[lttng-modules.git] / wrapper / spinlock.h

#ifndef _LTTNG_WRAPPER_SPINLOCK_H
#define _LTTNG_WRAPPER_SPINLOCK_H

/*
 * wrapper/spinlock.h
 *
 * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; only
 * version 2.1 of the License.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <linux/version.h>

#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33))

#include <linux/string.h>

#define raw_spin_lock_init(lock)					\
	do {								\
		raw_spinlock_t __lock = __RAW_SPIN_LOCK_UNLOCKED;	\
		memcpy(lock, &__lock, sizeof(lock));			\
	} while (0)

#define raw_spin_is_locked(lock)	__raw_spin_is_locked(lock)

#define wrapper_desc_spin_lock(lock)	spin_lock(lock)
#define wrapper_desc_spin_unlock(lock)	spin_unlock(lock)

#else

#define wrapper_desc_spin_lock(lock)	raw_spin_lock(lock)
#define wrapper_desc_spin_unlock(lock)	raw_spin_unlock(lock)

#endif
#endif /* _LTTNG_WRAPPER_SPINLOCK_H */
Commit	Line	Data
a90917c3 MD	1	#ifndef _LTTNG_WRAPPER_SPINLOCK_H
a90917c3 MD	2	#define _LTTNG_WRAPPER_SPINLOCK_H
a181050f MD	3
a181050f MD	4	/*
886d51a3	5	* wrapper/spinlock.h
a181050f	6	*
886d51a3 MD	7	* Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*
	9	* This library is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU Lesser General Public
	11	* License as published by the Free Software Foundation; only
	12	* version 2.1 of the License.
	13	*
	14	* This library is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* Lesser General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public
	20	* License along with this library; if not, write to the Free Software
	21	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
a181050f MD	22	*/
	23
	24	#include <linux/version.h>
	25
	26	#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33))
	27
8e1be6f1 MD	28	#include <linux/string.h>
	29
	30	#define raw_spin_lock_init(lock) \
	31	do { \
	32	raw_spinlock_t __lock = __RAW_SPIN_LOCK_UNLOCKED; \
	33	memcpy(lock, &__lock, sizeof(lock)); \
a181050f MD	34	} while (0)
a181050f MD	35
dce93417	36	#define raw_spin_is_locked(lock) __raw_spin_is_locked(lock)
a181050f	37
3a523f5b MD	38	#define wrapper_desc_spin_lock(lock) spin_lock(lock)
	39	#define wrapper_desc_spin_unlock(lock) spin_unlock(lock)
	40
	41	#else
	42
	43	#define wrapper_desc_spin_lock(lock) raw_spin_lock(lock)
	44	#define wrapper_desc_spin_unlock(lock) raw_spin_unlock(lock)
a181050f MD	45
a181050f MD	46	#endif
a90917c3	47	#endif /* _LTTNG_WRAPPER_SPINLOCK_H */