From patchwork Wed Sep 9 15:11:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 274122 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 358B9C43461 for ; Wed, 9 Sep 2020 15:20:28 +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 A310422286 for ; Wed, 9 Sep 2020 15:20:27 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Wed, 9 Sep 2020 15:12:05 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-113-221.ams2.redhat.com [10.36.113.221]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2F15C60C07; Wed, 9 Sep 2020 15:12:04 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH v7 04/13] hmp: Update current monitor only in handle_hmp_command() Date: Wed, 9 Sep 2020 17:11:40 +0200 Message-Id: <20200909151149.490589-5-kwolf@redhat.com> In-Reply-To: <20200909151149.490589-1-kwolf@redhat.com> References: <20200909151149.490589-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/09 03:25:02 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, 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, qemu-devel@nongnu.org, armbru@redhat.com, marcandre.lureau@gmail.com, stefanha@redhat.com, dgilbert@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The current monitor is updated relatively early in the command handling code even though only the command handler actually needs it. The current monitor will become coroutine-local later, so we can only update it when we know in which coroutine the command will be exectued. Move it to handle_hmp_command() where this information will be available. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake --- monitor/hmp.c | 10 +++++----- monitor/misc.c | 5 ----- 2 files changed, 5 insertions(+), 10 deletions(-) diff --git a/monitor/hmp.c b/monitor/hmp.c index 561e32d02f..896c670183 100644 --- a/monitor/hmp.c +++ b/monitor/hmp.c @@ -1061,6 +1061,7 @@ void handle_hmp_command(MonitorHMP *mon, const char *cmdline) QDict *qdict; const HMPCommand *cmd; const char *cmd_start = cmdline; + Monitor *old_mon; trace_handle_hmp_command(mon, cmdline); @@ -1079,7 +1080,11 @@ void handle_hmp_command(MonitorHMP *mon, const char *cmdline) return; } + /* old_mon is non-NULL when called from qmp_human_monitor_command() */ + old_mon = monitor_set_cur(&mon->common); cmd->cmd(&mon->common, qdict); + monitor_set_cur(old_mon); + qobject_unref(qdict); } @@ -1301,11 +1306,8 @@ cleanup: static void monitor_read(void *opaque, const uint8_t *buf, int size) { MonitorHMP *mon = container_of(opaque, MonitorHMP, common); - Monitor *old_mon; int i; - old_mon = monitor_set_cur(&mon->common); - if (mon->rs) { for (i = 0; i < size; i++) { readline_handle_byte(mon->rs, buf[i]); @@ -1317,8 +1319,6 @@ static void monitor_read(void *opaque, const uint8_t *buf, int size) handle_hmp_command(mon, (char *)buf); } } - - monitor_set_cur(old_mon); } static void monitor_event(void *opaque, QEMUChrEvent event) diff --git a/monitor/misc.c b/monitor/misc.c index a5eb3025f8..ba1063024c 100644 --- a/monitor/misc.c +++ b/monitor/misc.c @@ -120,17 +120,13 @@ char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index, int64_t cpu_index, Error **errp) { char *output = NULL; - Monitor *old_mon; MonitorHMP hmp = {}; monitor_data_init(&hmp.common, false, true, false); - old_mon = monitor_set_cur(&hmp.common); - if (has_cpu_index) { int ret = monitor_set_cpu(&hmp.common, cpu_index); if (ret < 0) { - monitor_set_cur(old_mon); error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index", "a CPU number"); goto out; @@ -138,7 +134,6 @@ char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index, } handle_hmp_command(&hmp, command_line); - monitor_set_cur(old_mon); qemu_mutex_lock(&hmp.common.mon_lock); if (qstring_get_length(hmp.common.outbuf) > 0) {