KVM: Add trace points in irqchip code

Add tracepoint in msi/ioapic/pic set_irq() functions,
in IPI sending and in the point where IRQ is placed into
apic's IRR.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
index a9d7fd1f1d6a..001663ff401a 100644
--- a/virt/kvm/irq_comm.c
+++ b/virt/kvm/irq_comm.c
@@ -100,6 +100,8 @@ static int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
 {
         struct kvm_lapic_irq irq;
 
+        trace_kvm_msi_set_irq(e->msi.address_lo, e->msi.data);
+
         irq.dest_id = (e->msi.address_lo &
                         MSI_ADDR_DEST_ID_MASK) >> MSI_ADDR_DEST_ID_SHIFT;
         irq.vector = (e->msi.data &