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KVM: Add trace points in irqchip code

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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 <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
This commit is contained in:
Gleb Natapov 2009-07-07 16:00:57 +03:00 • committed by Avi Kivity
commit 1000ff8d89
6 changed files with 152 additions and 0 deletions
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2
virt/kvm/ioapic.c
View file

@ -36,6 +36,7 @@
#include <asm/processor.h>
#include <asm/page.h>
#include <asm/current.h>
#include <trace/events/kvm.h>
#include "ioapic.h"
#include "lapic.h"
@ -193,6 +194,7 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level)
(!edge && !entry.fields.remote_irr))
ret = ioapic_service(ioapic, irq);
}
trace_kvm_ioapic_set_irq(entry.bits, irq, ret == 0);
}
return ret;
}

2
virt/kvm/irq_comm.c
View file

@ -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 &