From patchwork Fri Jun 26 16:27:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe de Dinechin X-Patchwork-Id: 11627969 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6F82E913 for ; Fri, 26 Jun 2020 16:29:34 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 47B3F207D8 for ; Fri, 26 Jun 2020 16:29:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="FRqg5X+4" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 47B3F207D8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:57284 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jorEL-0007Pu-H2 for patchwork-qemu-devel@patchwork.kernel.org; Fri, 26 Jun 2020 12:29:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53870) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jorCH-0003be-1S for qemu-devel@nongnu.org; Fri, 26 Jun 2020 12:27:25 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:48882 helo=us-smtp-delivery-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jorCF-0002zC-4d for qemu-devel@nongnu.org; Fri, 26 Jun 2020 12:27:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1593188841; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AgCuRgUlhTVRwrQ2XijSXDxZ0RfymZaDq42/J3cHIiQ=; b=FRqg5X+4F4CK7O6cR4QB9MtITOwq758b55g7L0romKmXUJ+dYb7v2IIdqmOKUtRNc8+v2z nl4HRzoBpDFjMWM8aHDd9zfZoLMyG0twGxmXWru8tqGvzCYvCjtpHDBFAMCcT4RJt2U//R 780X12dYE0GyCOvhJwk31WZ/UtL4Xic= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-209-pGlCbCvZPKW0vxgcUtD_3w-1; Fri, 26 Jun 2020 12:27:19 -0400 X-MC-Unique: pGlCbCvZPKW0vxgcUtD_3w-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 700A21902EA4; Fri, 26 Jun 2020 16:27:18 +0000 (UTC) Received: from turbo.com (ovpn-112-91.ams2.redhat.com [10.36.112.91]) by smtp.corp.redhat.com (Postfix) with ESMTP id E611471668; Fri, 26 Jun 2020 16:27:16 +0000 (UTC) From: Christophe de Dinechin To: qemu-devel@nongnu.org Subject: [PATCH v2 3/3] trace: Example of "centralized" recorder tracing Date: Fri, 26 Jun 2020 18:27:06 +0200 Message-Id: <20200626162706.3304357-4-dinechin@redhat.com> In-Reply-To: <20200626162706.3304357-1-dinechin@redhat.com> References: <20200626162706.3304357-1-dinechin@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=207.211.31.81; envelope-from=dinechin@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/26 03:23:21 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Markus Armbruster , Michael Tokarev , "Dr. David Alan Gilbert" , Stefan Hajnoczi , Laurent Vivier Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" This is an example showing how the recorder can be used to have one "topic" covering multiple entries. Here, the topic is "lock". Here are a few use cases: - Checking locks: RECORDER_TRACES=lock qemu - Graphic visualization of locks: RECORDER_TRACES="lock=state,id" qemu & recorder_scope state cat recorder_scope_data-1.csv Signed-off-by: Christophe de Dinechin Reviewed-by: Stefan Hajnoczi --- util/qemu-thread-common.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/util/qemu-thread-common.h b/util/qemu-thread-common.h index 2af6b12085..0de07a471f 100644 --- a/util/qemu-thread-common.h +++ b/util/qemu-thread-common.h @@ -15,6 +15,9 @@ #include "qemu/thread.h" #include "trace.h" +#include "trace/recorder.h" + +RECORDER_DEFINE(lock, 16, "Lock state"); static inline void qemu_mutex_post_init(QemuMutex *mutex) { @@ -23,12 +26,14 @@ static inline void qemu_mutex_post_init(QemuMutex *mutex) mutex->line = 0; #endif mutex->initialized = true; + record(lock, "Init state %d for %p", -1, mutex); } static inline void qemu_mutex_pre_lock(QemuMutex *mutex, const char *file, int line) { trace_qemu_mutex_lock(mutex, file, line); + record(lock, "Locking state %d for %p", 1, mutex); } static inline void qemu_mutex_post_lock(QemuMutex *mutex, @@ -39,6 +44,7 @@ static inline void qemu_mutex_post_lock(QemuMutex *mutex, mutex->line = line; #endif trace_qemu_mutex_locked(mutex, file, line); + record(lock, "Locked state %d for %p", 2, mutex); } static inline void qemu_mutex_pre_unlock(QemuMutex *mutex, @@ -49,6 +55,7 @@ static inline void qemu_mutex_pre_unlock(QemuMutex *mutex, mutex->line = 0; #endif trace_qemu_mutex_unlock(mutex, file, line); + record(lock, "Unkocked state %d for %p", 0, mutex); } #endif