diff options
| author | Peter Xu <peterx@redhat.com> | 2018-01-03 20:20:10 +0800 |
|---|---|---|
| committer | Juan Quintela <quintela@redhat.com> | 2018-01-15 12:48:09 +0100 |
| commit | 64909f974012038266a4785a33935742f1e96b84 (patch) | |
| tree | 969ef901c9847cf0f86af94a5872aedf6fa4df9c | |
| parent | 7287cbd46e2d6fb582ca78c3cb49b1e53d91a761 (diff) | |
migration: introduce downtime_start
Introduce MigrationState.downtime_start to replace the local variable
"start_time" in migration_thread to avoid passing things around.
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
| -rw-r--r-- | migration/migration.c | 12 | ||||
| -rw-r--r-- | migration/migration.h | 2 |
2 files changed, 6 insertions, 8 deletions
diff --git a/migration/migration.c b/migration/migration.c index e26f80d9aa..fff2823ad5 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -2094,16 +2094,14 @@ static int migration_maybe_pause(MigrationState *s, * * @s: Current migration state * @current_active_state: The migration state we expect to be in - * @*start_time: Pointer to time to update */ -static void migration_completion(MigrationState *s, int current_active_state, - int64_t *start_time) +static void migration_completion(MigrationState *s, int current_active_state) { int ret; if (s->state == MIGRATION_STATUS_ACTIVE) { qemu_mutex_lock_iothread(); - *start_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); + s->downtime_start = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER); s->vm_was_running = runstate_is_running(); ret = global_state_store(); @@ -2209,7 +2207,6 @@ static void *migration_thread(void *opaque) * measured bandwidth */ int64_t threshold_size = 0; - int64_t start_time = initial_time; int64_t end_time; bool entered_postcopy = false; /* The active state we expect to be in; ACTIVE or POSTCOPY_ACTIVE */ @@ -2280,8 +2277,7 @@ static void *migration_thread(void *opaque) qemu_savevm_state_iterate(s->to_dst_file, entered_postcopy); } else { trace_migration_thread_low_pending(pending_size); - migration_completion(s, current_active_state, - &start_time); + migration_completion(s, current_active_state); break; } } @@ -2332,7 +2328,7 @@ static void *migration_thread(void *opaque) 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 - start_time; + s->downtime = end_time - s->downtime_start; } if (s->total_time) { s->mbps = (((double) transferred_bytes * 8.0) / diff --git a/migration/migration.h b/migration/migration.h index 4cae263992..0aad12f9a1 100644 --- a/migration/migration.h +++ b/migration/migration.h @@ -119,6 +119,8 @@ struct MigrationState int64_t start_time; /* Total time used by latest migration (ms) */ int64_t total_time; + /* Timestamp when VM is down (ms) to migrate the last stuff */ + int64_t downtime_start; int64_t downtime; int64_t expected_downtime; bool enabled_capabilities[MIGRATION_CAPABILITY__MAX]; |