[PATCH RFC 1/4] migration: Export migration_bitmap_sync_precopy()

[Peter Xu <peterx@redhat.com>]

Make it usable outside migration.  To make it easier to use, remove the
RAMState parameter since after all ram.c has the reference of ram_state
directly from its context.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 include/migration/misc.h |  1 +
 migration/ram.c          | 10 +++++-----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/include/migration/misc.h b/include/migration/misc.h
index d2762257aa..e338be8c30 100644
--- a/include/migration/misc.h
+++ b/include/migration/misc.h
@@ -66,6 +66,7 @@ void remove_migration_state_change_notifier(Notifier *notify);
 bool migration_in_setup(MigrationState *);
 bool migration_has_finished(MigrationState *);
 bool migration_has_failed(MigrationState *);
+void migration_bitmap_sync_precopy(void);
 /* ...and after the device transmission */
 bool migration_in_postcopy_after_devices(MigrationState *);
 void migration_global_dump(Monitor *mon);
diff --git a/migration/ram.c b/migration/ram.c
index 04f13feb2e..d737175d4e 100644
--- a/migration/ram.c
+++ b/migration/ram.c
@@ -970,7 +970,7 @@ static void migration_bitmap_sync(RAMState *rs)
     }
 }
 
-static void migration_bitmap_sync_precopy(RAMState *rs)
+void migration_bitmap_sync_precopy(void)
 {
     Error *local_err = NULL;
 
@@ -983,7 +983,7 @@ static void migration_bitmap_sync_precopy(RAMState *rs)
         local_err = NULL;
     }
 
-    migration_bitmap_sync(rs);
+    migration_bitmap_sync(ram_state);
 
     if (precopy_notify(PRECOPY_NOTIFY_AFTER_BITMAP_SYNC, &local_err)) {
         error_report_err(local_err);
@@ -2303,7 +2303,7 @@ static void ram_init_bitmaps(RAMState *rs)
     WITH_RCU_READ_LOCK_GUARD() {
         ram_list_init_bitmaps();
         memory_global_dirty_log_start();
-        migration_bitmap_sync_precopy(rs);
+        migration_bitmap_sync_precopy();
     }
     qemu_mutex_unlock_ramlist();
     qemu_mutex_unlock_iothread();
@@ -2592,7 +2592,7 @@ static int ram_save_complete(QEMUFile *f, void *opaque)
 
     WITH_RCU_READ_LOCK_GUARD() {
         if (!migration_in_postcopy()) {
-            migration_bitmap_sync_precopy(rs);
+            migration_bitmap_sync_precopy();
         }
 
         ram_control_before_iterate(f, RAM_CONTROL_FINISH);
@@ -2642,7 +2642,7 @@ static void ram_save_pending(QEMUFile *f, void *opaque, uint64_t max_size,
         remaining_size < max_size) {
         qemu_mutex_lock_iothread();
         WITH_RCU_READ_LOCK_GUARD() {
-            migration_bitmap_sync_precopy(rs);
+            migration_bitmap_sync_precopy();
         }
         qemu_mutex_unlock_iothread();
         remaining_size = rs->migration_dirty_pages * TARGET_PAGE_SIZE;
-- 
2.24.1