From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58324) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dIBlK-0006hA-Di for qemu-devel@nongnu.org; Tue, 06 Jun 2017 06:30:59 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dIBlI-00061f-SR for qemu-devel@nongnu.org; Tue, 06 Jun 2017 06:30:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57256) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dIBlI-00061Y-JR for qemu-devel@nongnu.org; Tue, 06 Jun 2017 06:30:56 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id A06B180B56 for ; Tue, 6 Jun 2017 10:30:55 +0000 (UTC) From: Peter Xu Date: Tue, 6 Jun 2017 18:30:37 +0800 Message-Id: <1496745042-2379-2-git-send-email-peterx@redhat.com> In-Reply-To: <1496745042-2379-1-git-send-email-peterx@redhat.com> References: <1496745042-2379-1-git-send-email-peterx@redhat.com> Subject: [Qemu-devel] [PATCH 1/6] migration: let MigrationState be a qdev List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Markus Armbruster , Laurent Vivier , Juan Quintela , "Dr . David Alan Gilbert" , peterx@redhat.com Let the old man "MigrationState" join the object family. Direct benefit is that we can start to use all the property features derived from current QDev, like: HW_COMPAT_* bits, command line setup for migration parameters (so will never need to set them up each time using HMP/QMP, this is really, really attractive for test writters), etc. I see no reason to disallow this happen yet. So let's start from this one, to see whether it would be anything good. No functional change at all. Signed-off-by: Peter Xu --- include/migration/migration.h | 19 +++++++++++++++ migration/migration.c | 57 +++++++++++++++++++++++++++++-------------- 2 files changed, 58 insertions(+), 18 deletions(-) diff --git a/include/migration/migration.h b/include/migration/migration.h index 79b5484..bd0186c 100644 --- a/include/migration/migration.h +++ b/include/migration/migration.h @@ -21,6 +21,7 @@ #include "qapi-types.h" #include "exec/cpu-common.h" #include "qemu/coroutine_int.h" +#include "hw/qdev.h" #define QEMU_VM_FILE_MAGIC 0x5145564d #define QEMU_VM_FILE_VERSION_COMPAT 0x00000002 @@ -49,6 +50,8 @@ enum mig_rp_message_type { MIG_RP_MSG_MAX }; +#define TYPE_MIGRATION "migration" + /* State for the incoming migration */ struct MigrationIncomingState { QEMUFile *from_src_file; @@ -91,8 +94,24 @@ struct MigrationIncomingState { MigrationIncomingState *migration_incoming_get_current(void); void migration_incoming_state_destroy(void); +#define MIGRATION_CLASS(klass) \ + OBJECT_CLASS_CHECK(MigrationClass, (klass), TYPE_MIGRATION) +#define MIGRATION_OBJ(obj) \ + OBJECT_CHECK(MigrationState, (obj), TYPE_MIGRATION) +#define MIGRATION_GET_CLASS(obj) \ + OBJECT_GET_CLASS(MigrationClass, (obj), TYPE_MIGRATION) + +typedef struct MigrationClass { + /*< private >*/ + DeviceClass parent_class; +} MigrationClass; + struct MigrationState { + /*< private >*/ + DeviceState parent_obj; + + /*< public >*/ size_t bytes_xfer; size_t xfer_limit; QemuThread thread; diff --git a/migration/migration.c b/migration/migration.c index 48c94c9..483b027 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -94,28 +94,14 @@ static bool deferred_incoming; MigrationState *migrate_get_current(void) { static bool once; - static MigrationState current_migration = { - .state = MIGRATION_STATUS_NONE, - .xbzrle_cache_size = DEFAULT_MIGRATE_CACHE_SIZE, - .mbps = -1, - .parameters = { - .compress_level = DEFAULT_MIGRATE_COMPRESS_LEVEL, - .compress_threads = DEFAULT_MIGRATE_COMPRESS_THREAD_COUNT, - .decompress_threads = DEFAULT_MIGRATE_DECOMPRESS_THREAD_COUNT, - .cpu_throttle_initial = DEFAULT_MIGRATE_CPU_THROTTLE_INITIAL, - .cpu_throttle_increment = DEFAULT_MIGRATE_CPU_THROTTLE_INCREMENT, - .max_bandwidth = MAX_THROTTLE, - .downtime_limit = DEFAULT_MIGRATE_SET_DOWNTIME, - .x_checkpoint_delay = DEFAULT_MIGRATE_X_CHECKPOINT_DELAY, - }, - }; + static MigrationState *current_migration; if (!once) { - current_migration.parameters.tls_creds = g_strdup(""); - current_migration.parameters.tls_hostname = g_strdup(""); + current_migration = MIGRATION_OBJ(object_new(TYPE_MIGRATION)); once = true; } - return ¤t_migration; + + return current_migration; } MigrationIncomingState *migration_incoming_get_current(void) @@ -2123,3 +2109,38 @@ void migrate_fd_connect(MigrationState *s) s->migration_thread_running = true; } +static void migration_instance_init(Object *obj) +{ + MigrationState *ms = MIGRATION_OBJ(obj); + + ms->state = MIGRATION_STATUS_NONE; + ms->xbzrle_cache_size = DEFAULT_MIGRATE_CACHE_SIZE; + ms->mbps = -1; + ms->parameters = (MigrationParameters) { + .compress_level = DEFAULT_MIGRATE_COMPRESS_LEVEL, + .compress_threads = DEFAULT_MIGRATE_COMPRESS_THREAD_COUNT, + .decompress_threads = DEFAULT_MIGRATE_DECOMPRESS_THREAD_COUNT, + .cpu_throttle_initial = DEFAULT_MIGRATE_CPU_THROTTLE_INITIAL, + .cpu_throttle_increment = DEFAULT_MIGRATE_CPU_THROTTLE_INCREMENT, + .max_bandwidth = MAX_THROTTLE, + .downtime_limit = DEFAULT_MIGRATE_SET_DOWNTIME, + .x_checkpoint_delay = DEFAULT_MIGRATE_X_CHECKPOINT_DELAY, + }; + ms->parameters.tls_creds = g_strdup(""); + ms->parameters.tls_hostname = g_strdup(""); +} + +static const TypeInfo migration_type = { + .name = TYPE_MIGRATION, + .parent = TYPE_DEVICE, + .class_size = sizeof(MigrationClass), + .instance_size = sizeof(MigrationState), + .instance_init = migration_instance_init, +}; + +static void register_migration_types(void) +{ + type_register_static(&migration_type); +} + +type_init(register_migration_types); -- 2.7.4