From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5C5AC433F5 for ; Thu, 9 Dec 2021 11:55:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237016AbhLIL7H (ORCPT ); Thu, 9 Dec 2021 06:59:07 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:29692 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236968AbhLIL7E (ORCPT ); Thu, 9 Dec 2021 06:59:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1639050930; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9n3ks/qGBJAFiFoz7WLxCqVjdo8+jnGLy2IDwApqml0=; b=HT72wVqxxUitI/Uibd/+Ia/wt/NbL/WQXphsBxl9RrYHZU3+VhACkEGVc1eCHfadbDmds/ EtK4KPawMoueh0mVkx9Df6FlU38cw2EKg4e543uVMKeSpcqndQn4rGspvccLJ1CeFakbKB K7fXaF55VKNinadVViEQlKsE9qJcGU4= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-576-LoSPptpqNrSyYnG0BW9gKw-1; Thu, 09 Dec 2021 06:55:27 -0500 X-MC-Unique: LoSPptpqNrSyYnG0BW9gKw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id BD8C3190B2A3; Thu, 9 Dec 2021 11:55:25 +0000 (UTC) Received: from localhost.localdomain (unknown [10.40.192.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id 57A6860657; Thu, 9 Dec 2021 11:55:18 +0000 (UTC) From: Maxim Levitsky To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)), Wanpeng Li , Dave Hansen , Joerg Roedel , "H. Peter Anvin" , Paolo Bonzini , Vitaly Kuznetsov , Borislav Petkov , x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)), Ingo Molnar , Thomas Gleixner , Jim Mattson , Sean Christopherson , Maxim Levitsky Subject: [PATCH 2/6] KVM: x86: add a tracepoint for APICv/AVIC interrupt delivery Date: Thu, 9 Dec 2021 13:54:36 +0200 Message-Id: <20211209115440.394441-3-mlevitsk@redhat.com> In-Reply-To: <20211209115440.394441-1-mlevitsk@redhat.com> References: <20211209115440.394441-1-mlevitsk@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This allows to see how many interrupts were delivered via the APICv/AVIC from the host. Signed-off-by: Maxim Levitsky --- arch/x86/kvm/lapic.c | 3 +++ arch/x86/kvm/trace.h | 24 ++++++++++++++++++++++++ arch/x86/kvm/x86.c | 1 + 3 files changed, 28 insertions(+) diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 40270d7bc597..c5028e6b0f96 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1100,6 +1100,9 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, kvm_lapic_set_irr(vector, apic); kvm_make_request(KVM_REQ_EVENT, vcpu); kvm_vcpu_kick(vcpu); + } else { + trace_kvm_apicv_accept_irq(vcpu->vcpu_id, delivery_mode, + trig_mode, vector); } break; diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index 953b0fcb21ee..92e6f6702f00 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -1356,6 +1356,30 @@ TRACE_EVENT(kvm_apicv_update_request, __entry->bit) ); +TRACE_EVENT(kvm_apicv_accept_irq, + TP_PROTO(__u32 apicid, __u16 dm, __u16 tm, __u8 vec), + TP_ARGS(apicid, dm, tm, vec), + + TP_STRUCT__entry( + __field( __u32, apicid ) + __field( __u16, dm ) + __field( __u16, tm ) + __field( __u8, vec ) + ), + + TP_fast_assign( + __entry->apicid = apicid; + __entry->dm = dm; + __entry->tm = tm; + __entry->vec = vec; + ), + + TP_printk("apicid %x vec %u (%s|%s)", + __entry->apicid, __entry->vec, + __print_symbolic((__entry->dm >> 8 & 0x7), kvm_deliver_mode), + __entry->tm ? "level" : "edge") +); + /* * Tracepoint for AMD AVIC */ diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 1aaf37e1bd0f..26cb3a4cd0e9 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -12693,6 +12693,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_unaccelerated_access); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_incomplete_ipi); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_avic_ga_log); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_apicv_update_request); +EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_apicv_accept_irq); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_enter); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_exit); EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_vmgexit_msr_protocol_enter); -- 2.26.3