[PART1 RFC v3 08/12] KVM: x86: Add trace events for AVIC

Suravee Suthikulpanit
2016-03-18T06:12:24Z

Introduce trace events for AMD AVIC incomplete IPI vmexit, and
AVIC unaccelerate access vmexit.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
---
arch/x86/kvm/trace.h | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++
arch/x86/kvm/x86.c | 2 ++
2 files changed, 59 insertions(+)

diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index ad9f6a2..3c85a3d 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -1288,6 +1288,63 @@ TRACE_EVENT(kvm_hv_stimer_cleanup,
__entry->vcpu_id, __entry->timer_index)
);

+/*
+ * Tracepoint for AMD AVIC
+ */
+TRACE_EVENT(kvm_avic_incomplete_ipi,
+ TP_PROTO(u32 vcpu, u32 icrh, u32 icrl, u32 id, u32 index),
+ TP_ARGS(vcpu, icrh, icrl, id, index),
+
+ TP_STRUCT__entry(
+ __field(u32, vcpu)
+ __field(u32, icrh)
+ __field(u32, icrl)
+ __field(u32, id)
+ __field(u32, index)
+ ),
+
+ TP_fast_assign(
+ __entry->vcpu = vcpu;
+ __entry->icrh = icrh;
+ __entry->icrl = icrl;
+ __entry->id = id;
+ __entry->index = index;
+ ),
+
+ TP_printk("vcpu=%#x, icrh:icrl=%#010x:%08x, id=%u, index=%u\n",
+ __entry->vcpu, __entry->icrh, __entry->icrl,
+ __entry->id, __entry->index)
+);
+
+TRACE_EVENT(kvm_avic_unaccelerated_access,
+ TP_PROTO(u32 vcpu, u32 offset, bool ft, bool rw, u32 vec),
+ TP_ARGS(vcpu, offset, ft, rw, vec),
+
+ TP_STRUCT__entry(
+ __field(u32, vcpu)
+ __field(u32, offset)
+ __field(bool, ft)
+ __field(bool, rw)
+ __field(u32, vec)
+ ),
+
+ TP_fast_assign(
+ __entry->vcpu = vcpu;
+ __entry->offset = offset;
+ __entry->ft = ft;
+ __entry->rw = rw;
+ __entry->vec = vec;
+ ),
+
+ TP_printk("vcpu=%#x, offset=%#x(%s), %s, %s, vec=%#x\n",
+ __entry->vcpu,
+ __entry->offset,
+ __print_symbolic(__entry->offset, kvm_trace_symbol_apic),
+ __entry->ft ? "trap" : "fault",
+ __entry->rw ? "write" : "read",
+ __entry->vec)
+);
+
#endif /* _TRACE_KVM_H */

#undef TRACE_INCLUDE_PATH
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4d2961d..775de1c 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -8395,3 +8395,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_write_tsc_offset);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_ple_window);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_pml_full);
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_pi_irte_update);
+EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_unaccelerated_access);
+EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_incomplete_ipi);
--
1.9.1