From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966429AbdAJLkD (ORCPT ); Tue, 10 Jan 2017 06:40:03 -0500 Received: from foss.arm.com ([217.140.101.70]:49392 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966076AbdAJLkA (ORCPT ); Tue, 10 Jan 2017 06:40:00 -0500 From: Punit Agrawal To: kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Cc: Punit Agrawal , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Christoffer Dall , Marc Zyngier , Steven Rostedt , Paolo Bonzini Subject: [PATCH v3 3/9] KVM: Add event to trace tlb invalidations Date: Tue, 10 Jan 2017 11:38:50 +0000 Message-Id: <20170110113856.7183-4-punit.agrawal@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170110113856.7183-1-punit.agrawal@arm.com> References: <20170110113856.7183-1-punit.agrawal@arm.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.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 | 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