printk("VT-d PI is %s for this irq, vcpu %u, gsi: 0x%x, "
TP_printk("VT-d PI is %s for irq %u, vcpu %u, gsi: 0x%x, "
"gvec: 0x%x, pi_desc_addr: 0x%llx",
__entry->set ? "enabled and being updated" : "disabled",
__entry->host_irq,
__entry->vcpu_id,
__entry->gsi,
__entry->gvec,

2
arch/x86/kvm/vmx.c
View File

@ -10783,7 +10783,7 @@ static int vmx_update_pi_irte(struct kvm *kvm, unsigned int host_irq,
vcpu_info.pi_desc_addr = __pa(vcpu_to_pi_desc(vcpu));
vcpu_info.vector = irq.vector;
trace_kvm_pi_irte_update(vcpu->vcpu_id, e->gsi,
trace_kvm_pi_irte_update(vcpu->vcpu_id, host_irq, e->gsi,
vcpu_info.vector, vcpu_info.pi_desc_addr, set);
if (set)