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authorPeter Xu <peterx@redhat.com>2018-01-03 20:20:11 +0800
committerJuan Quintela <quintela@redhat.com>2018-01-15 12:48:09 +0100
commitcf011f082d7a2a9abfc0a257cc4de1cfcfbef24d (patch)
tree9c645267a12c13e3cc1e4ed804324a40415eb479 /migration/migration.c
parent64909f974012038266a4785a33935742f1e96b84 (diff)
migration: introduce migrate_calculate_complete
Generalize the calculation part when migration complete into a function to simplify migration_thread(). Signed-off-by: Peter Xu <peterx@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'migration/migration.c')
-rw-r--r--migration/migration.c31
1 files changed, 20 insertions, 11 deletions
diff --git a/migration/migration.c b/migration/migration.c
index fff2823ad5..c1de46a101 100644
--- a/migration/migration.c
+++ b/migration/migration.c
@@ -2190,6 +2190,25 @@ bool migrate_colo_enabled(void)
return s->enabled_capabilities[MIGRATION_CAPABILITY_X_COLO];
}
+static void migration_calculate_complete(MigrationState *s)
+{
+ uint64_t bytes = qemu_ftell(s->to_dst_file);
+ int64_t end_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
+
+ s->total_time = end_time - s->start_time;
+ if (!s->downtime) {
+ /*
+ * It's still not set, so we are precopy migration. For
+ * postcopy, downtime is calculated during postcopy_start().
+ */
+ s->downtime = end_time - s->downtime_start;
+ }
+
+ if (s->total_time) {
+ s->mbps = ((double) bytes * 8.0) / s->total_time / 1000;
+ }
+}
+
/*
* Master migration thread on the source VM.
* It drives the migration and pumps the data down the outgoing channel.
@@ -2207,7 +2226,6 @@ static void *migration_thread(void *opaque)
* measured bandwidth
*/
int64_t threshold_size = 0;
- int64_t end_time;
bool entered_postcopy = false;
/* The active state we expect to be in; ACTIVE or POSTCOPY_ACTIVE */
enum MigrationStatus current_active_state = MIGRATION_STATUS_ACTIVE;
@@ -2321,19 +2339,10 @@ static void *migration_thread(void *opaque)
trace_migration_thread_after_loop();
/* If we enabled cpu throttling for auto-converge, turn it off. */
cpu_throttle_stop();
- end_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
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->start_time;
- if (!entered_postcopy) {
- s->downtime = end_time - s->downtime_start;
- }
- if (s->total_time) {
- s->mbps = (((double) transferred_bytes * 8.0) /
- ((double) s->total_time)) / 1000;
- }
+ migration_calculate_complete(s);
runstate_set(RUN_STATE_POSTMIGRATE);
} else {
if (s->state == MIGRATION_STATUS_ACTIVE) {