Remove unused metadata for non-existing sync_thread_mutex

storage/innobase/handler/ha_innodb.cc

@@ -626,9 +626,6 @@ static PSI_mutex_info all_innodb_mutexes[] = {
 	PSI_KEY(srv_innodb_monitor_mutex),
 	PSI_KEY(srv_misc_tmpfile_mutex),
 	PSI_KEY(srv_monitor_file_mutex),
-#  ifdef UNIV_DEBUG
-	PSI_KEY(sync_thread_mutex),
-#  endif /* UNIV_DEBUG */
 	PSI_KEY(buf_dblwr_mutex),
 	PSI_KEY(trx_undo_mutex),
 	PSI_KEY(trx_pool_mutex),

storage/innobase/include/sync0sync.h

@@ -94,9 +94,6 @@ extern mysql_pfs_key_t	rw_lock_mutex_key;
 extern mysql_pfs_key_t	srv_innodb_monitor_mutex_key;
 extern mysql_pfs_key_t	srv_misc_tmpfile_mutex_key;
 extern mysql_pfs_key_t	srv_monitor_file_mutex_key;
-# ifdef UNIV_DEBUG
-extern mysql_pfs_key_t	sync_thread_mutex_key;
-# endif /* UNIV_DEBUG */
 extern mysql_pfs_key_t	buf_dblwr_mutex_key;
 extern mysql_pfs_key_t	trx_undo_mutex_key;
 extern mysql_pfs_key_t	trx_mutex_key;

storage/innobase/include/sync0types.h

@@ -338,7 +338,6 @@ enum latch_id_t {
 	LATCH_ID_SRV_INNODB_MONITOR,
 	LATCH_ID_SRV_MISC_TMPFILE,
 	LATCH_ID_SRV_MONITOR_FILE,
-	LATCH_ID_SYNC_THREAD,
 	LATCH_ID_BUF_DBLWR,
 	LATCH_ID_TRX_UNDO,
 	LATCH_ID_TRX_POOL,

storage/innobase/sync/sync0debug.cc

@@ -1401,11 +1401,6 @@ sync_latch_meta_init()
 	LATCH_ADD_MUTEX(SRV_MONITOR_FILE, SYNC_NO_ORDER_CHECK,
 			srv_monitor_file_mutex_key);
 
-#ifdef UNIV_DEBUG
-	LATCH_ADD_MUTEX(SYNC_THREAD, SYNC_NO_ORDER_CHECK,
-			sync_thread_mutex_key);
-#endif /* UNIV_DEBUG */
-
 	LATCH_ADD_MUTEX(BUF_DBLWR, SYNC_DOUBLEWRITE, buf_dblwr_mutex_key);
 
 	LATCH_ADD_MUTEX(TRX_UNDO, SYNC_TRX_UNDO, trx_undo_mutex_key);

storage/innobase/sync/sync0sync.cc

@@ -69,7 +69,6 @@ mysql_pfs_key_t	redo_rseg_mutex_key;
 mysql_pfs_key_t	noredo_rseg_mutex_key;
 mysql_pfs_key_t page_zip_stat_per_index_mutex_key;
 # ifdef UNIV_DEBUG
-mysql_pfs_key_t	sync_thread_mutex_key;
 mysql_pfs_key_t	rw_lock_debug_mutex_key;
 # endif /* UNIV_DEBUG */
 mysql_pfs_key_t rtr_active_mutex_key;