int migrate_compress_level(void);
int migrate_compress_threads(void);
int migrate_decompress_threads(void);
+bool migrate_use_events(void);
void ram_control_before_iterate(QEMUFile *f, uint64_t flags);
void ram_control_after_iterate(QEMUFile *f, uint64_t flags);
vmstate_register(NULL, 0, &vmstate_globalstate, &global_state);
}
+static void migrate_generate_event(int new_state)
+{
+ if (migrate_use_events()) {
+ qapi_event_send_migration(new_state, &error_abort);
+ trace_migrate_set_state(new_state);
+ }
+}
+
/*
* Called on -incoming with a defer: uri.
* The migration can be started later after any parameters have been
static void migrate_set_state(MigrationState *s, int old_state, int new_state)
{
if (atomic_cmpxchg(&s->state, old_state, new_state) == old_state) {
- qapi_event_send_migration(new_state, &error_abort);
- trace_migrate_set_state(new_state);
+ migrate_generate_event(new_state);
}
}
return s->parameters[MIGRATION_PARAMETER_DECOMPRESS_THREADS];
}
+bool migrate_use_events(void)
+{
+ MigrationState *s;
+
+ s = migrate_get_current();
+
+ return s->enabled_capabilities[MIGRATION_CAPABILITY_EVENTS];
+}
+
int migrate_use_xbzrle(void)
{
MigrationState *s;
# minimize migration traffic. The feature is disabled by default.
# (since 2.4 )
#
+# @events: generate events for each migration state change
+# (since 2.4 )
+#
# @auto-converge: If enabled, QEMU will automatically throttle down the guest
# to speed up convergence of RAM migration. (since 1.6)
#
##
{ 'enum': 'MigrationCapability',
'data': ['xbzrle', 'rdma-pin-all', 'auto-converge', 'zero-blocks',
- 'compress'] }
+ 'compress', 'events'] }
##
# @MigrationCapabilityStatus