[Qemu-devel] [PATCH v4 2/8] migration: Add counts of updating the dirty bitmap

[arei.gonglei]

From: ChenLiang <address@hidden>

Add counts to log the times of updating the dirty bitmap.

Signed-off-by: ChenLiang <address@hidden>
Signed-off-by: Gonglei <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
 arch_init.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch_init.c b/arch_init.c
index 2ac68c2..200af0e 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -110,6 +110,8 @@ static bool mig_throttle_on;
 static int dirty_rate_high_cnt;
 static void check_guest_throttling(void);
 
+static uint64_t bitmap_sync_count;
+
 /***********************************************************/
 /* ram save/restore */
 
@@ -487,6 +489,8 @@ static void migration_bitmap_sync(void)
     int64_t end_time;
     int64_t bytes_xfer_now;
 
+    bitmap_sync_count++;
+
     if (!bytes_xfer_prev) {
         bytes_xfer_prev = ram_bytes_transferred();
     }
@@ -734,6 +738,7 @@ static int ram_save_setup(QEMUFile *f, void *opaque)
     migration_dirty_pages = ram_pages;
     mig_throttle_on = false;
     dirty_rate_high_cnt = 0;
+    bitmap_sync_count = 0;
 
     if (migrate_use_xbzrle()) {
         qemu_mutex_lock_iothread();
-- 
1.7.12.4