@@ -3570,8 +3570,8 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
n->primary_listener.hide_device = failover_hide_primary_device;
qatomic_set(&n->failover_primary_hidden, true);
device_listener_register(&n->primary_listener);
- n->migration_state.notify = virtio_net_migration_state_notifier;
- add_migration_state_change_notifier(&n->migration_state);
+ migration_add_notifier(&n->migration_state,
+ virtio_net_migration_state_notifier);
n->host_features |= (1ULL << VIRTIO_NET_F_STANDBY);
}
@@ -3734,7 +3734,7 @@ static void virtio_net_device_unrealize(DeviceState *dev)
if (n->failover) {
qobject_unref(n->primary_opts);
device_listener_unregister(&n->primary_listener);
- remove_migration_state_change_notifier(&n->migration_state);
+ migration_remove_notifier(&n->migration_state);
} else {
assert(n->primary_opts == NULL);
}
@@ -841,8 +841,8 @@ static int vfio_migration_init(VFIODevice *vbasedev,
migration->vm_state = qdev_add_vm_change_state_handler(vbasedev->dev,
vfio_vmstate_change,
vbasedev);
- migration->migration_state.notify = vfio_migration_state_notifier;
- add_migration_state_change_notifier(&migration->migration_state);
+ migration_add_notifier(&migration->migration_state,
+ vfio_migration_state_notifier);
return 0;
err:
@@ -897,7 +897,7 @@ void vfio_migration_finalize(VFIODevice *vbasedev)
if (vbasedev->migration) {
VFIOMigration *migration = vbasedev->migration;
- remove_migration_state_change_notifier(&migration->migration_state);
+ migration_remove_notifier(&migration->migration_state);
qemu_del_vm_change_state_handler(migration->vm_state);
unregister_savevm(VMSTATE_IF(vbasedev->dev), "vfio", vbasedev);
vfio_migration_exit(vbasedev);
@@ -59,8 +59,10 @@ void migration_object_init(void);
void migration_shutdown(void);
bool migration_is_idle(void);
bool migration_is_active(MigrationState *);
-void add_migration_state_change_notifier(Notifier *notify);
-void remove_migration_state_change_notifier(Notifier *notify);
+void migration_add_notifier(Notifier *notify,
+ void (*func)(Notifier *notifier, void *data));
+void migration_remove_notifier(Notifier *notify);
+void migration_call_notifiers(MigrationState *s);
bool migration_in_setup(MigrationState *);
bool migration_has_finished(MigrationState *);
bool migration_has_failed(MigrationState *);
@@ -1980,7 +1980,7 @@ static void migrate_fd_cleanup(MigrationState *s)
/* It is used on info migrate. We can't free it */
error_report_err(error_copy(s->error));
}
- notifier_list_notify(&migration_state_notifiers, s);
+ migration_call_notifiers(s);
block_cleanup_parameters(s);
yank_unregister_instance(MIGRATION_YANK_INSTANCE);
}
@@ -2075,14 +2075,24 @@ static void migrate_fd_cancel(MigrationState *s)
}
}
-void add_migration_state_change_notifier(Notifier *notify)
+void migration_add_notifier(Notifier *notify,
+ void (*func)(Notifier *notifier, void *data))
{
+ notify->notify = func;
notifier_list_add(&migration_state_notifiers, notify);
}
-void remove_migration_state_change_notifier(Notifier *notify)
+void migration_remove_notifier(Notifier *notify)
+{
+ if (notify->notify) {
+ notifier_remove(notify);
+ notify->notify = NULL;
+ }
+}
+
+void migration_call_notifiers(MigrationState *s)
{
- notifier_remove(notify);
+ notifier_list_notify(&migration_state_notifiers, s);
}
bool migration_in_setup(MigrationState *s)
@@ -3257,7 +3267,7 @@ static int postcopy_start(MigrationState *ms)
* spice needs to trigger a transition now
*/
ms->postcopy_after_devices = true;
- notifier_list_notify(&migration_state_notifiers, ms);
+ migration_call_notifiers(ms);
ms->downtime = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) - time_at_stop;
@@ -4282,7 +4292,7 @@ void migrate_fd_connect(MigrationState *s, Error *error_in)
rate_limit = s->parameters.max_bandwidth / XFER_LIMIT_RATIO;
/* Notify before starting migration thread */
- notifier_list_notify(&migration_state_notifiers, s);
+ migration_call_notifiers(s);
}
qemu_file_set_rate_limit(s->to_dst_file, rate_limit);
@@ -814,8 +814,7 @@ static void qemu_spice_init(void)
};
using_spice = 1;
- migration_state.notify = migration_state_notifier;
- add_migration_state_change_notifier(&migration_state);
+ migration_add_notifier(&migration_state, migration_state_notifier);
spice_migrate.base.sif = &migrate_interface.base;
qemu_spice.add_interface(&spice_migrate.base);
Pass the callback function to add_migration_state_change_notifier so that migration can initialize the notifier on add and clear it on delete, which simplifies the call sites. Shorten the function names so the extra arg can be added more legibly. Hide the global notifier list in a new function migration_call_notifiers, and make it externally visible so future cpr code can call it. No functional change. Signed-off-by: Steve Sistare <steven.sistare@oracle.com> --- hw/net/virtio-net.c | 6 +++--- hw/vfio/migration.c | 6 +++--- include/migration/misc.h | 6 ++++-- migration/migration.c | 22 ++++++++++++++++------ ui/spice-core.c | 3 +-- 5 files changed, 27 insertions(+), 16 deletions(-)