migration: expose xbzrle cache miss rate

expose xbzrle cache miss rate

Signed-off-by: ChenLiang <chenliang88@huawei.com>
Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/migration/migration.h b/include/migration/migration.h
index 8d88c7dbd2..3cb5ba80c3 100644
--- a/include/migration/migration.h
+++ b/include/migration/migration.h
@@ -124,6 +124,7 @@ uint64_t xbzrle_mig_bytes_transferred(void);
 uint64_t xbzrle_mig_pages_transferred(void);
 uint64_t xbzrle_mig_pages_overflow(void);
 uint64_t xbzrle_mig_pages_cache_miss(void);
+double xbzrle_mig_cache_miss_rate(void);
 
 void ram_handle_compressed(void *host, uint8_t ch, uint64_t size);