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migration: split use of MigrationState.total_time 

It was used either to:

1. store initial timestamp of migration start, and
2. store total time used by last migration

Let's provide two parameters for each of them.  Mix use of the two is
slightly misleading.

Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Peter Xu 2018-01-03 20:20:08 +08:00 committed by Juan Quintela
parent deb74fb670
commit 4af246a34e
2 changed files with 7 additions and 3 deletions
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7
migration/migration.c
View File

@ -619,7 +619,7 @@ static void fill_source_migration_info(MigrationInfo *info)
info->has_status = true;
info->has_total_time = true;
info->total_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME)
- s->total_time;
- s->start_time;
info->has_expected_downtime = true;
info->expected_downtime = s->expected_downtime;
info->has_setup_time = true;
@ -1300,7 +1300,8 @@ MigrationState *migrate_init(void)
migrate_set_state(&s->state, MIGRATION_STATUS_NONE, MIGRATION_STATUS_SETUP);
s->total_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
s->start_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
s->total_time = 0;
return s;
}
@ -2332,7 +2333,7 @@ static void *migration_thread(void *opaque)
qemu_mutex_lock_iothread();
if (s->state == MIGRATION_STATUS_COMPLETED) {
uint64_t transferred_bytes = qemu_ftell(s->to_dst_file);
s->total_time = end_time - s->total_time;
s->total_time = end_time - s->start_time;
if (!entered_postcopy) {
s->downtime = end_time - start_time;
}

3
migration/migration.h
View File

@ -115,6 +115,9 @@ struct MigrationState
} rp_state;
double mbps;
/* Timestamp when recent migration starts (ms) */
int64_t start_time;
/* Total time used by latest migration (ms) */
int64_t total_time;
int64_t downtime;
int64_t expected_downtime;