As TLB operations can have an impact on system performance, add a trace
event to enable monitoring of guest TLB maintenance operations.
Signed-off-by: Punit Agrawal <punit.agra...@arm.com>
Cc: Steven Rostedt <rost...@goodmis.org>
Cc: Paolo Bonzini <pbonz...@redhat.com>
---
include/trace/events/kvm.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index 8ade3eb..4b3d07e 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h
@@ -393,6 +393,23 @@ TRACE_EVENT(kvm_halt_poll_ns,
#define trace_kvm_halt_poll_ns_shrink(vcpu_id, new, old) \
trace_kvm_halt_poll_ns(false, vcpu_id, new, old)
+TRACE_EVENT(kvm_tlb_invalidate,
+ TP_PROTO(unsigned long vcpu_pc, u32 opcode),
+ TP_ARGS(vcpu_pc, opcode),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, vcpu_pc)
+ __field(u32, opcode)
+ ),
+
+ TP_fast_assign(
+ __entry->vcpu_pc = vcpu_pc;
+ __entry->opcode = opcode;
+ ),
+
+ TP_printk("vcpu_pc=0x%16lx opcode=%08x", __entry->vcpu_pc,
__entry->opcode)
+);
+
#endif /* _TRACE_KVM_MAIN_H */
/* This part must be outside protection */
--
2.9.3
