[PATCH v3 3/9] KVM: Add event to trace tlb invalidations
From: Punit Agrawal <hidden>
Date: 2017-01-10 11:40:03
Also in:
kvm, kvmarm, lkml
Subsystem:
kernel virtual machine (kvm), the rest, tracing · Maintainers:
Paolo Bonzini, Linus Torvalds, Steven Rostedt, Masami Hiramatsu
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 <redacted> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Paolo Bonzini <pbonzini@redhat.com> --- include/trace/events/kvm.h | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index 8ade3eb6c640..fbe33089264c 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h@@ -393,6 +393,24 @@ 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 */
--
2.11.0