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

["Dr. David Alan Gilbert" <dgilbert@redhat.com>]

* Peter Xu (peterx@redhat.com) wrote:
> 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>

Reviewed-by: Dr. David Alan Gilbert <dgilbert@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
> 
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK