Undo changes to XtraDB.

storage/xtradb/handler/ha_innodb.cc

@@ -348,22 +348,6 @@ static TYPELIB innodb_empty_free_list_algorithm_typelib = {
 	NULL
 };
 
-/** Possible values of the parameter innodb_lock_schedule_algorithm */
-static const char* innodb_lock_schedule_algorithm_names[] = {
-	"fcfs",
-	"vats",
-	NullS
-};
-
-/** Used to define an enumerate type of the system variable
-innodb_lock_schedule_algorithm. */
-static TYPELIB innodb_lock_schedule_algorithm_typelib = {
-	array_elements(innodb_lock_schedule_algorithm_names) - 1,
-	"innodb_lock_schedule_algorithm_typelib",
-	innodb_lock_schedule_algorithm_names,
-	NULL
-};
-
 /* The following counter is used to convey information to InnoDB
 about server activity: in case of normal DML ops it is not
 sensible to call srv_active_wake_master_thread after each
@@ -20406,18 +20390,6 @@ static MYSQL_SYSVAR_ENUM(empty_free_list_algorithm,
   innodb_srv_empty_free_list_algorithm_validate, NULL, SRV_EMPTY_FREE_LIST_BACKOFF,
   &innodb_empty_free_list_algorithm_typelib);
 
-static MYSQL_SYSVAR_ENUM(lock_schedule_algorithm, innodb_lock_schedule_algorithm,
-  PLUGIN_VAR_RQCMDARG,
-  "The algorithm Innodb uses for deciding which locks to grant next when"
-  " a lock is released. Possible values are"
-  " FCFS"
-  " grant the locks in First-Come-First-Served order;"
-  " VATS"
-  " use the Variance-Aware-Transaction-Scheduling algorithm, which"
-  " uses an Eldest-Transaction-First heuristic.",
-  NULL, NULL, INNODB_LOCK_SCHEDULE_ALGORITHM_FCFS,
-  &innodb_lock_schedule_algorithm_typelib);
-
 static MYSQL_SYSVAR_LONG(buffer_pool_instances, innobase_buffer_pool_instances,
   PLUGIN_VAR_RQCMDARG | PLUGIN_VAR_READONLY,
   "Number of buffer pool instances, set to higher value on high-end machines to increase scalability",
@@ -21311,7 +21283,6 @@ static struct st_mysql_sys_var* innobase_system_variables[]= {
   MYSQL_SYSVAR(ft_sort_pll_degree),
   MYSQL_SYSVAR(large_prefix),
   MYSQL_SYSVAR(force_load_corrupted),
-  MYSQL_SYSVAR(lock_schedule_algorithm),
   MYSQL_SYSVAR(locks_unsafe_for_binlog),
   MYSQL_SYSVAR(lock_wait_timeout),
 #ifdef UNIV_LOG_ARCHIVE

storage/xtradb/include/lock0lock.h

@@ -47,17 +47,6 @@ extern ibool	lock_print_waits;
 
 extern ulint	srv_n_lock_deadlock_count;
 
-/** Alternatives for innodb_lock_schedule_algorithm, which can be changed by
-    setting innodb_lock_schedule_algorithm. */
-enum innodb_lock_schedule_algorithm_t {
-    /*!< First Come First Served */
-    INNODB_LOCK_SCHEDULE_ALGORITHM_FCFS,
-    /*!< Variance-Aware-Transaction-Scheduling */
-    INNODB_LOCK_SCHEDULE_ALGORITHM_VATS
-};
-
-extern ulong innodb_lock_schedule_algorithm;
-
 /*********************************************************************//**
 Gets the size of a lock struct.
 @return	size in bytes */

storage/xtradb/include/trx0trx.h

@@ -876,8 +876,6 @@ struct trx_t{
 
 	time_t		start_time;	/*!< time the trx state last time became
 					TRX_STATE_ACTIVE */
-	clock_t 	start_time_micro; /*!< start time of the transaction
-                    in microseconds. */
 	trx_id_t	id;		/*!< transaction id */
 	XID		xid;		/*!< X/Open XA transaction
 					identification to identify a

storage/xtradb/trx/trx0trx.cc

@@ -1117,8 +1117,6 @@ trx_start_low(
 
 	trx->start_time = ut_time();
 
-	trx->start_time_micro = clock();
-
 	MONITOR_INC(MONITOR_TRX_ACTIVE);
 }