From patchwork Tue Feb 16 07:51:01 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 583230 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 05B6A14031E for ; Tue, 16 Feb 2016 18:56:26 +1100 (AEDT) Received: from localhost ([::1]:42687 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aVaUi-000875-6R for incoming@patchwork.ozlabs.org; Tue, 16 Feb 2016 02:56:24 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46544) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aVaQg-00013c-HV for qemu-devel@nongnu.org; Tue, 16 Feb 2016 02:52:15 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aVaQf-0001Bb-J7 for qemu-devel@nongnu.org; Tue, 16 Feb 2016 02:52:14 -0500 Received: from mx1.redhat.com ([209.132.183.28]:49371) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aVaQf-0001BO-Bn for qemu-devel@nongnu.org; Tue, 16 Feb 2016 02:52:13 -0500 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) by mx1.redhat.com (Postfix) with ESMTPS id F393C804E7 for ; Tue, 16 Feb 2016 07:52:12 +0000 (UTC) Received: from pxdev.xzpeter.org.com (vpn1-7-188.pek2.redhat.com [10.72.7.188]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u1G7p8qv021685; Tue, 16 Feb 2016 02:52:08 -0500 From: Peter Xu To: qemu-devel@nongnu.org Date: Tue, 16 Feb 2016 15:51:01 +0800 Message-Id: <1455609061-16279-12-git-send-email-peterx@redhat.com> In-Reply-To: <1455609061-16279-1-git-send-email-peterx@redhat.com> References: <1455609061-16279-1-git-send-email-peterx@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: drjones@redhat.com, famz@redhat.com, armbru@redhat.com, peterx@redhat.com, lcapitulino@redhat.com, pbonzini@redhat.com, lersek@redhat.com Subject: [Qemu-devel] [PATCH v7 11/11] dump-guest-memory: add qmp event DUMP_COMPLETED X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org One new QMP event DUMP_COMPLETED is added. When a dump finishes, one DUMP_COMPLETED event will occur to notify the user. Signed-off-by: Peter Xu Reviewed-by: Fam Zheng --- docs/qmp-events.txt | 18 ++++++++++++++++++ dump.c | 18 ++++++++++++------ qapi/event.json | 16 ++++++++++++++++ 3 files changed, 46 insertions(+), 6 deletions(-) diff --git a/docs/qmp-events.txt b/docs/qmp-events.txt index 52eb7e2..4e3eb9e 100644 --- a/docs/qmp-events.txt +++ b/docs/qmp-events.txt @@ -220,6 +220,24 @@ Data: }, "timestamp": { "seconds": 1265044230, "microseconds": 450486 } } +DUMP_COMPLETED +-------------- + +Emitted when the guest has finished one memory dump. + +Data: + +- "result": DumpQueryResult type described in qapi-schema.json +- "error": Error message when dump failed. This is only a + human-readable string provided when dump failed. It should not be + parsed in any way (json-string, optional) + +Example: + +{ "event": "DUMP_COMPLETED", + "data": {"result": {"total": 1090650112, "status": "completed", + "completed": 1090650112} } } + GUEST_PANICKED -------------- diff --git a/dump.c b/dump.c index c697259..a5c40e6 100644 --- a/dump.c +++ b/dump.c @@ -25,6 +25,7 @@ #include "sysemu/cpus.h" #include "qapi/qmp/qerror.h" #include "qmp-commands.h" +#include "qapi-event.h" #include #ifdef CONFIG_LZO @@ -1662,6 +1663,7 @@ cleanup: static void dump_process(DumpState *s, Error **errp) { Error *local_err = NULL; + DumpQueryResult *result = NULL; if (s->has_format && s->format != DUMP_GUEST_MEMORY_FORMAT_ELF) { create_kdump_vmcore(s, &local_err); @@ -1674,6 +1676,15 @@ static void dump_process(DumpState *s, Error **errp) atomic_set(&s->status, (local_err ? DUMP_STATUS_FAILED : DUMP_STATUS_COMPLETED)); + /* send DUMP_COMPLETED message (unconditionally) */ + result = qmp_query_dump(NULL); + /* should never fail */ + assert(result); + qapi_event_send_dump_completed(result, !!local_err, (local_err ? \ + error_get_pretty(local_err) : NULL), + &error_abort); + qapi_free_DumpQueryResult(result); + error_propagate(errp, local_err); dump_cleanup(s); } @@ -1682,13 +1693,8 @@ static void *dump_thread(void *data) { Error *err = NULL; DumpState *s = (DumpState *)data; - dump_process(s, &err); - - if (err) { - /* TODO: notify user the error */ - error_free(err); - } + error_free(err); return NULL; } diff --git a/qapi/event.json b/qapi/event.json index 390fd45..1a45a6c 100644 --- a/qapi/event.json +++ b/qapi/event.json @@ -369,3 +369,19 @@ ## { 'event': 'MEM_UNPLUG_ERROR', 'data': { 'device': 'str', 'msg': 'str' } } + +## +# @DUMP_COMPLETED +# +# Emitted when background dump has completed +# +# @result: DumpQueryResult type described in qapi-schema.json. +# +# @error: #optional human-readable error string that provides +# hint on why dump failed. Only presents on failure. The +# user should not try to interpret the error string. +# +# Since: 2.6 +## +{ 'event': 'DUMP_COMPLETED' , + 'data': { 'result': 'DumpQueryResult', '*error': 'str' } }