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

/* SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1)
 *
 * wrapper/atomic.h
 *
 * wrapper around linux/atomic.h.
 *
 * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 */

#ifndef _LTTNG_WRAPPER_ATOMIC_H
#define _LTTNG_WRAPPER_ATOMIC_H

#include <linux/version.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
#include <linux/atomic.h>
#else
#include <asm/atomic.h>
#endif

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0))
static inline void lttng_smp_mb__before_atomic(void)
{
	smp_mb__before_atomic();
}

static inline void lttng_smp_mb__after_atomic(void)
{
	smp_mb__after_atomic();
}
#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */
static inline void lttng_smp_mb__before_atomic(void)
{
	smp_mb__before_atomic_inc();
}

static inline void lttng_smp_mb__after_atomic(void)
{
	smp_mb__after_atomic_inc();
}
#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */

#endif /* _LTTNG_WRAPPER_ATOMIC_H */
Commit	Line	Data
	1	/* SPDX-License-Identifier: (GPL-2.0 OR LGPL-2.1)
	2	*
	3	* wrapper/atomic.h
	4	*
	5	* wrapper around linux/atomic.h.
	6	*
	7	* Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*/
	9
	10	#ifndef _LTTNG_WRAPPER_ATOMIC_H
	11	#define _LTTNG_WRAPPER_ATOMIC_H
	12
	13	#include <linux/version.h>
	14	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,37))
	15	#include <linux/atomic.h>
	16	#else
	17	#include <asm/atomic.h>
	18	#endif
	19
	20	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0))
	21	static inline void lttng_smp_mb__before_atomic(void)
	22	{
	23	smp_mb__before_atomic();
	24	}
	25
	26	static inline void lttng_smp_mb__after_atomic(void)
	27	{
	28	smp_mb__after_atomic();
	29	}
	30	#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */
	31	static inline void lttng_smp_mb__before_atomic(void)
	32	{
	33	smp_mb__before_atomic_inc();
	34	}
	35
	36	static inline void lttng_smp_mb__after_atomic(void)
	37	{
	38	smp_mb__after_atomic_inc();
	39	}
	40	#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,16,0)) */
	41
	42	#endif /* _LTTNG_WRAPPER_ATOMIC_H */