Root/kernel/rcutiny_plugin.h

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 */
33void 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 */
40

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