From patchwork Mon Sep 14 06:07:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Dovgalyuk X-Patchwork-Id: 1363269 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=ispras.ru 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 ozlabs.org (Postfix) with ESMTPS id 4Bqbd53pgfz9sTR for ; Mon, 14 Sep 2020 16:12:57 +1000 (AEST) Received: from localhost ([::1]:50974 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kHhjT-00066z-GT for incoming@patchwork.ozlabs.org; Mon, 14 Sep 2020 02:12:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36876) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kHhdp-00033U-1t for qemu-devel@nongnu.org; Mon, 14 Sep 2020 02:07:05 -0400 Received: from mail.ispras.ru ([83.149.199.84]:44916) by eggs.gnu.org with esmtps (TLS1.2:DHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kHhdn-0002MY-1C for qemu-devel@nongnu.org; Mon, 14 Sep 2020 02:07:04 -0400 Received: from [127.0.1.1] (unknown [62.118.151.149]) by mail.ispras.ru (Postfix) with ESMTPSA id 1D15C40D3BFF; Mon, 14 Sep 2020 06:07:01 +0000 (UTC) Subject: [PATCH v4 06/15] replay: introduce info hmp/qmp command From: Pavel Dovgalyuk To: qemu-devel@nongnu.org Date: Mon, 14 Sep 2020 09:07:00 +0300 Message-ID: <160006362075.31457.16304630329752865389.stgit@pasha-ThinkPad-X280> In-Reply-To: <160006358590.31457.16757371597343007847.stgit@pasha-ThinkPad-X280> References: <160006358590.31457.16757371597343007847.stgit@pasha-ThinkPad-X280> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Received-SPF: pass client-ip=83.149.199.84; envelope-from=pavel.dovgalyuk@ispras.ru; helo=mail.ispras.ru X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/14 02:06:27 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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: kwolf@redhat.com, wrampazz@redhat.com, pavel.dovgalyuk@ispras.ru, ehabkost@redhat.com, alex.bennee@linaro.org, mtosatti@redhat.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, crosa@redhat.com, pbonzini@redhat.com, philmd@redhat.com, zhiwei_liu@c-sky.com, rth@twiddle.net Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Pavel Dovgalyuk This patch introduces 'info replay' monitor command and corresponding qmp request. These commands request the current record/replay mode, replay log file name, and the instruction count (number of recorded/replayed instructions). The instruction count can be used with the replay_seek/replay_break commands added in the next two patches. Signed-off-by: Pavel Dovgalyuk Acked-by: Dr. David Alan Gilbert Acked-by: Markus Armbruster --- hmp-commands-info.hx | 11 +++++++++++ include/monitor/hmp.h | 1 + qapi/block-core.json | 3 ++- qapi/replay.json | 39 +++++++++++++++++++++++++++++++++++++++ replay/meson.build | 1 + replay/replay-debugging.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 97 insertions(+), 1 deletion(-) create mode 100644 replay/replay-debugging.c diff --git a/hmp-commands-info.hx b/hmp-commands-info.hx index 30209e3903..117ba25f91 100644 --- a/hmp-commands-info.hx +++ b/hmp-commands-info.hx @@ -881,4 +881,15 @@ SRST Show SEV information. ERST + { + .name = "replay", + .args_type = "", + .params = "", + .help = "show record/replay information", + .cmd = hmp_info_replay, + }, +SRST + ``info replay`` + Display the record/replay information: mode and the current icount. +ERST diff --git a/include/monitor/hmp.h b/include/monitor/hmp.h index c986cfd28b..a790589b9e 100644 --- a/include/monitor/hmp.h +++ b/include/monitor/hmp.h @@ -130,5 +130,6 @@ void hmp_hotpluggable_cpus(Monitor *mon, const QDict *qdict); void hmp_info_vm_generation_id(Monitor *mon, const QDict *qdict); void hmp_info_memory_size_summary(Monitor *mon, const QDict *qdict); void hmp_info_sev(Monitor *mon, const QDict *qdict); +void hmp_info_replay(Monitor *mon, const QDict *qdict); #endif diff --git a/qapi/block-core.json b/qapi/block-core.json index e25aff4e4b..26d098ea0b 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -29,7 +29,8 @@ # # @icount: Current instruction count. Appears when execution record/replay # is enabled. Used for "time-traveling" to match the moment -# in the recorded execution with the snapshots. (since 5.2) +# in the recorded execution with the snapshots. This counter may +# be obtained through @query-replay command (since 5.2) # # Since: 1.3 # diff --git a/qapi/replay.json b/qapi/replay.json index 9e13551d20..e6b3f6001d 100644 --- a/qapi/replay.json +++ b/qapi/replay.json @@ -24,3 +24,42 @@ ## { 'enum': 'ReplayMode', 'data': [ 'none', 'record', 'play' ] } + +## +# @ReplayInfo: +# +# Record/replay information. +# +# @mode: current mode. +# +# @filename: name of the record/replay log file. +# It is present only in record or replay modes, when the log +# is recorded or replayed. +# +# @icount: current number of executed instructions. +# +# Since: 5.2 +# +## +{ 'struct': 'ReplayInfo', + 'data': { 'mode': 'ReplayMode', '*filename': 'str', 'icount': 'int' } } + +## +# @query-replay: +# +# Retrieve the record/replay information. +# It includes current instruction count which may be used for +# @replay-break and @replay-seek commands. +# +# Returns: record/replay information. +# +# Since: 5.2 +# +# Example: +# +# -> { "execute": "query-replay" } +# <- { "return": { "mode": "play", "filename": "log.rr", "icount": 220414 } } +# +## +{ 'command': 'query-replay', + 'returns': 'ReplayInfo' } diff --git a/replay/meson.build b/replay/meson.build index 8783aea7c8..f91163fb1e 100644 --- a/replay/meson.build +++ b/replay/meson.build @@ -9,4 +9,5 @@ softmmu_ss.add(files( 'replay-net.c', 'replay-audio.c', 'replay-random.c', + 'replay-debugging.c', )) diff --git a/replay/replay-debugging.c b/replay/replay-debugging.c new file mode 100644 index 0000000000..51a6de4e81 --- /dev/null +++ b/replay/replay-debugging.c @@ -0,0 +1,43 @@ +/* + * replay-debugging.c + * + * Copyright (c) 2010-2020 Institute for System Programming + * of the Russian Academy of Sciences. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qemu/osdep.h" +#include "qapi/error.h" +#include "sysemu/replay.h" +#include "replay-internal.h" +#include "monitor/hmp.h" +#include "monitor/monitor.h" +#include "qapi/qapi-commands-replay.h" + +void hmp_info_replay(Monitor *mon, const QDict *qdict) +{ + if (replay_mode == REPLAY_MODE_NONE) { + monitor_printf(mon, "Record/replay is not active\n"); + } else { + monitor_printf(mon, + "%s execution '%s': instruction count = %"PRId64"\n", + replay_mode == REPLAY_MODE_RECORD ? "Recording" : "Replaying", + replay_get_filename(), replay_get_current_icount()); + } +} + +ReplayInfo *qmp_query_replay(Error **errp) +{ + ReplayInfo *retval = g_new0(ReplayInfo, 1); + + retval->mode = replay_mode; + if (replay_get_filename()) { + retval->filename = g_strdup(replay_get_filename()); + retval->has_filename = true; + } + retval->icount = replay_get_current_icount(); + return retval; +}