|  | /* | 
|  | * Read-Copy Update mechanism for mutual exclusion (tree-based version) | 
|  | * Internal non-public definitions that provide either classic | 
|  | * or preemptable semantics. | 
|  | * | 
|  | * This program is free software; you can redistribute it and/or modify | 
|  | * it under the terms of the GNU General Public License as published by | 
|  | * the Free Software Foundation; either version 2 of the License, or | 
|  | * (at your option) any later version. | 
|  | * | 
|  | * This program is distributed in the hope that it will be useful, | 
|  | * but WITHOUT ANY WARRANTY; without even the implied warranty of | 
|  | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
|  | * GNU General Public License for more details. | 
|  | * | 
|  | * You should have received a copy of the GNU General Public License | 
|  | * along with this program; if not, write to the Free Software | 
|  | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | 
|  | * | 
|  | * Copyright IBM Corporation, 2009 | 
|  | * | 
|  | * Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 
|  | */ | 
|  |  | 
|  | #ifdef CONFIG_DEBUG_LOCK_ALLOC | 
|  |  | 
|  | #include <linux/kernel_stat.h> | 
|  |  | 
|  | /* | 
|  | * During boot, we forgive RCU lockdep issues.  After this function is | 
|  | * invoked, we start taking RCU lockdep issues seriously. | 
|  | */ | 
|  | void rcu_scheduler_starting(void) | 
|  | { | 
|  | WARN_ON(nr_context_switches() > 0); | 
|  | rcu_scheduler_active = 1; | 
|  | } | 
|  |  | 
|  | #endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ |