From nobody Mon Feb 9 11:33:40 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1554930114; cv=none; d=zoho.com; s=zohoarc; b=b5Y9/G72JSmD3pyL9TzzmNQ9pU4Ng0Y7qGGRmtmAI/9rZDjkvnfZxIdSmrNUUlAQcJX1we9hXau/f6vtQQWugzu5uMG/fWXM1ozanzqK4TN/09WpFBfGJ5Vwxe2taJ1qLuDeoY9zRSvE7qGzN+8Vn6twfMoSWU7Zk0+GSibeGJg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1554930114; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=2W/MwsVxGXZJFuOLklsXbm/Mu6L55Pc0K7W9gWtIrjE=; b=gFjmjuKFE14LviMI2QhRb0OC/KDiS/9V3i0IFC2NGUWxfnVy6Ze6B4b3/pNgeR44lSiKP/4/uYzf7E0ah/TKZzscAYjKmuGbflJ1qvFOEvTIP8jpxAbieQnEslhQYFv1kKwsDcOZNeHssLa/VB7voel5FNxBPAYqwlSuB0T1+Wo= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1554930114767279.0385626783358; Wed, 10 Apr 2019 14:01:54 -0700 (PDT) Received: from localhost ([127.0.0.1]:37859 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hEKLw-0003jN-Ep for importer@patchew.org; Wed, 10 Apr 2019 17:01:52 -0400 Received: from eggs.gnu.org ([209.51.188.92]:42697) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hEKHk-0000hS-Dk for qemu-devel@nongnu.org; Wed, 10 Apr 2019 16:57:33 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hEKHj-0008Ap-Hh for qemu-devel@nongnu.org; Wed, 10 Apr 2019 16:57:32 -0400 Received: from mx1.redhat.com ([209.132.183.28]:3752) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hEKHh-00089T-7p; Wed, 10 Apr 2019 16:57:29 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 6D3C33005FC9; Wed, 10 Apr 2019 20:57:28 +0000 (UTC) Received: from localhost (unknown [10.40.205.69]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F25CA61995; Wed, 10 Apr 2019 20:57:27 +0000 (UTC) From: Max Reitz To: qemu-block@nongnu.org Date: Wed, 10 Apr 2019 22:57:13 +0200 Message-Id: <20190410205715.2209-5-mreitz@redhat.com> In-Reply-To: <20190410205715.2209-1-mreitz@redhat.com> References: <20190410205715.2209-1-mreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Wed, 10 Apr 2019 20:57:28 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 4/6] blkdebug: Add "none" event X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Vladimir Sementsov-Ogievskiy , qemu-devel@nongnu.org, Max Reitz , "Denis V . Lunev" , Andrey Shinkevich Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" Together with @iotypes and @sector, this can be used to trap e.g. the first read or write access to a certain sector without having to know what happens internally in the block layer, i.e. which "real" events happen right before such an access. Signed-off-by: Max Reitz --- qapi/block-core.json | 4 +++- block/blkdebug.c | 2 ++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/qapi/block-core.json b/qapi/block-core.json index 5141e91172..717b13f7f5 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -3215,6 +3215,8 @@ # # @cor_write: a write due to copy-on-read (since 2.11) # +# @none: triggers once at creation of the blkdebug node (since 4.1) +# # Since: 2.9 ## { 'enum': 'BlkdebugEvent', 'prefix': 'BLKDBG', @@ -3233,7 +3235,7 @@ 'pwritev_rmw_tail', 'pwritev_rmw_after_tail', 'pwritev', 'pwritev_zero', 'pwritev_done', 'empty_image_prepare', 'l1_shrink_write_table', 'l1_shrink_free_l2_clusters', - 'cor_write'] } + 'cor_write', 'none' ] } =20 ## # @BlkdebugIOType: diff --git a/block/blkdebug.c b/block/blkdebug.c index ca84b12e32..69c608be6f 100644 --- a/block/blkdebug.c +++ b/block/blkdebug.c @@ -491,6 +491,8 @@ static int blkdebug_open(BlockDriverState *bs, QDict *o= ptions, int flags, goto out; } =20 + bdrv_debug_event(bs, BLKDBG_NONE); + ret =3D 0; out: if (ret < 0) { --=20 2.20.1