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-rw-r--r--migration/dirtyrate.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/migration/dirtyrate.c b/migration/dirtyrate.c
index a9bdd60034..b8f61cc650 100644
--- a/migration/dirtyrate.c
+++ b/migration/dirtyrate.c
@@ -380,7 +380,6 @@ void *get_dirtyrate_thread(void *arg)
 {
     struct DirtyRateConfig config = *(struct DirtyRateConfig *)arg;
     int ret;
-    int64_t start_time;
     rcu_register_thread();
 
     ret = dirtyrate_set_state(&CalculatingState, DIRTY_RATE_STATUS_UNSTARTED,
@@ -390,9 +389,6 @@ void *get_dirtyrate_thread(void *arg)
         return NULL;
     }
 
-    start_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000;
-    init_dirtyrate_stat(start_time, config);
-
     calculate_dirtyrate(config);
 
     ret = dirtyrate_set_state(&CalculatingState, DIRTY_RATE_STATUS_MEASURING,
@@ -411,6 +407,7 @@ void qmp_calc_dirty_rate(int64_t calc_time, bool has_sample_pages,
     static struct DirtyRateConfig config;
     QemuThread thread;
     int ret;
+    int64_t start_time;
 
     /*
      * If the dirty rate is already being measured, don't attempt to start.
@@ -451,6 +448,10 @@ void qmp_calc_dirty_rate(int64_t calc_time, bool has_sample_pages,
     config.sample_period_seconds = calc_time;
     config.sample_pages_per_gigabytes = sample_pages;
     config.mode = DIRTY_RATE_MEASURE_MODE_PAGE_SAMPLING;
+
+    start_time = qemu_clock_get_ms(QEMU_CLOCK_REALTIME) / 1000;
+    init_dirtyrate_stat(start_time, config);
+
     qemu_thread_create(&thread, "get_dirtyrate", get_dirtyrate_thread,
                        (void *)&config, QEMU_THREAD_DETACHED);
 }