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Migration: Emit event at start of pass

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Emit an event each time we sync the dirty bitmap on the source;
this helps libvirt use postcopy by giving it a kick when it
might be a good idea to start the postcopy.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Message-Id: <1450266458-3178-5-git-send-email-dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2015-12-16 11:47:36 +00:00 • committed by Amit Shah
parent 6ba996bb45
commit 4addcd4fdc
3 changed files with 31 additions and 0 deletions
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4
migration/ram.c
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@ -27,6 +27,7 @@
*/
#include <stdint.h>
#include <zlib.h>
#include "qapi-event.h"
#include "qemu/bitops.h"
#include "qemu/bitmap.h"
#include "qemu/timer.h"
@ -682,6 +683,9 @@ static void migration_bitmap_sync(void)
num_dirty_pages_period = 0;
}
s->dirty_sync_count = bitmap_sync_count;
if (migrate_use_events()) {
qapi_event_send_migration_pass(bitmap_sync_count, NULL);
}
}
/**