From nobody Sun Dec 28 21:03:39 2025 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 7AA81C4167B for ; Tue, 5 Dec 2023 10:39:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376646AbjLEKi7 (ORCPT ); Tue, 5 Dec 2023 05:38:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41982 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235579AbjLEKii (ORCPT ); Tue, 5 Dec 2023 05:38:38 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27CBA1BFD for ; Tue, 5 Dec 2023 02:38:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1701772684; 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=gK4jXLoCS0bqGNjgQzNnw64KFoSSKVngg1q4fCtnDfA=; b=CeimODA5HiwtVBIiWVzRhO3MQHwGkd270ZvqF4fFIYupKC8hNRfa4oF5fn2d12RNF+UQk2 YKQyicJjpenGaWkcJt5JWfTpkP9NeQSORAvOVcQK2RrR8n+00mO1NMxmGfvYBfjuNl3To5 GZ6NiyHikMzXBdgVIqmVNoz9hw0Dqsg= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-68-pUCADUVKOrqcI-bkOCOCOQ-1; Tue, 05 Dec 2023 05:37:58 -0500 X-MC-Unique: pUCADUVKOrqcI-bkOCOCOQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8BA6E85A589; Tue, 5 Dec 2023 10:37:57 +0000 (UTC) Received: from localhost.localdomain (unknown [10.45.225.152]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2217EC15E6A; Tue, 5 Dec 2023 10:37:54 +0000 (UTC) From: Maxim Levitsky To: kvm@vger.kernel.org Cc: Sean Christopherson , Dave Hansen , Ingo Molnar , x86@kernel.org, linux-kernel@vger.kernel.org, Paolo Bonzini , Borislav Petkov , Thomas Gleixner , "H. Peter Anvin" , Maxim Levitsky Subject: [PATCH v4 3/4] KVM: x86: add information about pending requests to kvm_exit tracepoint Date: Tue, 5 Dec 2023 12:37:44 +0200 Message-Id: <20231205103745.506724-4-mlevitsk@redhat.com> In-Reply-To: <20231205103745.506724-1-mlevitsk@redhat.com> References: <20231205103745.506724-1-mlevitsk@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This allows to gather information on how often kvm interrupts vCPUs due to specific requests. Reviewed-by: Paolo Bonzini Signed-off-by: Maxim Levitsky --- arch/x86/kvm/trace.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index 28e8a63368cc021..e275a02a21e5233 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -316,12 +316,14 @@ TRACE_EVENT(name, \ __field( u32, intr_info ) \ __field( u32, error_code ) \ __field( unsigned int, vcpu_id ) \ + __field( u64, requests ) \ ), \ \ TP_fast_assign( \ __entry->guest_rip =3D kvm_rip_read(vcpu); \ __entry->isa =3D isa; \ __entry->vcpu_id =3D vcpu->vcpu_id; \ + __entry->requests =3D READ_ONCE(vcpu->requests); \ static_call(kvm_x86_get_exit_info)(vcpu, \ &__entry->exit_reason, \ &__entry->info1, \ @@ -331,11 +333,13 @@ TRACE_EVENT(name, \ ), \ \ TP_printk("vcpu %u reason %s%s%s rip 0x%lx info1 0x%016llx " \ - "info2 0x%016llx intr_info 0x%08x error_code 0x%08x", \ + "info2 0x%016llx intr_info 0x%08x error_code 0x%08x " \ + "requests 0x%016llx", \ __entry->vcpu_id, \ kvm_print_exit_reason(__entry->exit_reason, __entry->isa), \ __entry->guest_rip, __entry->info1, __entry->info2, \ - __entry->intr_info, __entry->error_code) \ + __entry->intr_info, __entry->error_code, \ + __entry->requests) \ ) =20 /* --=20 2.26.3