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migration: Add yank feature

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Register yank functions on sockets to shut them down.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <484c6a14cc2506bebedd5a237259b91363ff8f88.1609167865.git.lukasstraub2@web.de>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Lukas Straub 2020-12-28 16:08:52 +01:00 • committed by Markus Armbruster
parent 8ee4480692
commit b5eea99ec2
5 changed files with 57 additions and 0 deletions
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10
migration/multifd.c
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@ -25,6 +25,9 @@
#include "trace.h"
#include "multifd.h"
#include "qemu/yank.h"
#include "io/channel-socket.h"
/* Multiple fd's */
#define MULTIFD_MAGIC 0x11223344U
@ -974,6 +977,13 @@ int multifd_load_cleanup(Error **errp)
for (i = 0; i < migrate_multifd_channels(); i++) {
MultiFDRecvParams *p = &multifd_recv_state->params[i];
if (object_dynamic_cast(OBJECT(p->c), TYPE_QIO_CHANNEL_SOCKET)
&& OBJECT(p->c)->ref == 1) {
yank_unregister_function(MIGRATION_YANK_INSTANCE,
yank_generic_iochannel,
QIO_CHANNEL(p->c));
}
object_unref(OBJECT(p->c));
p->c = NULL;
qemu_mutex_destroy(&p->mutex);