mirror of https://github.com/xemu-project/xemu.git
migration: per-mode notifiers
Keep a separate list of migration notifiers for each migration mode. Suggested-by: Peter Xu <peterx@redhat.com> Signed-off-by: Steve Sistare <steven.sistare@oracle.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/1708622920-68779-8-git-send-email-steven.sistare@oracle.com Signed-off-by: Peter Xu <peterx@redhat.com>
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@ -86,6 +86,12 @@ typedef int (*MigrationNotifyFunc)(NotifierWithReturn *notify,
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void migration_add_notifier(NotifierWithReturn *notify,
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MigrationNotifyFunc func);
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/*
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* Same as migration_add_notifier, but applies to be specified @mode.
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*/
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void migration_add_notifier_mode(NotifierWithReturn *notify,
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MigrationNotifyFunc func, MigMode mode);
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void migration_remove_notifier(NotifierWithReturn *notify);
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void migration_call_notifiers(MigrationState *s, MigrationEventType type);
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bool migration_in_setup(MigrationState *);
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@ -69,8 +69,13 @@
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#include "qemu/sockets.h"
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#include "sysemu/kvm.h"
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static NotifierWithReturnList migration_state_notifiers =
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NOTIFIER_WITH_RETURN_LIST_INITIALIZER(migration_state_notifiers);
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#define NOTIFIER_ELEM_INIT(array, elem) \
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[elem] = NOTIFIER_WITH_RETURN_LIST_INITIALIZER((array)[elem])
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static NotifierWithReturnList migration_state_notifiers[] = {
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NOTIFIER_ELEM_INIT(migration_state_notifiers, MIG_MODE_NORMAL),
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NOTIFIER_ELEM_INIT(migration_state_notifiers, MIG_MODE_CPR_REBOOT),
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};
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/* Messages sent on the return path from destination to source */
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enum mig_rp_message_type {
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@ -1463,11 +1468,17 @@ static void migrate_fd_cancel(MigrationState *s)
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}
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}
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void migration_add_notifier_mode(NotifierWithReturn *notify,
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MigrationNotifyFunc func, MigMode mode)
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{
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notify->notify = (NotifierWithReturnFunc)func;
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notifier_with_return_list_add(&migration_state_notifiers[mode], notify);
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}
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void migration_add_notifier(NotifierWithReturn *notify,
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MigrationNotifyFunc func)
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{
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notify->notify = (NotifierWithReturnFunc)func;
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notifier_with_return_list_add(&migration_state_notifiers, notify);
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migration_add_notifier_mode(notify, func, MIG_MODE_NORMAL);
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}
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void migration_remove_notifier(NotifierWithReturn *notify)
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@ -1480,10 +1491,11 @@ void migration_remove_notifier(NotifierWithReturn *notify)
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void migration_call_notifiers(MigrationState *s, MigrationEventType type)
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{
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MigMode mode = s->parameters.mode;
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MigrationEvent e;
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e.type = type;
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notifier_with_return_list_notify(&migration_state_notifiers, &e, 0);
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notifier_with_return_list_notify(&migration_state_notifiers[mode], &e, 0);
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}
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bool migration_in_setup(MigrationState *s)
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