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

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)