Patchwork [12/41] ram: introduce migration_bitmap_sync()

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Submitter Juan Quintela
Date Sept. 21, 2012, 8:47 a.m.
Message ID <1348217255-22441-13-git-send-email-quintela@redhat.com>
Download mbox | patch
Permalink /patch/185670/
State New
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Comments

Juan Quintela - Sept. 21, 2012, 8:47 a.m.
Helper that we use each time that we need to syncronize the migration
bitmap with the other dirty bitmaps.

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 arch_init.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

Patch

diff --git a/arch_init.c b/arch_init.c
index acc057f..a58e8c3 100644
--- a/arch_init.c
+++ b/arch_init.c
@@ -357,6 +357,12 @@  static inline void migration_bitmap_set_dirty(MemoryRegion *mr, int length)
     }
 }

+static void migration_bitmap_sync(void)
+{
+    memory_global_sync_dirty_bitmap(get_system_memory());
+}
+
+
 /*
  * ram_save_block: Writes a page of memory to the stream f
  *
@@ -614,7 +620,7 @@  static int ram_save_iterate(QEMUFile *f, void *opaque)
             expected_downtime, migrate_max_downtime());

     if (expected_downtime <= migrate_max_downtime()) {
-        memory_global_sync_dirty_bitmap(get_system_memory());
+        migration_bitmap_sync();
         expected_downtime = ram_save_remaining() * TARGET_PAGE_SIZE / bwidth;
         s->expected_downtime = expected_downtime / 1000000; /* ns -> ms */

@@ -625,7 +631,7 @@  static int ram_save_iterate(QEMUFile *f, void *opaque)

 static int ram_save_complete(QEMUFile *f, void *opaque)
 {
-    memory_global_sync_dirty_bitmap(get_system_memory());
+    migration_bitmap_sync();

     /* try transferring iterative blocks of memory */