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

/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
 *
 * wrapper/spinlock.h
 *
 * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _LTTNG_WRAPPER_SPINLOCK_H
#define _LTTNG_WRAPPER_SPINLOCK_H

#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
9f36eaed MJ	1	/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
9f36eaed MJ	2	*
886d51a3	3	* wrapper/spinlock.h
a181050f	4	*
886d51a3	5	* Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
a181050f MD	6	*/
a181050f MD	7
9f36eaed MJ	8	#ifndef _LTTNG_WRAPPER_SPINLOCK_H
	9	#define _LTTNG_WRAPPER_SPINLOCK_H
	10
a181050f MD	11	#include <linux/version.h>
	12
	13	#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,33))
	14
8e1be6f1 MD	15	#include <linux/string.h>
	16
	17	#define raw_spin_lock_init(lock) \
	18	do { \
	19	raw_spinlock_t __lock = __RAW_SPIN_LOCK_UNLOCKED; \
	20	memcpy(lock, &__lock, sizeof(lock)); \
a181050f MD	21	} while (0)
a181050f MD	22
dce93417	23	#define raw_spin_is_locked(lock) __raw_spin_is_locked(lock)
a181050f	24
3a523f5b MD	25	#define wrapper_desc_spin_lock(lock) spin_lock(lock)
	26	#define wrapper_desc_spin_unlock(lock) spin_unlock(lock)
	27
	28	#else
	29
	30	#define wrapper_desc_spin_lock(lock) raw_spin_lock(lock)
	31	#define wrapper_desc_spin_unlock(lock) raw_spin_unlock(lock)
a181050f MD	32
a181050f MD	33	#endif
a90917c3	34	#endif /* _LTTNG_WRAPPER_SPINLOCK_H */