From mboxrd@z Thu Jan 1 00:00:00 1970 From: punit.agrawal@arm.com (Punit Agrawal) Date: Wed, 26 Oct 2016 18:41:45 +0100 Subject: [PATCH v2 5/8] KVM: Add event to trace tlb invalidations In-Reply-To: <20161026174148.17172-1-punit.agrawal@arm.com> References: <20161026174148.17172-1-punit.agrawal@arm.com> Message-ID: <20161026174148.17172-6-punit.agrawal@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Cc: Steven Rostedt Cc: Paolo Bonzini --- 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