[linux-2.6-block.git] / kernel / rcutiny_plugin.h

/*
 * 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 */
Commit	Line	Data
bbad9379 PM	1	/*
	2	* Read-Copy Update mechanism for mutual exclusion (tree-based version)
	3	* Internal non-public definitions that provide either classic
	4	* or preemptable semantics.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	19	*
	20	* Copyright IBM Corporation, 2009
	21	*
	22	* Author: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
	23	*/
	24
	25	#ifdef CONFIG_DEBUG_LOCK_ALLOC
	26
	27	#include <linux/kernel_stat.h>
	28
	29	/*
	30	* During boot, we forgive RCU lockdep issues. After this function is
	31	* invoked, we start taking RCU lockdep issues seriously.
	32	*/
	33	void rcu_scheduler_starting(void)
	34	{
	35	WARN_ON(nr_context_switches() > 0);
	36	rcu_scheduler_active = 1;
	37	}
	38
	39	#endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */